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
09/041356 ELECTRICAL POWER AMPLIFIER FOR CONTINOUS CARDIAC OUTPUT MONITORING Mar 11, 1998 Issued
Array ( [id] => 3957328 [patent_doc_number] => 05977832 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-11-02 [patent_title] => 'Method of biasing an MOS IC to operate at the zero temperature coefficient point' [patent_app_type] => 1 [patent_app_number] => 8/993135 [patent_app_country] => US [patent_app_date] => 1997-12-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2034 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/977/05977832.pdf [firstpage_image] =>[orig_patent_app_number] => 993135 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/993135
Method of biasing an MOS IC to operate at the zero temperature coefficient point Dec 17, 1997 Issued
Array ( [id] => 3782810 [patent_doc_number] => 05808513 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-09-15 [patent_title] => 'Rail-to-rail input common mode range differential amplifier that operates with very low rail-to-rail voltages' [patent_app_type] => 1 [patent_app_number] => 8/988346 [patent_app_country] => US [patent_app_date] => 1997-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3574 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 299 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/808/05808513.pdf [firstpage_image] =>[orig_patent_app_number] => 988346 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/988346
Rail-to-rail input common mode range differential amplifier that operates with very low rail-to-rail voltages Dec 9, 1997 Issued
Array ( [id] => 3987378 [patent_doc_number] => 05949284 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-09-07 [patent_title] => 'CMOS buffer amplifier' [patent_app_type] => 1 [patent_app_number] => 8/968056 [patent_app_country] => US [patent_app_date] => 1997-11-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 4573 [patent_no_of_claims] => 35 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 268 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/949/05949284.pdf [firstpage_image] =>[orig_patent_app_number] => 968056 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/968056
CMOS buffer amplifier Nov 9, 1997 Issued
Array ( [id] => 4004973 [patent_doc_number] => 05923216 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-07-13 [patent_title] => 'Frequency selective amplifier circuit' [patent_app_type] => 1 [patent_app_number] => 8/875568 [patent_app_country] => US [patent_app_date] => 1997-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 9090 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/923/05923216.pdf [firstpage_image] =>[orig_patent_app_number] => 875568 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/875568
Frequency selective amplifier circuit Oct 19, 1997 Issued
Array ( [id] => 4015325 [patent_doc_number] => 05889432 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-03-30 [patent_title] => 'Two-stage differential microwave amplifier with bias current sharing and automatic gain control' [patent_app_type] => 1 [patent_app_number] => 8/941125 [patent_app_country] => US [patent_app_date] => 1997-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 1660 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 403 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/889/05889432.pdf [firstpage_image] =>[orig_patent_app_number] => 941125 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/941125
Two-stage differential microwave amplifier with bias current sharing and automatic gain control Sep 29, 1997 Issued
Array ( [id] => 3941551 [patent_doc_number] => 05939938 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-08-17 [patent_title] => 'Amplifier circuit with reduced DC power related turn-on and turn-off transients' [patent_app_type] => 1 [patent_app_number] => 8/928036 [patent_app_country] => US [patent_app_date] => 1997-09-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 15 [patent_no_of_words] => 8177 [patent_no_of_claims] => 48 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/939/05939938.pdf [firstpage_image] =>[orig_patent_app_number] => 928036 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/928036
Amplifier circuit with reduced DC power related turn-on and turn-off transients Sep 10, 1997 Issued
Array ( [id] => 3989396 [patent_doc_number] => 05861778 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-01-19 [patent_title] => 'Low noise amplifier structure' [patent_app_type] => 1 [patent_app_number] => 8/925509 [patent_app_country] => US [patent_app_date] => 1997-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3072 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 397 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/861/05861778.pdf [firstpage_image] =>[orig_patent_app_number] => 925509 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/925509
Low noise amplifier structure Sep 7, 1997 Issued
Array ( [id] => 4023400 [patent_doc_number] => 05907261 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-05-25 [patent_title] => 'Method and apparatus for controlling signal amplitude level' [patent_app_type] => 1 [patent_app_number] => 8/924649 [patent_app_country] => US [patent_app_date] => 1997-09-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3784 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/907/05907261.pdf [firstpage_image] =>[orig_patent_app_number] => 924649 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/924649
Method and apparatus for controlling signal amplitude level Sep 4, 1997 Issued
Array ( [id] => 4005028 [patent_doc_number] => 05923219 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-07-13 [patent_title] => 'Automatic threshold control circuit and signal amplifying circuit for amplifying signals by compensating for low-frequency response of photodetector' [patent_app_type] => 1 [patent_app_number] => 8/912688 [patent_app_country] => US [patent_app_date] => 1997-08-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 31 [patent_figures_cnt] => 39 [patent_no_of_words] => 14015 [patent_no_of_claims] => 47 [patent_no_of_ind_claims] => 15 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/923/05923219.pdf [firstpage_image] =>[orig_patent_app_number] => 912688 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/912688
Automatic threshold control circuit and signal amplifying circuit for amplifying signals by compensating for low-frequency response of photodetector Aug 17, 1997 Issued
Array ( [id] => 4000366 [patent_doc_number] => 05892399 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-04-06 [patent_title] => 'Current boost circuit for reducing crossover distortion in an operational amplifier' [patent_app_type] => 1 [patent_app_number] => 8/901147 [patent_app_country] => US [patent_app_date] => 1997-07-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 920 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 275 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/892/05892399.pdf [firstpage_image] =>[orig_patent_app_number] => 901147 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/901147
Current boost circuit for reducing crossover distortion in an operational amplifier Jul 27, 1997 Issued
Array ( [id] => 4050311 [patent_doc_number] => 05874856 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-02-23 [patent_title] => 'Feed forward amplifier' [patent_app_type] => 1 [patent_app_number] => 8/885749 [patent_app_country] => US [patent_app_date] => 1997-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2936 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/874/05874856.pdf [firstpage_image] =>[orig_patent_app_number] => 885749 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/885749
Feed forward amplifier Jun 29, 1997 Issued
Array ( [id] => 3989373 [patent_doc_number] => 05861776 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-01-19 [patent_title] => 'High efficiency RF amplifier' [patent_app_type] => 1 [patent_app_number] => 8/885375 [patent_app_country] => US [patent_app_date] => 1997-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 3318 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/861/05861776.pdf [firstpage_image] =>[orig_patent_app_number] => 885375 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/885375
High efficiency RF amplifier Jun 29, 1997 Issued
Array ( [id] => 4004959 [patent_doc_number] => 05923215 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-07-13 [patent_title] => 'Linearized amplifier' [patent_app_type] => 1 [patent_app_number] => 8/884304 [patent_app_country] => US [patent_app_date] => 1997-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2832 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/923/05923215.pdf [firstpage_image] =>[orig_patent_app_number] => 884304 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/884304
Linearized amplifier Jun 26, 1997 Issued
Array ( [id] => 3982984 [patent_doc_number] => 05917378 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-06-29 [patent_title] => 'Rail-to-rail type of operational amplifier with a low offset voltage achieved by mixed compensation' [patent_app_type] => 1 [patent_app_number] => 8/883958 [patent_app_country] => US [patent_app_date] => 1997-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3082 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 435 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/917/05917378.pdf [firstpage_image] =>[orig_patent_app_number] => 883958 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/883958
Rail-to-rail type of operational amplifier with a low offset voltage achieved by mixed compensation Jun 26, 1997 Issued
Array ( [id] => 3975364 [patent_doc_number] => 05886578 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-03-23 [patent_title] => 'Differential amplifier including bias circuit with bias resistor' [patent_app_type] => 1 [patent_app_number] => 8/883455 [patent_app_country] => US [patent_app_date] => 1997-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 23 [patent_no_of_words] => 6947 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/886/05886578.pdf [firstpage_image] =>[orig_patent_app_number] => 883455 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/883455
Differential amplifier including bias circuit with bias resistor Jun 25, 1997 Issued
Array ( [id] => 4050697 [patent_doc_number] => 05912589 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-06-15 [patent_title] => 'Arrangement for stabilizing the gain bandwidth product' [patent_app_type] => 1 [patent_app_number] => 8/883007 [patent_app_country] => US [patent_app_date] => 1997-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 5523 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 305 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/912/05912589.pdf [firstpage_image] =>[orig_patent_app_number] => 883007 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/883007
Arrangement for stabilizing the gain bandwidth product Jun 25, 1997 Issued
Array ( [id] => 3911113 [patent_doc_number] => 05898337 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-04-27 [patent_title] => 'Output signal level control circuit using different detecting sections in different output signal levels' [patent_app_type] => 1 [patent_app_number] => 8/877619 [patent_app_country] => US [patent_app_date] => 1997-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 4277 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/898/05898337.pdf [firstpage_image] =>[orig_patent_app_number] => 877619 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/877619
Output signal level control circuit using different detecting sections in different output signal levels Jun 17, 1997 Issued
Array ( [id] => 4000390 [patent_doc_number] => 05892401 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-04-06 [patent_title] => 'Solid state power amplifier with low distortion noise protection limiter' [patent_app_type] => 1 [patent_app_number] => 8/876759 [patent_app_country] => US [patent_app_date] => 1997-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 2335 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/892/05892401.pdf [firstpage_image] =>[orig_patent_app_number] => 876759 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/876759
Solid state power amplifier with low distortion noise protection limiter Jun 15, 1997 Issued
Array ( [id] => 4069409 [patent_doc_number] => 05896064 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-04-20 [patent_title] => 'Gain controller for variable-gain amplifier' [patent_app_type] => 1 [patent_app_number] => 8/872687 [patent_app_country] => US [patent_app_date] => 1997-06-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 3117 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/896/05896064.pdf [firstpage_image] =>[orig_patent_app_number] => 872687 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/872687
Gain controller for variable-gain amplifier Jun 10, 1997 Issued
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