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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
Array ( [id] => 2871419 [patent_doc_number] => 05150399 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-09-22 [patent_title] => 'Public telephone interface and method of operating the same' [patent_app_type] => 1 [patent_app_number] => 7/572764 [patent_app_country] => US [patent_app_date] => 1990-08-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 9694 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 188 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/150/05150399.pdf [firstpage_image] =>[orig_patent_app_number] => 572764 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/572764
Public telephone interface and method of operating the same Aug 26, 1990 Issued
Array ( [id] => 2906680 [patent_doc_number] => 05241584 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-08-31 [patent_title] => 'Response time evaluation unit' [patent_app_type] => 1 [patent_app_number] => 7/570778 [patent_app_country] => US [patent_app_date] => 1990-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 7052 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/241/05241584.pdf [firstpage_image] =>[orig_patent_app_number] => 570778 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/570778
Response time evaluation unit Aug 21, 1990 Issued
Array ( [id] => 4145727 [patent_doc_number] => 06016344 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-01-18 [patent_title] => 'Telephonic-interface statistical analysis system' [patent_app_type] => 1 [patent_app_number] => 7/335923 [patent_app_country] => US [patent_app_date] => 1989-04-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 12165 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 223 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/016/06016344.pdf [firstpage_image] =>[orig_patent_app_number] => 335923 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/335923
Telephonic-interface statistical analysis system Apr 9, 1989 Issued
07/006852 HERBICIDAL COMPOSITION Jan 26, 1987 Abandoned
Array ( [id] => 3340034 [patent_doc_number] => 04231819 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1980-11-04 [patent_title] => 'Dielectric isolation method using shallow oxide and polycrystalline silicon utilizing a preliminary etching step' [patent_app_type] => 1 [patent_app_number] => 6/061374 [patent_app_country] => US [patent_app_date] => 1979-07-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 3 [patent_no_of_words] => 2698 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 200 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/231/04231819.pdf [firstpage_image] =>[orig_patent_app_number] => 061374 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/061374
Dielectric isolation method using shallow oxide and polycrystalline silicon utilizing a preliminary etching step Jul 26, 1979 Issued
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