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Hai Chi Pham

Examiner (ID: 18284)

Most Active Art Unit
2861
Art Unit(s)
2853, 2861
Total Applications
1967
Issued Applications
1679
Pending Applications
12
Abandoned Applications
277

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2622682 [patent_doc_number] => 04906401 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-06 [patent_title] => 'Use of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixtures' [patent_app_type] => 1 [patent_app_number] => 7/378470 [patent_app_country] => US [patent_app_date] => 1989-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1834 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/906/04906401.pdf [firstpage_image] =>[orig_patent_app_number] => 378470 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/378470
Use of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixtures Jul 11, 1989 Issued
Array ( [id] => 2629400 [patent_doc_number] => 04906752 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-06 [patent_title] => 'Liquid-crystal 5-phenylpyrimidine derivatives having sc or sc* phases and a process for preparing them' [patent_app_type] => 1 [patent_app_number] => 7/378466 [patent_app_country] => US [patent_app_date] => 1989-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4125 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 87 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/906/04906752.pdf [firstpage_image] =>[orig_patent_app_number] => 378466 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/378466
Liquid-crystal 5-phenylpyrimidine derivatives having sc or sc* phases and a process for preparing them Jul 11, 1989 Issued
Array ( [id] => 2582912 [patent_doc_number] => 04908152 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-13 [patent_title] => 'Cyclohexane derivative' [patent_app_type] => 1 [patent_app_number] => 7/331379 [patent_app_country] => US [patent_app_date] => 1989-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1943 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/908/04908152.pdf [firstpage_image] =>[orig_patent_app_number] => 331379 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/331379
Cyclohexane derivative Mar 30, 1989 Issued
Array ( [id] => 2552605 [patent_doc_number] => 04897216 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-01-30 [patent_title] => '2,3-difluorophenol derivatives' [patent_app_type] => 1 [patent_app_number] => 7/321046 [patent_app_country] => US [patent_app_date] => 1989-03-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6211 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/897/04897216.pdf [firstpage_image] =>[orig_patent_app_number] => 321046 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/321046
2,3-difluorophenol derivatives Mar 8, 1989 Issued
Array ( [id] => 2580643 [patent_doc_number] => 04925590 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-15 [patent_title] => 'Derivatives of 4-cyano-2,3-difluorophenol' [patent_app_type] => 1 [patent_app_number] => 7/321045 [patent_app_country] => US [patent_app_date] => 1989-03-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9043 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/925/04925590.pdf [firstpage_image] =>[orig_patent_app_number] => 321045 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/321045
Derivatives of 4-cyano-2,3-difluorophenol Mar 8, 1989 Issued
Array ( [id] => 2518830 [patent_doc_number] => 04880562 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-14 [patent_title] => 'Liquid crystal compound' [patent_app_type] => 1 [patent_app_number] => 7/312053 [patent_app_country] => US [patent_app_date] => 1989-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3964 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/880/04880562.pdf [firstpage_image] =>[orig_patent_app_number] => 312053 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/312053
Liquid crystal compound Feb 16, 1989 Issued
Array ( [id] => 2474482 [patent_doc_number] => 04876027 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-24 [patent_title] => 'Optically active composition, mesomorphic compound and liquid crystal device' [patent_app_type] => 1 [patent_app_number] => 7/302145 [patent_app_country] => US [patent_app_date] => 1989-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 5646 [patent_no_of_claims] => 38 [patent_no_of_ind_claims] => 9 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/876/04876027.pdf [firstpage_image] =>[orig_patent_app_number] => 302145 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/302145
Optically active composition, mesomorphic compound and liquid crystal device Jan 26, 1989 Issued
Array ( [id] => 2475290 [patent_doc_number] => 04882086 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-21 [patent_title] => 'Ferroelectric liquid crystal composition' [patent_app_type] => 1 [patent_app_number] => 7/298989 [patent_app_country] => US [patent_app_date] => 1989-01-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5194 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 66 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/882/04882086.pdf [firstpage_image] =>[orig_patent_app_number] => 298989 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/298989
Ferroelectric liquid crystal composition Jan 18, 1989 Issued
Array ( [id] => 2519174 [patent_doc_number] => 04877548 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-31 [patent_title] => 'Liquid crystal composition' [patent_app_type] => 1 [patent_app_number] => 7/290701 [patent_app_country] => US [patent_app_date] => 1988-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8401 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 175 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/877/04877548.pdf [firstpage_image] =>[orig_patent_app_number] => 290701 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/290701
Liquid crystal composition Dec 26, 1988 Issued
Array ( [id] => 2461414 [patent_doc_number] => 04844836 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-04 [patent_title] => 'Optically active cyanobiphenyl compound' [patent_app_type] => 1 [patent_app_number] => 7/276362 [patent_app_country] => US [patent_app_date] => 1988-11-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 676 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 11 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/844/04844836.pdf [firstpage_image] =>[orig_patent_app_number] => 276362 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/276362
Optically active cyanobiphenyl compound Nov 22, 1988 Issued
Array ( [id] => 2591657 [patent_doc_number] => 04923632 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-08 [patent_title] => 'Liquid crystal composition for twist nematic mode' [patent_app_type] => 1 [patent_app_number] => 7/272942 [patent_app_country] => US [patent_app_date] => 1988-11-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4574 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/923/04923632.pdf [firstpage_image] =>[orig_patent_app_number] => 272942 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/272942
Liquid crystal composition for twist nematic mode Nov 17, 1988 Issued
Array ( [id] => 2520593 [patent_doc_number] => 04883609 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-28 [patent_title] => 'Pyrimidine derivatives' [patent_app_type] => 1 [patent_app_number] => 7/271795 [patent_app_country] => US [patent_app_date] => 1988-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 3517 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 39 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/883/04883609.pdf [firstpage_image] =>[orig_patent_app_number] => 271795 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/271795
Pyrimidine derivatives Nov 15, 1988 Issued
Array ( [id] => 2626366 [patent_doc_number] => 04913530 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-03 [patent_title] => 'Liquid crystal display' [patent_app_type] => 1 [patent_app_number] => 7/269316 [patent_app_country] => US [patent_app_date] => 1988-11-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 3097 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/913/04913530.pdf [firstpage_image] =>[orig_patent_app_number] => 269316 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/269316
Liquid crystal display Nov 9, 1988 Issued
07/268257 OPTICALLY ACTIVE COMPOUND AND LIQUID CRYSTAL COMPOSITION CONTAINING SAME Nov 6, 1988 Abandoned
Array ( [id] => 2553974 [patent_doc_number] => 04853152 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-01 [patent_title] => 'Cyclohexane derivative' [patent_app_type] => 1 [patent_app_number] => 7/268184 [patent_app_country] => US [patent_app_date] => 1988-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3453 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 45 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/853/04853152.pdf [firstpage_image] =>[orig_patent_app_number] => 268184 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/268184
Cyclohexane derivative Nov 6, 1988 Issued
Array ( [id] => 2587023 [patent_doc_number] => 04917821 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-17 [patent_title] => 'Optically active mesomorphic compound and liquid crystal composition containing same' [patent_app_type] => 1 [patent_app_number] => 7/268265 [patent_app_country] => US [patent_app_date] => 1988-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4166 [patent_no_of_claims] => 41 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 61 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/917/04917821.pdf [firstpage_image] =>[orig_patent_app_number] => 268265 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/268265
Optically active mesomorphic compound and liquid crystal composition containing same Nov 6, 1988 Issued
Array ( [id] => 2643574 [patent_doc_number] => 04895671 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-01-23 [patent_title] => 'Optically active phenylpyrimidine compound and a liquid crystal composition' [patent_app_type] => 1 [patent_app_number] => 7/260986 [patent_app_country] => US [patent_app_date] => 1988-10-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2850 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/895/04895671.pdf [firstpage_image] =>[orig_patent_app_number] => 260986 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/260986
Optically active phenylpyrimidine compound and a liquid crystal composition Oct 20, 1988 Issued
Array ( [id] => 2563613 [patent_doc_number] => 04900473 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-13 [patent_title] => 'Optically active alkanoyloxy 2,5-diphenyl pyrimidine and liquid crystal compositions' [patent_app_type] => 1 [patent_app_number] => 7/260520 [patent_app_country] => US [patent_app_date] => 1988-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3043 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 37 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/900/04900473.pdf [firstpage_image] =>[orig_patent_app_number] => 260520 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/260520
Optically active alkanoyloxy 2,5-diphenyl pyrimidine and liquid crystal compositions Oct 19, 1988 Issued
Array ( [id] => 2563592 [patent_doc_number] => 04900472 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-13 [patent_title] => '2,5-diphenyl pyrimidine compounds and liquid crystal compositions' [patent_app_type] => 1 [patent_app_number] => 7/260519 [patent_app_country] => US [patent_app_date] => 1988-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5019 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 48 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/900/04900472.pdf [firstpage_image] =>[orig_patent_app_number] => 260519 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/260519
2,5-diphenyl pyrimidine compounds and liquid crystal compositions Oct 19, 1988 Issued
Array ( [id] => 2626402 [patent_doc_number] => 04913532 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-03 [patent_title] => 'Liquid crystal composition and liquid crystal display device using the same' [patent_app_type] => 1 [patent_app_number] => 7/259045 [patent_app_country] => US [patent_app_date] => 1988-10-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 12647 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 359 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/913/04913532.pdf [firstpage_image] =>[orig_patent_app_number] => 259045 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/259045
Liquid crystal composition and liquid crystal display device using the same Oct 16, 1988 Issued
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