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] => 7805608 [patent_doc_number] => 20120056560 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-03-08 [patent_title] => 'DC POWER SOURCE UNIT AND LED LAMP SYSTEM' [patent_app_type] => utility [patent_app_number] => 13/218767 [patent_app_country] => US [patent_app_date] => 2011-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3315 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0056/20120056560.pdf [firstpage_image] =>[orig_patent_app_number] => 13218767 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/218767
DC power source unit and LED lamp system Aug 25, 2011 Issued
Array ( [id] => 8134713 [patent_doc_number] => 20120091908 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-04-19 [patent_title] => 'DRIVING CIRCUIT AND DRIVING METHOD OF BACKLIGHT MODULE OF DISPLAY APPARATUS' [patent_app_type] => utility [patent_app_number] => 13/219602 [patent_app_country] => US [patent_app_date] => 2011-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2975 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0091/20120091908.pdf [firstpage_image] =>[orig_patent_app_number] => 13219602 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/219602
Driving circuit and driving method of backlight module of display apparatus Aug 25, 2011 Issued
Array ( [id] => 9553021 [patent_doc_number] => 08760074 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-06-24 [patent_title] => 'Tunable white luminaire' [patent_app_type] => utility [patent_app_number] => 13/218148 [patent_app_country] => US [patent_app_date] => 2011-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 8090 [patent_no_of_claims] => 38 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13218148 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/218148
Tunable white luminaire Aug 24, 2011 Issued
Array ( [id] => 8681344 [patent_doc_number] => 20130049628 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2013-02-28 [patent_title] => 'Current-Switching LED Driver Using DAC to Ramp Bypass Currents to Accelerate Switching Speed and Reduce Ripple' [patent_app_type] => utility [patent_app_number] => 13/218426 [patent_app_country] => US [patent_app_date] => 2011-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 6680 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13218426 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/218426
Current-switching LED driver using DAC to ramp bypass currents to accelerate switching speed and reduce ripple Aug 24, 2011 Issued
Array ( [id] => 8037757 [patent_doc_number] => 20120068617 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-03-22 [patent_title] => 'LED DRIVE CIRCUIT, LED ILLUMINATION COMPONENT, LED ILLUMINATION DEVICE, AND LED ILLUMINATION SYSTEM' [patent_app_type] => utility [patent_app_number] => 13/217350 [patent_app_country] => US [patent_app_date] => 2011-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 8588 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0068/20120068617.pdf [firstpage_image] =>[orig_patent_app_number] => 13217350 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/217350
LED drive circuit, LED illumination component, LED illumination device, and LED illumination system Aug 24, 2011 Issued
Array ( [id] => 8520175 [patent_doc_number] => 20120319583 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-12-20 [patent_title] => 'LED Ballast Mount' [patent_app_type] => utility [patent_app_number] => 13/217614 [patent_app_country] => US [patent_app_date] => 2011-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1471 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13217614 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/217614
LED ballast mount Aug 24, 2011 Issued
Array ( [id] => 9345742 [patent_doc_number] => 08664893 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-03-04 [patent_title] => 'Feedback control circuit and LED driving circuit' [patent_app_type] => utility [patent_app_number] => 13/218405 [patent_app_country] => US [patent_app_date] => 2011-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 4884 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 183 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13218405 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/218405
Feedback control circuit and LED driving circuit Aug 24, 2011 Issued
Array ( [id] => 7815506 [patent_doc_number] => 20120062126 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-03-15 [patent_title] => 'ILLUMINATION DEVICE AND METHOD CONTROLLING THE SAME' [patent_app_type] => utility [patent_app_number] => 13/217207 [patent_app_country] => US [patent_app_date] => 2011-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3860 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0062/20120062126.pdf [firstpage_image] =>[orig_patent_app_number] => 13217207 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/217207
Illumination device and method controlling the same Aug 23, 2011 Issued
Array ( [id] => 9350814 [patent_doc_number] => 08669709 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-03-11 [patent_title] => 'Solid state lighting driver with THDi bypass circuit' [patent_app_type] => utility [patent_app_number] => 13/216763 [patent_app_country] => US [patent_app_date] => 2011-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 4353 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13216763 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/216763
Solid state lighting driver with THDi bypass circuit Aug 23, 2011 Issued
Array ( [id] => 9763184 [patent_doc_number] => 08847515 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-09-30 [patent_title] => 'Multi-mode dimmer interfacing including attach state control' [patent_app_type] => utility [patent_app_number] => 13/217174 [patent_app_country] => US [patent_app_date] => 2011-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 17 [patent_no_of_words] => 12647 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13217174 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/217174
Multi-mode dimmer interfacing including attach state control Aug 23, 2011 Issued
Array ( [id] => 9274117 [patent_doc_number] => 08638051 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-01-28 [patent_title] => 'DC-DC converter and driving device of light source for display device using the same' [patent_app_type] => utility [patent_app_number] => 13/216419 [patent_app_country] => US [patent_app_date] => 2011-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5826 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 32 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13216419 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/216419
DC-DC converter and driving device of light source for display device using the same Aug 23, 2011 Issued
Array ( [id] => 7788185 [patent_doc_number] => 20120049741 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-03-01 [patent_title] => 'CURRENT BALANCE SCHEME FOR DRIVING LED STRINGS AND THE METHOD THEREOF' [patent_app_type] => utility [patent_app_number] => 13/216205 [patent_app_country] => US [patent_app_date] => 2011-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 2915 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0049/20120049741.pdf [firstpage_image] =>[orig_patent_app_number] => 13216205 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/216205
CURRENT BALANCE SCHEME FOR DRIVING LED STRINGS AND THE METHOD THEREOF Aug 22, 2011 Abandoned
Array ( [id] => 7782340 [patent_doc_number] => 20120043896 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-02-23 [patent_title] => 'AC DRIVEN LIGHT EMITTING DEVICE' [patent_app_type] => utility [patent_app_number] => 13/215619 [patent_app_country] => US [patent_app_date] => 2011-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 3482 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0043/20120043896.pdf [firstpage_image] =>[orig_patent_app_number] => 13215619 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/215619
AC driven light emitting device Aug 22, 2011 Issued
Array ( [id] => 9402415 [patent_doc_number] => 08692473 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-04-08 [patent_title] => 'Portable lighting device' [patent_app_type] => utility [patent_app_number] => 13/216092 [patent_app_country] => US [patent_app_date] => 2011-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 16 [patent_no_of_words] => 9798 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13216092 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/216092
Portable lighting device Aug 22, 2011 Issued
Array ( [id] => 9027212 [patent_doc_number] => 08536797 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2013-09-17 [patent_title] => 'Semiconductor light source apparatus and semiconductor light source control method' [patent_app_type] => utility [patent_app_number] => 13/214371 [patent_app_country] => US [patent_app_date] => 2011-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3087 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 206 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13214371 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/214371
Semiconductor light source apparatus and semiconductor light source control method Aug 21, 2011 Issued
Array ( [id] => 8439941 [patent_doc_number] => 20120256554 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-10-11 [patent_title] => 'LIGHT SOURCE DRIVER' [patent_app_type] => utility [patent_app_number] => 13/213267 [patent_app_country] => US [patent_app_date] => 2011-08-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4982 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13213267 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/213267
Light source driver Aug 18, 2011 Issued
Array ( [id] => 8203203 [patent_doc_number] => 08188677 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-05-29 [patent_title] => 'Multi-function duty cycle modifier' [patent_app_type] => utility [patent_app_number] => 13/206212 [patent_app_country] => US [patent_app_date] => 2011-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 14 [patent_no_of_words] => 7457 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 46 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/188/08188677.pdf [firstpage_image] =>[orig_patent_app_number] => 13206212 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/206212
Multi-function duty cycle modifier Aug 8, 2011 Issued
Array ( [id] => 9167392 [patent_doc_number] => 08593075 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2013-11-26 [patent_title] => 'Constant current controller with selectable gain' [patent_app_type] => utility [patent_app_number] => 13/174404 [patent_app_country] => US [patent_app_date] => 2011-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 6735 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13174404 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/174404
Constant current controller with selectable gain Jun 29, 2011 Issued
Array ( [id] => 6041072 [patent_doc_number] => 20110203149 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-08-25 [patent_title] => 'APPARATUS AND METHODS FOR THE THERMAL REGULATION OF LIGHT EMITTING DIODES IN SIGNAGE' [patent_app_type] => utility [patent_app_number] => 13/100065 [patent_app_country] => US [patent_app_date] => 2011-05-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4930 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0203/20110203149.pdf [firstpage_image] =>[orig_patent_app_number] => 13100065 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/100065
Apparatus and methods for the thermal regulation of light emitting diodes in signage May 2, 2011 Issued
Array ( [id] => 7724752 [patent_doc_number] => 08098024 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2012-01-17 [patent_title] => 'Apparatus and method for discretionary adjustment of lumen output of light sources having lamp lumen depreciation characteristic compensation' [patent_app_type] => utility [patent_app_number] => 13/092674 [patent_app_country] => US [patent_app_date] => 2011-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 18 [patent_no_of_words] => 24369 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/098/08098024.pdf [firstpage_image] =>[orig_patent_app_number] => 13092674 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/092674
Apparatus and method for discretionary adjustment of lumen output of light sources having lamp lumen depreciation characteristic compensation Apr 21, 2011 Issued
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