Search

Fan S. Tsang

Supervisory Patent Examiner (ID: 5500, Phone: (571)272-7547 , Office: P/2653 )

Most Active Art Unit
2601
Art Unit(s)
2614, 2601, 2742, 2653, 2694, 2748, 2645, 2746, 2787
Total Applications
480
Issued Applications
302
Pending Applications
81
Abandoned Applications
113

Applications

Application numberTitle of the applicationFiling DateStatus
07/675488 CONFIRMING IDENTITY OF TELEPHONE CALLER Mar 25, 1991 Abandoned
07/672858 AUTOMATIC PERSONAL SEARCH TELEPHONE SYSTEM Mar 19, 1991 Abandoned
Array ( [id] => 3069371 [patent_doc_number] => 05339354 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1994-08-16 [patent_title] => 'Shared line telephone answering device' [patent_app_type] => 1 [patent_app_number] => 7/671504 [patent_app_country] => US [patent_app_date] => 1991-03-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 8779 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/339/05339354.pdf [firstpage_image] =>[orig_patent_app_number] => 671504 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/671504
Shared line telephone answering device Mar 18, 1991 Issued
07/660279 INTEGRATED APPLICATION CONTROLLED CALL PROCESSING AND MESSAGING SYSTEM Feb 20, 1991 Abandoned
07/658400 TELEPHONE EXCHANGE SYSTEM Feb 19, 1991 Abandoned
07/658405 PRIVATE BRANCH EXCHANGE SYSTEM Feb 19, 1991 Abandoned
07/654003 NETWORK SYSTEMS Feb 11, 1991 Abandoned
Array ( [id] => 2989095 [patent_doc_number] => 05257318 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-10-26 [patent_title] => 'Earphone spacer with electronically variable sound level' [patent_app_type] => 1 [patent_app_number] => 7/653187 [patent_app_country] => US [patent_app_date] => 1991-02-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 4 [patent_no_of_words] => 1054 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/257/05257318.pdf [firstpage_image] =>[orig_patent_app_number] => 653187 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/653187
Earphone spacer with electronically variable sound level Feb 10, 1991 Issued
Array ( [id] => 2975210 [patent_doc_number] => 05274695 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-12-28 [patent_title] => 'System for verifying the identity of a caller in a telecommunications network' [patent_app_type] => 1 [patent_app_number] => 7/640218 [patent_app_country] => US [patent_app_date] => 1991-01-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 4039 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/274/05274695.pdf [firstpage_image] =>[orig_patent_app_number] => 640218 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/640218
System for verifying the identity of a caller in a telecommunications network Jan 10, 1991 Issued
07/640337 TELEPHONIC-INTERFACE STATISTICAL ANALYSIS SYSTEM Jan 10, 1991 Abandoned
Array ( [id] => 2980817 [patent_doc_number] => 05259022 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-11-02 [patent_title] => 'Detector for use with an automatic disconnect feature in a telephone answering machine' [patent_app_type] => 1 [patent_app_number] => 7/638501 [patent_app_country] => US [patent_app_date] => 1991-01-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2013 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 260 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/259/05259022.pdf [firstpage_image] =>[orig_patent_app_number] => 638501 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/638501
Detector for use with an automatic disconnect feature in a telephone answering machine Jan 6, 1991 Issued
07/638506 DEFECTIVE MEMORY CIRCUIT FOR AUDIO RECORDING Jan 6, 1991 Abandoned
07/634255 DYNAMIC NETWORK CALL DISTRIBUTOR Dec 25, 1990 Abandoned
Array ( [id] => 2900625 [patent_doc_number] => 05239574 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-08-24 [patent_title] => 'Methods and apparatus for detecting voice information in telephone-type signals' [patent_app_type] => 1 [patent_app_number] => 7/625369 [patent_app_country] => US [patent_app_date] => 1990-12-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 2613 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/239/05239574.pdf [firstpage_image] =>[orig_patent_app_number] => 625369 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/625369
Methods and apparatus for detecting voice information in telephone-type signals Dec 10, 1990 Issued
Array ( [id] => 2988909 [patent_doc_number] => 05257309 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-10-26 [patent_title] => 'Dual tone multifrequency signal detection and identification methods and apparatus' [patent_app_type] => 1 [patent_app_number] => 7/625366 [patent_app_country] => US [patent_app_date] => 1990-12-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 15 [patent_no_of_words] => 4498 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 223 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/257/05257309.pdf [firstpage_image] =>[orig_patent_app_number] => 625366 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/625366
Dual tone multifrequency signal detection and identification methods and apparatus Dec 10, 1990 Issued
Array ( [id] => 2900680 [patent_doc_number] => 05239577 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-08-24 [patent_title] => 'Network and method for providing cross-media connections' [patent_app_type] => 1 [patent_app_number] => 7/621607 [patent_app_country] => US [patent_app_date] => 1990-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3895 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/239/05239577.pdf [firstpage_image] =>[orig_patent_app_number] => 621607 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/621607
Network and method for providing cross-media connections Dec 2, 1990 Issued
Array ( [id] => 2923723 [patent_doc_number] => 05228075 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-07-13 [patent_title] => 'Telephone capable of selectively accepting callers and enabling partial recognition of callers' [patent_app_type] => 1 [patent_app_number] => 7/618640 [patent_app_country] => US [patent_app_date] => 1990-11-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1525 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 272 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/228/05228075.pdf [firstpage_image] =>[orig_patent_app_number] => 618640 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/618640
Telephone capable of selectively accepting callers and enabling partial recognition of callers Nov 26, 1990 Issued
Array ( [id] => 2881745 [patent_doc_number] => 05163082 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-11-10 [patent_title] => 'Memory management methods and apparatus for digital telephone answering devices' [patent_app_type] => 1 [patent_app_number] => 7/592673 [patent_app_country] => US [patent_app_date] => 1990-10-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 4101 [patent_no_of_claims] => 12 [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/05/163/05163082.pdf [firstpage_image] =>[orig_patent_app_number] => 592673 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/592673
Memory management methods and apparatus for digital telephone answering devices Oct 3, 1990 Issued
Array ( [id] => 2866080 [patent_doc_number] => 05113430 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-05-12 [patent_title] => 'Enhanced wide area audio response network' [patent_app_type] => 1 [patent_app_number] => 7/591047 [patent_app_country] => US [patent_app_date] => 1990-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 8150 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/113/05113430.pdf [firstpage_image] =>[orig_patent_app_number] => 591047 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/591047
Enhanced wide area audio response network Sep 30, 1990 Issued
Array ( [id] => 2818618 [patent_doc_number] => 05157711 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-10-20 [patent_title] => 'Telephone terminal device' [patent_app_type] => 1 [patent_app_number] => 7/573705 [patent_app_country] => US [patent_app_date] => 1990-08-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 5473 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/157/05157711.pdf [firstpage_image] =>[orig_patent_app_number] => 573705 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/573705
Telephone terminal device Aug 27, 1990 Issued
Menu