Search

Timothy P. Callahan

Director (ID: 5413, Phone: (571)272-4066 , Office: P/2400 )

Most Active Art Unit
2504
Art Unit(s)
2899, 2504, 2816
Total Applications
793
Issued Applications
652
Pending Applications
7
Abandoned Applications
134

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2937949 [patent_doc_number] => 05189322 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-02-23 [patent_title] => 'Low-power sense amplifier with feedback' [patent_app_type] => 1 [patent_app_number] => 7/500637 [patent_app_country] => US [patent_app_date] => 1990-03-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 16 [patent_no_of_words] => 6829 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/189/05189322.pdf [firstpage_image] =>[orig_patent_app_number] => 500637 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/500637
Low-power sense amplifier with feedback Mar 27, 1990 Issued
Array ( [id] => 2737168 [patent_doc_number] => 05039873 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-08-13 [patent_title] => 'Microwave elements with impedance control circuits' [patent_app_type] => 1 [patent_app_number] => 7/497306 [patent_app_country] => US [patent_app_date] => 1990-03-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 13 [patent_no_of_words] => 2443 [patent_no_of_claims] => 4 [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] => patents/05/039/05039873.pdf [firstpage_image] =>[orig_patent_app_number] => 497306 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/497306
Microwave elements with impedance control circuits Mar 21, 1990 Issued
Array ( [id] => 2795160 [patent_doc_number] => 05103114 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-04-07 [patent_title] => 'Circuit technique for creating predetermined duty cycle' [patent_app_type] => 1 [patent_app_number] => 7/495465 [patent_app_country] => US [patent_app_date] => 1990-03-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1439 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 383 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/103/05103114.pdf [firstpage_image] =>[orig_patent_app_number] => 495465 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/495465
Circuit technique for creating predetermined duty cycle Mar 18, 1990 Issued
07/496050 VARIABLE DELAY LINE PHASE-LOCKED LOOP CIRCUIT SYNCHRONIZATION SYSTEM Mar 15, 1990 Abandoned
Array ( [id] => 2855149 [patent_doc_number] => 05105160 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-04-14 [patent_title] => 'Phase comparator using digital and analogue phase detectors' [patent_app_type] => 1 [patent_app_number] => 7/494034 [patent_app_country] => US [patent_app_date] => 1990-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 3291 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/105/05105160.pdf [firstpage_image] =>[orig_patent_app_number] => 494034 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/494034
Phase comparator using digital and analogue phase detectors Mar 13, 1990 Issued
Array ( [id] => 2851921 [patent_doc_number] => 05107145 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-04-21 [patent_title] => 'High speed current mode logic circuit with constant logic level current' [patent_app_type] => 1 [patent_app_number] => 7/492639 [patent_app_country] => US [patent_app_date] => 1990-03-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 5246 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/107/05107145.pdf [firstpage_image] =>[orig_patent_app_number] => 492639 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/492639
High speed current mode logic circuit with constant logic level current Mar 12, 1990 Issued
07/490655 SWITCHED CAPACITOR CIRCUIT Mar 7, 1990 Abandoned
Array ( [id] => 2750845 [patent_doc_number] => 05015884 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-05-14 [patent_title] => 'Multiple array high performance programmable logic device family' [patent_app_type] => 1 [patent_app_number] => 7/490808 [patent_app_country] => US [patent_app_date] => 1990-03-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 80 [patent_figures_cnt] => 92 [patent_no_of_words] => 22958 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 24 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/015/05015884.pdf [firstpage_image] =>[orig_patent_app_number] => 490808 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/490808
Multiple array high performance programmable logic device family Mar 6, 1990 Issued
07/489775 PROGRAMMABLE LOGIC DEVICE WITH OBSERVABLE INTERNAL STATES Mar 4, 1990 Abandoned
Array ( [id] => 2777903 [patent_doc_number] => 05075582 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-12-24 [patent_title] => 'Integratable bandpass filter circuit' [patent_app_type] => 1 [patent_app_number] => 7/487933 [patent_app_country] => US [patent_app_date] => 1990-03-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1575 [patent_no_of_claims] => 4 [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/05/075/05075582.pdf [firstpage_image] =>[orig_patent_app_number] => 487933 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/487933
Integratable bandpass filter circuit Mar 4, 1990 Issued
Array ( [id] => 2686089 [patent_doc_number] => 05045732 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-09-03 [patent_title] => 'Polygon circuit' [patent_app_type] => 1 [patent_app_number] => 7/493829 [patent_app_country] => US [patent_app_date] => 1990-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 2788 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/045/05045732.pdf [firstpage_image] =>[orig_patent_app_number] => 493829 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/493829
Polygon circuit Feb 26, 1990 Issued
Array ( [id] => 2791139 [patent_doc_number] => 05093628 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-03-03 [patent_title] => 'Current-pulse integrating circuit and phase-locked loop' [patent_app_type] => 1 [patent_app_number] => 7/485151 [patent_app_country] => US [patent_app_date] => 1990-02-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 2188 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/093/05093628.pdf [firstpage_image] =>[orig_patent_app_number] => 485151 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/485151
Current-pulse integrating circuit and phase-locked loop Feb 25, 1990 Issued
Array ( [id] => 2810612 [patent_doc_number] => 05157286 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-10-20 [patent_title] => 'Conditional clocking of the second latch of a shift register ratch' [patent_app_type] => 1 [patent_app_number] => 7/484144 [patent_app_country] => US [patent_app_date] => 1990-02-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2363 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 275 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/157/05157286.pdf [firstpage_image] =>[orig_patent_app_number] => 484144 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/484144
Conditional clocking of the second latch of a shift register ratch Feb 22, 1990 Issued
Array ( [id] => 2877704 [patent_doc_number] => 05091664 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-02-25 [patent_title] => 'Insulated gate bipolar transistor circuit with overcurrent protection' [patent_app_type] => 1 [patent_app_number] => 7/482896 [patent_app_country] => US [patent_app_date] => 1990-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 2530 [patent_no_of_claims] => 6 [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/05/091/05091664.pdf [firstpage_image] =>[orig_patent_app_number] => 482896 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/482896
Insulated gate bipolar transistor circuit with overcurrent protection Feb 21, 1990 Issued
Array ( [id] => 2713790 [patent_doc_number] => 05017801 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-05-21 [patent_title] => 'Method and apparatus for converting a gap-infested read-in clock into a gap-free read-out clock' [patent_app_type] => 1 [patent_app_number] => 7/476714 [patent_app_country] => US [patent_app_date] => 1990-02-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 1951 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 284 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/017/05017801.pdf [firstpage_image] =>[orig_patent_app_number] => 476714 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/476714
Method and apparatus for converting a gap-infested read-in clock into a gap-free read-out clock Feb 7, 1990 Issued
Array ( [id] => 2851815 [patent_doc_number] => 05111063 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-05-05 [patent_title] => 'Integrated clock driver circuit' [patent_app_type] => 1 [patent_app_number] => 7/474613 [patent_app_country] => US [patent_app_date] => 1990-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 3128 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/111/05111063.pdf [firstpage_image] =>[orig_patent_app_number] => 474613 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/474613
Integrated clock driver circuit Feb 4, 1990 Issued
Array ( [id] => 2737590 [patent_doc_number] => 05051618 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-09-24 [patent_title] => 'High voltage system using enhancement and depletion field effect transistors' [patent_app_type] => 1 [patent_app_number] => 7/468917 [patent_app_country] => US [patent_app_date] => 1990-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 1905 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/051/05051618.pdf [firstpage_image] =>[orig_patent_app_number] => 468917 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/468917
High voltage system using enhancement and depletion field effect transistors Jan 22, 1990 Issued
Array ( [id] => 2729599 [patent_doc_number] => 05057785 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-15 [patent_title] => 'Method and circuitry to suppress additive disturbances in data channels' [patent_app_type] => 1 [patent_app_number] => 7/468526 [patent_app_country] => US [patent_app_date] => 1990-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2378 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/057/05057785.pdf [firstpage_image] =>[orig_patent_app_number] => 468526 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/468526
Method and circuitry to suppress additive disturbances in data channels Jan 22, 1990 Issued
Array ( [id] => 2753166 [patent_doc_number] => 05030859 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-09 [patent_title] => 'Drive device for a CMOS sense amplifier in a dynamic semiconductor memory device' [patent_app_type] => 1 [patent_app_number] => 7/454443 [patent_app_country] => US [patent_app_date] => 1989-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2123 [patent_no_of_claims] => 3 [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/05/030/05030859.pdf [firstpage_image] =>[orig_patent_app_number] => 454443 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/454443
Drive device for a CMOS sense amplifier in a dynamic semiconductor memory device Dec 20, 1989 Issued
Array ( [id] => 2831476 [patent_doc_number] => 05117135 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-05-26 [patent_title] => 'Frequency and phase detection circuit in NRZ bit synchronous system' [patent_app_type] => 1 [patent_app_number] => 7/454160 [patent_app_country] => US [patent_app_date] => 1989-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 1570 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 239 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/117/05117135.pdf [firstpage_image] =>[orig_patent_app_number] => 454160 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/454160
Frequency and phase detection circuit in NRZ bit synchronous system Dec 20, 1989 Issued
Menu