Search

Ko Hung Chan

Examiner (ID: 18286, Phone: (571)272-6816 , Office: P/3631 )

Most Active Art Unit
3631
Art Unit(s)
3637, 3505, 3632, 3631, 2899
Total Applications
2342
Issued Applications
1612
Pending Applications
102
Abandoned Applications
655

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 3775916 [patent_doc_number] => 05734297 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-03-31 [patent_title] => 'Rail-to-rail input stages with constant g.sub.m and constant common-mode output currents' [patent_app_type] => 1 [patent_app_number] => 8/625458 [patent_app_country] => US [patent_app_date] => 1996-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 14 [patent_no_of_words] => 4377 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/734/05734297.pdf [firstpage_image] =>[orig_patent_app_number] => 625458 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/625458
Rail-to-rail input stages with constant g.sub.m and constant common-mode output currents Mar 28, 1996 Issued
Array ( [id] => 3747627 [patent_doc_number] => 05786731 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-07-28 [patent_title] => 'Class AB complementary transistor output stage having large output swing and large output drive' [patent_app_type] => 1 [patent_app_number] => 8/623655 [patent_app_country] => US [patent_app_date] => 1996-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 3085 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 292 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/786/05786731.pdf [firstpage_image] =>[orig_patent_app_number] => 623655 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/623655
Class AB complementary transistor output stage having large output swing and large output drive Mar 28, 1996 Issued
Array ( [id] => 3911169 [patent_doc_number] => 05898341 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-04-27 [patent_title] => 'Differential amplification circuit and method of noise removal' [patent_app_type] => 1 [patent_app_number] => 8/622056 [patent_app_country] => US [patent_app_date] => 1996-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 7657 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 321 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/898/05898341.pdf [firstpage_image] =>[orig_patent_app_number] => 622056 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/622056
Differential amplification circuit and method of noise removal Mar 25, 1996 Issued
Array ( [id] => 3742948 [patent_doc_number] => 05699017 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-12-16 [patent_title] => 'Automatic gain control circuit' [patent_app_type] => 1 [patent_app_number] => 8/624738 [patent_app_country] => US [patent_app_date] => 1996-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 3174 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 273 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/699/05699017.pdf [firstpage_image] =>[orig_patent_app_number] => 624738 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/624738
Automatic gain control circuit Mar 25, 1996 Issued
Array ( [id] => 3782890 [patent_doc_number] => 05757235 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-05-26 [patent_title] => 'Metal semiconductor field effect transistor of source-ground type' [patent_app_type] => 1 [patent_app_number] => 8/618896 [patent_app_country] => US [patent_app_date] => 1996-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 9 [patent_no_of_words] => 4506 [patent_no_of_claims] => 5 [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/05/757/05757235.pdf [firstpage_image] =>[orig_patent_app_number] => 618896 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/618896
Metal semiconductor field effect transistor of source-ground type Mar 19, 1996 Issued
Array ( [id] => 3728657 [patent_doc_number] => 05682120 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-10-28 [patent_title] => 'Differential amplifier circuit using lateral-type bipolar transistors with back gates' [patent_app_type] => 1 [patent_app_number] => 8/618746 [patent_app_country] => US [patent_app_date] => 1996-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 3958 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 284 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/682/05682120.pdf [firstpage_image] =>[orig_patent_app_number] => 618746 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/618746
Differential amplifier circuit using lateral-type bipolar transistors with back gates Mar 19, 1996 Issued
Array ( [id] => 3887289 [patent_doc_number] => 05798673 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-08-25 [patent_title] => 'Low voltage operational amplifier bias circuit and method' [patent_app_type] => 1 [patent_app_number] => 8/619446 [patent_app_country] => US [patent_app_date] => 1996-03-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 9031 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/798/05798673.pdf [firstpage_image] =>[orig_patent_app_number] => 619446 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/619446
Low voltage operational amplifier bias circuit and method Mar 18, 1996 Issued
Array ( [id] => 3801795 [patent_doc_number] => 05781068 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-07-14 [patent_title] => 'Transadmittance amplifier for a motor' [patent_app_type] => 1 [patent_app_number] => 8/618235 [patent_app_country] => US [patent_app_date] => 1996-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 3381 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/781/05781068.pdf [firstpage_image] =>[orig_patent_app_number] => 618235 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/618235
Transadmittance amplifier for a motor Mar 13, 1996 Issued
Array ( [id] => 3801764 [patent_doc_number] => 05781066 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-07-14 [patent_title] => 'Pulse waveform generator' [patent_app_type] => 1 [patent_app_number] => 8/613477 [patent_app_country] => US [patent_app_date] => 1996-03-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 6480 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/781/05781066.pdf [firstpage_image] =>[orig_patent_app_number] => 613477 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/613477
Pulse waveform generator Mar 10, 1996 Issued
Array ( [id] => 3733809 [patent_doc_number] => 05652545 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-07-29 [patent_title] => 'Wide-band amplifier' [patent_app_type] => 1 [patent_app_number] => 8/609788 [patent_app_country] => US [patent_app_date] => 1996-03-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 15 [patent_no_of_words] => 6106 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/652/05652545.pdf [firstpage_image] =>[orig_patent_app_number] => 609788 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/609788
Wide-band amplifier Feb 29, 1996 Issued
Array ( [id] => 3734817 [patent_doc_number] => 05703529 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-12-30 [patent_title] => 'Amplifier circuit with reduced DC power related transients' [patent_app_type] => 1 [patent_app_number] => 8/609726 [patent_app_country] => US [patent_app_date] => 1996-03-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 6163 [patent_no_of_claims] => 40 [patent_no_of_ind_claims] => 10 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/703/05703529.pdf [firstpage_image] =>[orig_patent_app_number] => 609726 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/609726
Amplifier circuit with reduced DC power related transients Feb 29, 1996 Issued
Array ( [id] => 3736886 [patent_doc_number] => 05635873 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-06-03 [patent_title] => 'Operational amplifier having dummy isolation stage' [patent_app_type] => 1 [patent_app_number] => 8/608209 [patent_app_country] => US [patent_app_date] => 1996-02-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 11 [patent_no_of_words] => 3612 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/635/05635873.pdf [firstpage_image] =>[orig_patent_app_number] => 608209 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/608209
Operational amplifier having dummy isolation stage Feb 27, 1996 Issued
Array ( [id] => 3893436 [patent_doc_number] => 05714908 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-02-03 [patent_title] => 'Power correction method and circuit' [patent_app_type] => 1 [patent_app_number] => 8/607245 [patent_app_country] => US [patent_app_date] => 1996-02-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1900 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/714/05714908.pdf [firstpage_image] =>[orig_patent_app_number] => 607245 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/607245
Power correction method and circuit Feb 25, 1996 Issued
Array ( [id] => 3818255 [patent_doc_number] => 05812023 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-09-22 [patent_title] => 'Voltage offset compensation circuit' [patent_app_type] => 1 [patent_app_number] => 8/604676 [patent_app_country] => US [patent_app_date] => 1996-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 4825 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/812/05812023.pdf [firstpage_image] =>[orig_patent_app_number] => 604676 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/604676
Voltage offset compensation circuit Feb 20, 1996 Issued
Array ( [id] => 3823559 [patent_doc_number] => 05789983 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-08-04 [patent_title] => 'High-frequency amplifier having variable gain in response to input power level' [patent_app_type] => 1 [patent_app_number] => 8/604238 [patent_app_country] => US [patent_app_date] => 1996-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 3985 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/789/05789983.pdf [firstpage_image] =>[orig_patent_app_number] => 604238 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/604238
High-frequency amplifier having variable gain in response to input power level Feb 20, 1996 Issued
Array ( [id] => 3848740 [patent_doc_number] => 05708392 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-01-13 [patent_title] => 'Method and apparatus for providing limiting transimpedance amplification' [patent_app_type] => 1 [patent_app_number] => 8/602709 [patent_app_country] => US [patent_app_date] => 1996-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 5108 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/708/05708392.pdf [firstpage_image] =>[orig_patent_app_number] => 602709 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/602709
Method and apparatus for providing limiting transimpedance amplification Feb 15, 1996 Issued
90/004146 POWER AMPLIFYING APPARATUS Feb 14, 1996 Issued
Array ( [id] => 3863587 [patent_doc_number] => 05705950 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-01-06 [patent_title] => 'Hybrid solid state/vacuum tube audio amplifier' [patent_app_type] => 1 [patent_app_number] => 8/601758 [patent_app_country] => US [patent_app_date] => 1996-02-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 5409 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/705/05705950.pdf [firstpage_image] =>[orig_patent_app_number] => 601758 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/601758
Hybrid solid state/vacuum tube audio amplifier Feb 14, 1996 Issued
Array ( [id] => 3868022 [patent_doc_number] => 05796300 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-08-18 [patent_title] => 'Switched-capacitor amplifier offset voltage compensation circuit' [patent_app_type] => 1 [patent_app_number] => 8/601629 [patent_app_country] => US [patent_app_date] => 1996-02-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 6075 [patent_no_of_claims] => 33 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/796/05796300.pdf [firstpage_image] =>[orig_patent_app_number] => 601629 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/601629
Switched-capacitor amplifier offset voltage compensation circuit Feb 13, 1996 Issued
Array ( [id] => 3708935 [patent_doc_number] => 05675286 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-10-07 [patent_title] => 'Method and apparatus for an improved linear transmitter' [patent_app_type] => 1 [patent_app_number] => 8/599656 [patent_app_country] => US [patent_app_date] => 1996-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 5678 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/675/05675286.pdf [firstpage_image] =>[orig_patent_app_number] => 599656 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/599656
Method and apparatus for an improved linear transmitter Feb 11, 1996 Issued
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