Search

David Hung Vu

Examiner (ID: 356, Phone: (571)272-1831 , Office: P/2844 )

Most Active Art Unit
2821
Art Unit(s)
2817, 2828, 2844, 2502, 2821
Total Applications
1734
Issued Applications
1511
Pending Applications
64
Abandoned Applications
163

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 3795507 [patent_doc_number] => 05841237 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-11-24 [patent_title] => 'Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources' [patent_app_type] => 1 [patent_app_number] => 8/892492 [patent_app_country] => US [patent_app_date] => 1997-07-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4526 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 169 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/841/05841237.pdf [firstpage_image] =>[orig_patent_app_number] => 892492 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/892492
Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources Jul 13, 1997 Issued
Array ( [id] => 3821811 [patent_doc_number] => 05789866 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-08-04 [patent_title] => 'Electronic ballast with reversely wound filament winding' [patent_app_type] => 1 [patent_app_number] => 8/893741 [patent_app_country] => US [patent_app_date] => 1997-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 6 [patent_no_of_words] => 2500 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/789/05789866.pdf [firstpage_image] =>[orig_patent_app_number] => 893741 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/893741
Electronic ballast with reversely wound filament winding Jul 10, 1997 Issued
Array ( [id] => 3821883 [patent_doc_number] => 05789871 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-08-04 [patent_title] => 'Series-capacitor electronic ballast' [patent_app_type] => 1 [patent_app_number] => 8/890460 [patent_app_country] => US [patent_app_date] => 1997-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 20 [patent_no_of_words] => 4236 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 261 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/789/05789871.pdf [firstpage_image] =>[orig_patent_app_number] => 890460 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/890460
Series-capacitor electronic ballast Jul 8, 1997 Issued
Array ( [id] => 4022807 [patent_doc_number] => 05907223 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-05-25 [patent_title] => 'Two-frequency electronic ballast system having an isolated PFC converter' [patent_app_type] => 1 [patent_app_number] => 8/891879 [patent_app_country] => US [patent_app_date] => 1997-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 17 [patent_no_of_words] => 5314 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 210 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/907/05907223.pdf [firstpage_image] =>[orig_patent_app_number] => 891879 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/891879
Two-frequency electronic ballast system having an isolated PFC converter Jul 8, 1997 Issued
Array ( [id] => 3941440 [patent_doc_number] => 05929568 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-07-27 [patent_title] => 'Incandescent bulb luminance matching LED circuit' [patent_app_type] => 1 [patent_app_number] => 8/890434 [patent_app_country] => US [patent_app_date] => 1997-07-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 3128 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/929/05929568.pdf [firstpage_image] =>[orig_patent_app_number] => 890434 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/890434
Incandescent bulb luminance matching LED circuit Jul 7, 1997 Issued
Array ( [id] => 4070863 [patent_doc_number] => 05866989 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-02-02 [patent_title] => 'Circuit arrangement for operating a discharge lamp' [patent_app_type] => 1 [patent_app_number] => 8/888901 [patent_app_country] => US [patent_app_date] => 1997-07-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1760 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/866/05866989.pdf [firstpage_image] =>[orig_patent_app_number] => 888901 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/888901
Circuit arrangement for operating a discharge lamp Jul 6, 1997 Issued
Array ( [id] => 3881193 [patent_doc_number] => 05825137 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-10-20 [patent_title] => 'Electronic ballasts for plural lamp fluorescent lighting without feedback circuitry' [patent_app_type] => 1 [patent_app_number] => 8/886235 [patent_app_country] => US [patent_app_date] => 1997-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 9300 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/825/05825137.pdf [firstpage_image] =>[orig_patent_app_number] => 886235 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/886235
Electronic ballasts for plural lamp fluorescent lighting without feedback circuitry Jun 30, 1997 Issued
Array ( [id] => 4204251 [patent_doc_number] => 06013986 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-01-11 [patent_title] => 'Electron-emitting device having multi-layer resistor' [patent_app_type] => 1 [patent_app_number] => 8/884702 [patent_app_country] => US [patent_app_date] => 1997-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 12 [patent_no_of_words] => 8038 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 59 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/013/06013986.pdf [firstpage_image] =>[orig_patent_app_number] => 884702 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/884702
Electron-emitting device having multi-layer resistor Jun 29, 1997 Issued
Array ( [id] => 4058272 [patent_doc_number] => 05932975 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-08-03 [patent_title] => 'Motion activated illuminating footwear and light module therefor with fading and means for deactivating in bright light' [patent_app_type] => 1 [patent_app_number] => 8/883842 [patent_app_country] => US [patent_app_date] => 1997-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 17 [patent_no_of_words] => 7114 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/932/05932975.pdf [firstpage_image] =>[orig_patent_app_number] => 883842 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/883842
Motion activated illuminating footwear and light module therefor with fading and means for deactivating in bright light Jun 26, 1997 Issued
Array ( [id] => 3776919 [patent_doc_number] => 05773935 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-06-30 [patent_title] => 'Switching device for the lighting system of motor vehicles having a main switch coupled to a decision logic device' [patent_app_type] => 1 [patent_app_number] => 8/882354 [patent_app_country] => US [patent_app_date] => 1997-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2473 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/773/05773935.pdf [firstpage_image] =>[orig_patent_app_number] => 882354 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/882354
Switching device for the lighting system of motor vehicles having a main switch coupled to a decision logic device Jun 24, 1997 Issued
Array ( [id] => 3955697 [patent_doc_number] => 05955843 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-09-21 [patent_title] => 'Relay circuit for providing power from a normal or emergency power supply to ignite and drive a high intensity discharge lamp' [patent_app_type] => 1 [patent_app_number] => 8/880311 [patent_app_country] => US [patent_app_date] => 1997-06-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 12 [patent_no_of_words] => 6079 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/955/05955843.pdf [firstpage_image] =>[orig_patent_app_number] => 880311 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/880311
Relay circuit for providing power from a normal or emergency power supply to ignite and drive a high intensity discharge lamp Jun 23, 1997 Issued
Array ( [id] => 3949044 [patent_doc_number] => 05982113 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-11-09 [patent_title] => 'Electronic ballast producing voltage having trapezoidal envelope for instant start lamps' [patent_app_type] => 1 [patent_app_number] => 8/879181 [patent_app_country] => US [patent_app_date] => 1997-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 4749 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 39 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/982/05982113.pdf [firstpage_image] =>[orig_patent_app_number] => 879181 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/879181
Electronic ballast producing voltage having trapezoidal envelope for instant start lamps Jun 19, 1997 Issued
Array ( [id] => 3927673 [patent_doc_number] => 05914572 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-06-22 [patent_title] => 'Discharge lamp driving circuit having resonant circuit defining two resonance modes' [patent_app_type] => 1 [patent_app_number] => 8/878821 [patent_app_country] => US [patent_app_date] => 1997-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 28 [patent_figures_cnt] => 51 [patent_no_of_words] => 10240 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 361 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/914/05914572.pdf [firstpage_image] =>[orig_patent_app_number] => 878821 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/878821
Discharge lamp driving circuit having resonant circuit defining two resonance modes Jun 18, 1997 Issued
Array ( [id] => 4225427 [patent_doc_number] => 06040660 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-03-21 [patent_title] => 'Device for controlling the intensity of the light emitted by a lighting element of a lighting apparatus, in particular a flashlight' [patent_app_type] => 1 [patent_app_number] => 8/876021 [patent_app_country] => US [patent_app_date] => 1997-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3390 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 199 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/040/06040660.pdf [firstpage_image] =>[orig_patent_app_number] => 876021 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/876021
Device for controlling the intensity of the light emitted by a lighting element of a lighting apparatus, in particular a flashlight Jun 12, 1997 Issued
Array ( [id] => 4190487 [patent_doc_number] => 06150771 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-11-21 [patent_title] => 'Circuit for interfacing between a conventional traffic signal conflict monitor and light emitting diodes replacing a conventional incandescent bulb in the signal' [patent_app_type] => 1 [patent_app_number] => 8/873030 [patent_app_country] => US [patent_app_date] => 1997-06-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 15 [patent_no_of_words] => 5344 [patent_no_of_claims] => 40 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/150/06150771.pdf [firstpage_image] =>[orig_patent_app_number] => 873030 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/873030
Circuit for interfacing between a conventional traffic signal conflict monitor and light emitting diodes replacing a conventional incandescent bulb in the signal Jun 10, 1997 Issued
Array ( [id] => 3881153 [patent_doc_number] => 05825134 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-10-20 [patent_title] => 'Method of holding field emission cathode in its standby state' [patent_app_type] => 1 [patent_app_number] => 8/870972 [patent_app_country] => US [patent_app_date] => 1997-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 2820 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/825/05825134.pdf [firstpage_image] =>[orig_patent_app_number] => 870972 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/870972
Method of holding field emission cathode in its standby state Jun 5, 1997 Issued
Array ( [id] => 3990799 [patent_doc_number] => 05910709 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-06-08 [patent_title] => 'Florescent lamp ballast control for zero -voltage switching operation over wide input voltage range and over voltage protection' [patent_app_type] => 1 [patent_app_number] => 8/870205 [patent_app_country] => US [patent_app_date] => 1997-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3285 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 215 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/910/05910709.pdf [firstpage_image] =>[orig_patent_app_number] => 870205 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/870205
Florescent lamp ballast control for zero -voltage switching operation over wide input voltage range and over voltage protection Jun 5, 1997 Issued
Array ( [id] => 3822030 [patent_doc_number] => 05770925 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-06-23 [patent_title] => 'Electronic ballast with inverter protection and relamping circuits' [patent_app_type] => 1 [patent_app_number] => 8/865810 [patent_app_country] => US [patent_app_date] => 1997-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 10 [patent_no_of_words] => 6488 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 327 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/770/05770925.pdf [firstpage_image] =>[orig_patent_app_number] => 865810 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/865810
Electronic ballast with inverter protection and relamping circuits May 29, 1997 Issued
Array ( [id] => 3795481 [patent_doc_number] => 05841235 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-11-24 [patent_title] => 'Source for the generation of large area pulsed ion and electron beams' [patent_app_type] => 1 [patent_app_number] => 8/866551 [patent_app_country] => US [patent_app_date] => 1997-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 3531 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 430 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/841/05841235.pdf [firstpage_image] =>[orig_patent_app_number] => 866551 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/866551
Source for the generation of large area pulsed ion and electron beams May 29, 1997 Issued
Array ( [id] => 4039692 [patent_doc_number] => 05942859 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-08-24 [patent_title] => 'Discharge lamp lighting device' [patent_app_type] => 1 [patent_app_number] => 8/865561 [patent_app_country] => US [patent_app_date] => 1997-05-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 28 [patent_figures_cnt] => 36 [patent_no_of_words] => 8343 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/942/05942859.pdf [firstpage_image] =>[orig_patent_app_number] => 865561 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/865561
Discharge lamp lighting device May 28, 1997 Issued
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