Search

Karl D. Frech

Examiner (ID: 4195, Phone: (571)272-2390 , Office: P/2887 )

Most Active Art Unit
2887
Art Unit(s)
2876, 2505, 2514, 2887
Total Applications
2278
Issued Applications
1870
Pending Applications
125
Abandoned Applications
285

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2016771 [patent_doc_number] => 04369366 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-01-18 [patent_title] => 'Photoelectric digital measuring instrument balancing circuit' [patent_app_type] => 1 [patent_app_number] => 6/201038 [patent_app_country] => US [patent_app_date] => 1980-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1854 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 212 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/369/04369366.pdf [firstpage_image] =>[orig_patent_app_number] => 201038 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/201038
Photoelectric digital measuring instrument balancing circuit Oct 26, 1980 Issued
Array ( [id] => 2219432 [patent_doc_number] => 04614918 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-09-30 [patent_title] => 'Frequency generator with digitally controlled phase modulation' [patent_app_type] => 1 [patent_app_number] => 6/200728 [patent_app_country] => US [patent_app_date] => 1980-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2508 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 36 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/614/04614918.pdf [firstpage_image] =>[orig_patent_app_number] => 200728 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/200728
Frequency generator with digitally controlled phase modulation Oct 26, 1980 Issued
06/199558 OPTICAL RECEIVER WITH IMPROVED DYNAMIC RANGE Oct 21, 1980 Abandoned
Array ( [id] => 2132963 [patent_doc_number] => 04432098 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-02-14 [patent_title] => 'Apparatus and method for transfer of information by means of a curl-free magnetic vector potential field' [patent_app_type] => 1 [patent_app_number] => 6/198324 [patent_app_country] => US [patent_app_date] => 1980-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 7 [patent_no_of_words] => 2698 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/432/04432098.pdf [firstpage_image] =>[orig_patent_app_number] => 198324 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/198324
Apparatus and method for transfer of information by means of a curl-free magnetic vector potential field Oct 19, 1980 Issued
Array ( [id] => 2063023 [patent_doc_number] => 04409594 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-10-11 [patent_title] => 'Apparatus for performing radio frequency pulse modulation with automatic modulation control' [patent_app_type] => 1 [patent_app_number] => 6/198300 [patent_app_country] => US [patent_app_date] => 1980-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 1793 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 231 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/409/04409594.pdf [firstpage_image] =>[orig_patent_app_number] => 198300 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/198300
Apparatus for performing radio frequency pulse modulation with automatic modulation control Oct 19, 1980 Issued
Array ( [id] => 2103722 [patent_doc_number] => 04429288 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-01-31 [patent_title] => 'Apparatus and method for modulation of a curl-free magnetic vector potential field' [patent_app_type] => 1 [patent_app_number] => 6/198380 [patent_app_country] => US [patent_app_date] => 1980-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 14 [patent_no_of_words] => 3621 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/429/04429288.pdf [firstpage_image] =>[orig_patent_app_number] => 198380 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/198380
Apparatus and method for modulation of a curl-free magnetic vector potential field Oct 19, 1980 Issued
Array ( [id] => 2048232 [patent_doc_number] => 04387348 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-06-07 [patent_title] => 'Phase-controlled high frequency oscillator' [patent_app_type] => 1 [patent_app_number] => 6/197942 [patent_app_country] => US [patent_app_date] => 1980-10-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 3177 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 289 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/387/04387348.pdf [firstpage_image] =>[orig_patent_app_number] => 197942 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/197942
Phase-controlled high frequency oscillator Oct 16, 1980 Issued
Array ( [id] => 1976170 [patent_doc_number] => 04365213 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-12-21 [patent_title] => 'Low frequency astable oscillator having switchable current sources' [patent_app_type] => 1 [patent_app_number] => 6/197386 [patent_app_country] => US [patent_app_date] => 1980-10-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2496 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 245 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/365/04365213.pdf [firstpage_image] =>[orig_patent_app_number] => 197386 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/197386
Low frequency astable oscillator having switchable current sources Oct 15, 1980 Issued
Array ( [id] => 2028357 [patent_doc_number] => 04378533 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-03-29 [patent_title] => 'Modulator for injecting signals into a polyphase power transmission system' [patent_app_type] => 1 [patent_app_number] => 6/197048 [patent_app_country] => US [patent_app_date] => 1980-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 6420 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 293 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/378/04378533.pdf [firstpage_image] =>[orig_patent_app_number] => 197048 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/197048
Modulator for injecting signals into a polyphase power transmission system Oct 14, 1980 Issued
Array ( [id] => 2006699 [patent_doc_number] => 04401887 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-08-30 [patent_title] => 'Reducing flare in self-scanned photosensor arrays' [patent_app_type] => 1 [patent_app_number] => 6/192719 [patent_app_country] => US [patent_app_date] => 1980-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 1000 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/401/04401887.pdf [firstpage_image] =>[orig_patent_app_number] => 192719 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/192719
Reducing flare in self-scanned photosensor arrays Sep 30, 1980 Issued
Array ( [id] => 1976164 [patent_doc_number] => 04365212 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-12-21 [patent_title] => 'Gated oscillator including initialization apparatus for enhancing periodicity' [patent_app_type] => 1 [patent_app_number] => 6/192364 [patent_app_country] => US [patent_app_date] => 1980-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 1967 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 212 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/365/04365212.pdf [firstpage_image] =>[orig_patent_app_number] => 192364 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/192364
Gated oscillator including initialization apparatus for enhancing periodicity Sep 29, 1980 Issued
Array ( [id] => 2028297 [patent_doc_number] => 04378526 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-03-29 [patent_title] => 'Pulse code demodulator for frequency shift keyed data' [patent_app_type] => 1 [patent_app_number] => 6/190904 [patent_app_country] => US [patent_app_date] => 1980-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2305 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 216 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/378/04378526.pdf [firstpage_image] =>[orig_patent_app_number] => 190904 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/190904
Pulse code demodulator for frequency shift keyed data Sep 24, 1980 Issued
Array ( [id] => 1981589 [patent_doc_number] => 04359693 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-11-16 [patent_title] => 'Full wave amplitude modulation detector circuit' [patent_app_type] => 1 [patent_app_number] => 6/187006 [patent_app_country] => US [patent_app_date] => 1980-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 1118 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/359/04359693.pdf [firstpage_image] =>[orig_patent_app_number] => 187006 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/187006
Full wave amplitude modulation detector circuit Sep 14, 1980 Issued
Array ( [id] => 2104873 [patent_doc_number] => 04442349 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-04-10 [patent_title] => 'Circuitry for the generation and synchronous detection of optical pulsed signals' [patent_app_type] => 1 [patent_app_number] => 6/187518 [patent_app_country] => US [patent_app_date] => 1980-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 3160 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/442/04442349.pdf [firstpage_image] =>[orig_patent_app_number] => 187518 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/187518
Circuitry for the generation and synchronous detection of optical pulsed signals Sep 14, 1980 Issued
Array ( [id] => 2048863 [patent_doc_number] => 04379271 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-04-05 [patent_title] => 'Input selection arrangement for applying different local oscillator signals to a prescaler of a phase-lock loop tuning system' [patent_app_type] => 1 [patent_app_number] => 6/180580 [patent_app_country] => US [patent_app_date] => 1980-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3521 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/379/04379271.pdf [firstpage_image] =>[orig_patent_app_number] => 180580 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/180580
Input selection arrangement for applying different local oscillator signals to a prescaler of a phase-lock loop tuning system Aug 24, 1980 Issued
Array ( [id] => 1988688 [patent_doc_number] => 04352982 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-10-05 [patent_title] => 'Photodiode circuit using a low noise artificial load resistor' [patent_app_type] => 1 [patent_app_number] => 6/180078 [patent_app_country] => US [patent_app_date] => 1980-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 2723 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 267 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/352/04352982.pdf [firstpage_image] =>[orig_patent_app_number] => 180078 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/180078
Photodiode circuit using a low noise artificial load resistor Aug 20, 1980 Issued
Array ( [id] => 1999144 [patent_doc_number] => 04374323 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-02-15 [patent_title] => 'Focusing apparatus for use in a system for recovering information from an optically-readable storage medium' [patent_app_type] => 1 [patent_app_number] => 6/177148 [patent_app_country] => US [patent_app_date] => 1980-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 4501 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 261 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/374/04374323.pdf [firstpage_image] =>[orig_patent_app_number] => 177148 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/177148
Focusing apparatus for use in a system for recovering information from an optically-readable storage medium Aug 10, 1980 Issued
06/202444 PHASE CORRECTION CIRCUIT Aug 7, 1980 Abandoned
Array ( [id] => 1934227 [patent_doc_number] => 04347483 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-08-31 [patent_title] => 'Frequency and phase lock loop with separated AFC and phase locking' [patent_app_type] => 1 [patent_app_number] => 6/172920 [patent_app_country] => US [patent_app_date] => 1980-07-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 24 [patent_no_of_words] => 5237 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 206 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/347/04347483.pdf [firstpage_image] =>[orig_patent_app_number] => 172920 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/172920
Frequency and phase lock loop with separated AFC and phase locking Jul 27, 1980 Issued
Array ( [id] => 1987379 [patent_doc_number] => 04360788 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-11-23 [patent_title] => 'Phase-locked loop frequency synthesizer' [patent_app_type] => 1 [patent_app_number] => 6/168066 [patent_app_country] => US [patent_app_date] => 1980-07-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 19395 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/360/04360788.pdf [firstpage_image] =>[orig_patent_app_number] => 168066 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/168066
Phase-locked loop frequency synthesizer Jul 13, 1980 Issued
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