Search

Timothy P. Callahan

Director (ID: 14944, Phone: (571)272-4066 , Office: P/2400 )

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

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2808256 [patent_doc_number] => 05146108 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-09-08 [patent_title] => 'Parabolic wave generator' [patent_app_type] => 1 [patent_app_number] => 7/754570 [patent_app_country] => US [patent_app_date] => 1991-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 5264 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 196 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/146/05146108.pdf [firstpage_image] =>[orig_patent_app_number] => 754570 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/754570
Parabolic wave generator Sep 3, 1991 Issued
Array ( [id] => 2811685 [patent_doc_number] => 05157342 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-10-20 [patent_title] => 'Precision digital phase lock loop circuit' [patent_app_type] => 1 [patent_app_number] => 7/752294 [patent_app_country] => US [patent_app_date] => 1991-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 3583 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/157/05157342.pdf [firstpage_image] =>[orig_patent_app_number] => 752294 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/752294
Precision digital phase lock loop circuit Aug 29, 1991 Issued
07/752864 DYNAMITE VOLTAGE INTEGRATION METHOD AND CIRCUITS FOR IMPLEMENTING AND APPLYING THE SAME Aug 29, 1991 Abandoned
Array ( [id] => 3027768 [patent_doc_number] => 05303100 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1994-04-12 [patent_title] => 'Magnetic disk device with floating-type magnetic head' [patent_app_type] => 1 [patent_app_number] => 7/752052 [patent_app_country] => US [patent_app_date] => 1991-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 22 [patent_no_of_words] => 6204 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/303/05303100.pdf [firstpage_image] =>[orig_patent_app_number] => 752052 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/752052
Magnetic disk device with floating-type magnetic head Aug 28, 1991 Issued
Array ( [id] => 2840462 [patent_doc_number] => 05120988 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-06-09 [patent_title] => 'Clock generator circuit providing reduced current consumption' [patent_app_type] => 1 [patent_app_number] => 7/751637 [patent_app_country] => US [patent_app_date] => 1991-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 3675 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 223 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/120/05120988.pdf [firstpage_image] =>[orig_patent_app_number] => 751637 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/751637
Clock generator circuit providing reduced current consumption Aug 25, 1991 Issued
Array ( [id] => 2954845 [patent_doc_number] => 05221863 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-06-22 [patent_title] => 'Phase-locked loop clock signal generator' [patent_app_type] => 1 [patent_app_number] => 7/749184 [patent_app_country] => US [patent_app_date] => 1991-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 21 [patent_no_of_words] => 9701 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/221/05221863.pdf [firstpage_image] =>[orig_patent_app_number] => 749184 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/749184
Phase-locked loop clock signal generator Aug 22, 1991 Issued
Array ( [id] => 2983092 [patent_doc_number] => 05252865 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-10-12 [patent_title] => 'Integrating phase detector' [patent_app_type] => 1 [patent_app_number] => 7/748799 [patent_app_country] => US [patent_app_date] => 1991-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 3288 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/252/05252865.pdf [firstpage_image] =>[orig_patent_app_number] => 748799 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/748799
Integrating phase detector Aug 21, 1991 Issued
Array ( [id] => 2980997 [patent_doc_number] => 05208546 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-05-04 [patent_title] => 'Adaptive charge pump for phase-locked loops' [patent_app_type] => 1 [patent_app_number] => 7/748136 [patent_app_country] => US [patent_app_date] => 1991-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 2550 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/208/05208546.pdf [firstpage_image] =>[orig_patent_app_number] => 748136 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/748136
Adaptive charge pump for phase-locked loops Aug 20, 1991 Issued
Array ( [id] => 2969140 [patent_doc_number] => 05264802 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-11-23 [patent_title] => 'Circuit and method for monitoring phase error modulation' [patent_app_type] => 1 [patent_app_number] => 7/747822 [patent_app_country] => US [patent_app_date] => 1991-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 3231 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/264/05264802.pdf [firstpage_image] =>[orig_patent_app_number] => 747822 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/747822
Circuit and method for monitoring phase error modulation Aug 20, 1991 Issued
Array ( [id] => 2924433 [patent_doc_number] => 05192876 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-03-09 [patent_title] => 'Flat pulse generator' [patent_app_type] => 1 [patent_app_number] => 7/749507 [patent_app_country] => US [patent_app_date] => 1991-08-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 3079 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 174 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/192/05192876.pdf [firstpage_image] =>[orig_patent_app_number] => 749507 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/749507
Flat pulse generator Aug 15, 1991 Issued
Array ( [id] => 2946507 [patent_doc_number] => 05223742 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-06-29 [patent_title] => 'Circuit and method for monitoring a pulse width modulated waveform' [patent_app_type] => 1 [patent_app_number] => 7/744756 [patent_app_country] => US [patent_app_date] => 1991-08-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 21 [patent_no_of_words] => 4473 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/223/05223742.pdf [firstpage_image] =>[orig_patent_app_number] => 744756 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/744756
Circuit and method for monitoring a pulse width modulated waveform Aug 13, 1991 Issued
Array ( [id] => 2932050 [patent_doc_number] => 05187385 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-02-16 [patent_title] => 'Latch circuit including filter for metastable prevention' [patent_app_type] => 1 [patent_app_number] => 7/744835 [patent_app_country] => US [patent_app_date] => 1991-08-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 13 [patent_no_of_words] => 2293 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/187/05187385.pdf [firstpage_image] =>[orig_patent_app_number] => 744835 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/744835
Latch circuit including filter for metastable prevention Aug 12, 1991 Issued
Array ( [id] => 2788923 [patent_doc_number] => 05164677 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-11-17 [patent_title] => 'Method and apparatus for synchronizing signals' [patent_app_type] => 1 [patent_app_number] => 7/740457 [patent_app_country] => US [patent_app_date] => 1991-08-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 4333 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/164/05164677.pdf [firstpage_image] =>[orig_patent_app_number] => 740457 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/740457
Method and apparatus for synchronizing signals Aug 4, 1991 Issued
Array ( [id] => 3105822 [patent_doc_number] => 05299074 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1994-03-29 [patent_title] => 'System for positioning a head in a transverse reference position on a multitrack digital magnetic tape' [patent_app_type] => 1 [patent_app_number] => 7/738223 [patent_app_country] => US [patent_app_date] => 1991-07-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 5421 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 317 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/299/05299074.pdf [firstpage_image] =>[orig_patent_app_number] => 738223 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/738223
System for positioning a head in a transverse reference position on a multitrack digital magnetic tape Jul 29, 1991 Issued
Array ( [id] => 2978688 [patent_doc_number] => 05182476 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-01-26 [patent_title] => 'Offset cancellation circuit and method of reducing pulse pairing' [patent_app_type] => 1 [patent_app_number] => 7/737282 [patent_app_country] => US [patent_app_date] => 1991-07-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 8 [patent_no_of_words] => 2588 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/182/05182476.pdf [firstpage_image] =>[orig_patent_app_number] => 737282 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/737282
Offset cancellation circuit and method of reducing pulse pairing Jul 28, 1991 Issued
Array ( [id] => 2900618 [patent_doc_number] => 05184084 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-02-02 [patent_title] => 'Double band frequency converting system' [patent_app_type] => 1 [patent_app_number] => 7/736923 [patent_app_country] => US [patent_app_date] => 1991-07-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2601 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/184/05184084.pdf [firstpage_image] =>[orig_patent_app_number] => 736923 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/736923
Double band frequency converting system Jul 28, 1991 Issued
Array ( [id] => 2973952 [patent_doc_number] => 05265063 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-11-23 [patent_title] => 'Semiconductor memory device having a plurality of SRAMs operable in synchronism with a clock permitting simultaneous access to multiple data' [patent_app_type] => 1 [patent_app_number] => 7/729738 [patent_app_country] => US [patent_app_date] => 1991-07-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 1884 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/265/05265063.pdf [firstpage_image] =>[orig_patent_app_number] => 729738 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/729738
Semiconductor memory device having a plurality of SRAMs operable in synchronism with a clock permitting simultaneous access to multiple data Jul 14, 1991 Issued
07/729676 INPUT INTERFACE CIRCUIT FOR AN AUTOMOTIVE MICROCOMPUTER Jul 14, 1991 Abandoned
07/730033 PHASE CORRECTOR FOR REDUNDANT CLOCK SYSTEMS AND METHOD Jul 11, 1991 Abandoned
07/728230 POWER HISTORY MONITOR CHIP Jul 9, 1991 Abandoned
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