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] => 3498148 [patent_doc_number] => 05537085 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-07-16 [patent_title] => 'Interdigital ceramic filter with transmission zero' [patent_app_type] => 1 [patent_app_number] => 8/414872 [patent_app_country] => US [patent_app_date] => 1995-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 17 [patent_no_of_words] => 5444 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 182 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/537/05537085.pdf [firstpage_image] =>[orig_patent_app_number] => 414872 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/414872
Interdigital ceramic filter with transmission zero Mar 30, 1995 Issued
Array ( [id] => 3629402 [patent_doc_number] => 05602518 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-02-11 [patent_title] => 'Ceramic filter with channeled features to control magnetic coupling' [patent_app_type] => 1 [patent_app_number] => 8/410024 [patent_app_country] => US [patent_app_date] => 1995-03-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 15 [patent_no_of_words] => 3259 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/602/05602518.pdf [firstpage_image] =>[orig_patent_app_number] => 410024 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/410024
Ceramic filter with channeled features to control magnetic coupling Mar 23, 1995 Issued
Array ( [id] => 3526953 [patent_doc_number] => 05489882 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-02-06 [patent_title] => 'Balanced-type dielectric filter and high frequency circuit using balanced-type dielectric filter' [patent_app_type] => 1 [patent_app_number] => 8/403596 [patent_app_country] => US [patent_app_date] => 1995-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 17 [patent_no_of_words] => 6619 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 218 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/489/05489882.pdf [firstpage_image] =>[orig_patent_app_number] => 403596 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/403596
Balanced-type dielectric filter and high frequency circuit using balanced-type dielectric filter Mar 13, 1995 Issued
Array ( [id] => 3618236 [patent_doc_number] => 05565824 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-10-15 [patent_title] => 'Ladder filter having reduced size' [patent_app_type] => 1 [patent_app_number] => 8/394285 [patent_app_country] => US [patent_app_date] => 1995-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 1286 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/565/05565824.pdf [firstpage_image] =>[orig_patent_app_number] => 394285 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/394285
Ladder filter having reduced size Feb 23, 1995 Issued
Array ( [id] => 3885483 [patent_doc_number] => 05748058 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-05-05 [patent_title] => 'Cross coupled bandpass filter' [patent_app_type] => 1 [patent_app_number] => 8/383264 [patent_app_country] => US [patent_app_date] => 1995-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 17 [patent_no_of_words] => 4108 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/748/05748058.pdf [firstpage_image] =>[orig_patent_app_number] => 383264 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/383264
Cross coupled bandpass filter Feb 2, 1995 Issued
Array ( [id] => 3664901 [patent_doc_number] => 05592135 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-01-07 [patent_title] => 'Surface acoustic wave filter with different filter portions satisfying complex conjugate relationship of impedances' [patent_app_type] => 1 [patent_app_number] => 8/373033 [patent_app_country] => US [patent_app_date] => 1995-01-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 16 [patent_no_of_words] => 6825 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/592/05592135.pdf [firstpage_image] =>[orig_patent_app_number] => 373033 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/373033
Surface acoustic wave filter with different filter portions satisfying complex conjugate relationship of impedances Jan 16, 1995 Issued
Array ( [id] => 3555084 [patent_doc_number] => 05548256 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-08-20 [patent_title] => 'Saw filter having electrodes for relaxation of electric field concentration' [patent_app_type] => 1 [patent_app_number] => 8/372453 [patent_app_country] => US [patent_app_date] => 1995-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 4486 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 110 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/548/05548256.pdf [firstpage_image] =>[orig_patent_app_number] => 372453 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/372453
Saw filter having electrodes for relaxation of electric field concentration Jan 12, 1995 Issued
Array ( [id] => 3613958 [patent_doc_number] => 05589806 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-12-31 [patent_title] => 'Surface acoustic wave filter having parallel/serial resonator connection based on transmitting and receiving frequencies' [patent_app_type] => 1 [patent_app_number] => 8/368981 [patent_app_country] => US [patent_app_date] => 1995-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4494 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/589/05589806.pdf [firstpage_image] =>[orig_patent_app_number] => 368981 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/368981
Surface acoustic wave filter having parallel/serial resonator connection based on transmitting and receiving frequencies Jan 4, 1995 Issued
Array ( [id] => 3531043 [patent_doc_number] => 05528199 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-06-18 [patent_title] => 'Closed-loop frequency control of an oscillator circuit' [patent_app_type] => 1 [patent_app_number] => 8/367401 [patent_app_country] => US [patent_app_date] => 1994-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 6149 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/528/05528199.pdf [firstpage_image] =>[orig_patent_app_number] => 367401 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/367401
Closed-loop frequency control of an oscillator circuit Dec 29, 1994 Issued
Array ( [id] => 3593695 [patent_doc_number] => 05550505 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-08-27 [patent_title] => 'Frequency shift keying (FSK) demodulator for use in low signal-to-noise ratio environments' [patent_app_type] => 1 [patent_app_number] => 8/366932 [patent_app_country] => US [patent_app_date] => 1994-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 1967 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/550/05550505.pdf [firstpage_image] =>[orig_patent_app_number] => 366932 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/366932
Frequency shift keying (FSK) demodulator for use in low signal-to-noise ratio environments Dec 29, 1994 Issued
08/366121 ISOLATING AN OSCILLATOR FROM EXTERNAL MECHANICAL AND THERMAL EFFECTS Dec 28, 1994 Abandoned
Array ( [id] => 3663239 [patent_doc_number] => 05659271 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-08-19 [patent_title] => 'Voltage controlled oscillator circuit for reducing the effects of vibration on quartz crystal oscillator' [patent_app_type] => 1 [patent_app_number] => 8/363943 [patent_app_country] => US [patent_app_date] => 1994-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2962 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/659/05659271.pdf [firstpage_image] =>[orig_patent_app_number] => 363943 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/363943
Voltage controlled oscillator circuit for reducing the effects of vibration on quartz crystal oscillator Dec 26, 1994 Issued
Array ( [id] => 3655700 [patent_doc_number] => 05606290 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-02-25 [patent_title] => 'Phase locked loop circuit having lock holder' [patent_app_type] => 1 [patent_app_number] => 8/362314 [patent_app_country] => US [patent_app_date] => 1994-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3809 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/606/05606290.pdf [firstpage_image] =>[orig_patent_app_number] => 362314 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/362314
Phase locked loop circuit having lock holder Dec 21, 1994 Issued
Array ( [id] => 3618222 [patent_doc_number] => 05565823 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-10-15 [patent_title] => 'Voltage controlled attenuator using PN diodes' [patent_app_type] => 1 [patent_app_number] => 8/360892 [patent_app_country] => US [patent_app_date] => 1994-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 3100 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/565/05565823.pdf [firstpage_image] =>[orig_patent_app_number] => 360892 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/360892
Voltage controlled attenuator using PN diodes Dec 20, 1994 Issued
08/361317 RESONATOR WITH SPIRAL-SHAPED PATTERN ELECTRODES Dec 20, 1994 Abandoned
Array ( [id] => 3593877 [patent_doc_number] => 05550517 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-08-27 [patent_title] => 'Oscillation circuit having hysteresis inverter coupled to a delay circuit' [patent_app_type] => 1 [patent_app_number] => 8/358470 [patent_app_country] => US [patent_app_date] => 1994-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 17 [patent_no_of_words] => 6380 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 286 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/550/05550517.pdf [firstpage_image] =>[orig_patent_app_number] => 358470 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/358470
Oscillation circuit having hysteresis inverter coupled to a delay circuit Dec 18, 1994 Issued
Array ( [id] => 3729843 [patent_doc_number] => 05673010 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-09-30 [patent_title] => 'Power distributor system and power distributor for microwave signals having recurring hierarchical structure of distributor elements and coupler elements' [patent_app_type] => 1 [patent_app_number] => 8/358361 [patent_app_country] => US [patent_app_date] => 1994-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 18 [patent_no_of_words] => 3407 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 14 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/673/05673010.pdf [firstpage_image] =>[orig_patent_app_number] => 358361 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/358361
Power distributor system and power distributor for microwave signals having recurring hierarchical structure of distributor elements and coupler elements Dec 18, 1994 Issued
Array ( [id] => 3893463 [patent_doc_number] => 05714910 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-02-03 [patent_title] => 'Methods and apparatus for digital frequency generation in atomic frequency standards' [patent_app_type] => 1 [patent_app_number] => 8/358832 [patent_app_country] => US [patent_app_date] => 1994-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 33 [patent_no_of_words] => 12728 [patent_no_of_claims] => 59 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/714/05714910.pdf [firstpage_image] =>[orig_patent_app_number] => 358832 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/358832
Methods and apparatus for digital frequency generation in atomic frequency standards Dec 18, 1994 Issued
Array ( [id] => 3577487 [patent_doc_number] => 05539363 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-07-23 [patent_title] => 'Dielectric resonator apparatus having adjustable external structure and method of adjusting same' [patent_app_type] => 1 [patent_app_number] => 8/357945 [patent_app_country] => US [patent_app_date] => 1994-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 13 [patent_no_of_words] => 5059 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/539/05539363.pdf [firstpage_image] =>[orig_patent_app_number] => 357945 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/357945
Dielectric resonator apparatus having adjustable external structure and method of adjusting same Dec 14, 1994 Issued
08/357205 HIGH FREQUENCY FILTER Dec 12, 1994 Abandoned
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