Search

Calvin K. Cheung

Examiner (ID: 9209, Phone: (571)270-7041 , Office: P/3668 )

Most Active Art Unit
3668
Art Unit(s)
3668, 3621, 3669, 3662, 3666
Total Applications
1158
Issued Applications
989
Pending Applications
66
Abandoned Applications
125

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2697639 [patent_doc_number] => 04990692 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-05 [patent_title] => 'Removal of cyclohexanol' [patent_app_type] => 1 [patent_app_number] => 7/383058 [patent_app_country] => US [patent_app_date] => 1989-07-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1322 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/990/04990692.pdf [firstpage_image] =>[orig_patent_app_number] => 383058 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/383058
Removal of cyclohexanol Jul 20, 1989 Issued
Array ( [id] => 2697568 [patent_doc_number] => 04990688 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-05 [patent_title] => 'Removal of cyclohexanol' [patent_app_type] => 1 [patent_app_number] => 7/383057 [patent_app_country] => US [patent_app_date] => 1989-07-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2497 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/990/04990688.pdf [firstpage_image] =>[orig_patent_app_number] => 383057 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/383057
Removal of cyclohexanol Jul 20, 1989 Issued
Array ( [id] => 2561082 [patent_doc_number] => 04960962 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-02 [patent_title] => 'Selective dehydrobromination' [patent_app_type] => 1 [patent_app_number] => 7/381829 [patent_app_country] => US [patent_app_date] => 1989-07-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1321 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/960/04960962.pdf [firstpage_image] =>[orig_patent_app_number] => 381829 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/381829
Selective dehydrobromination Jul 18, 1989 Issued
Array ( [id] => 2697493 [patent_doc_number] => 04990684 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-05 [patent_title] => 'Preparation of phenylacetaldehydes' [patent_app_type] => 1 [patent_app_number] => 7/378984 [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] => 5191 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/990/04990684.pdf [firstpage_image] =>[orig_patent_app_number] => 378984 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/378984
Preparation of phenylacetaldehydes Jul 11, 1989 Issued
07/373206 PROCESS FOR CATALYST-ALDEHYDE PRODUCT SEPARATION Jul 4, 1989 Abandoned
Array ( [id] => 2751535 [patent_doc_number] => 05030770 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-09 [patent_title] => 'Process for the preparation of thymol' [patent_app_type] => 1 [patent_app_number] => 7/375751 [patent_app_country] => US [patent_app_date] => 1989-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2430 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/030/05030770.pdf [firstpage_image] =>[orig_patent_app_number] => 375751 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/375751
Process for the preparation of thymol Jul 4, 1989 Issued
Array ( [id] => 2697886 [patent_doc_number] => 04990706 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-05 [patent_title] => 'Process for producing para-dichlorobenzene' [patent_app_type] => 1 [patent_app_number] => 7/373965 [patent_app_country] => US [patent_app_date] => 1989-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4997 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/990/04990706.pdf [firstpage_image] =>[orig_patent_app_number] => 373965 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/373965
Process for producing para-dichlorobenzene Jun 29, 1989 Issued
Array ( [id] => 2640063 [patent_doc_number] => 04914247 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-03 [patent_title] => 'Process for preparing para-substituted halogenobenzene derivatives' [patent_app_type] => 1 [patent_app_number] => 7/374578 [patent_app_country] => US [patent_app_date] => 1989-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 5653 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/914/04914247.pdf [firstpage_image] =>[orig_patent_app_number] => 374578 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/374578
Process for preparing para-substituted halogenobenzene derivatives Jun 29, 1989 Issued
Array ( [id] => 2682802 [patent_doc_number] => 05004844 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-04-02 [patent_title] => 'Process for the reduction of carbonyl compounds' [patent_app_type] => 1 [patent_app_number] => 7/372577 [patent_app_country] => US [patent_app_date] => 1989-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2535 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/004/05004844.pdf [firstpage_image] =>[orig_patent_app_number] => 372577 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/372577
Process for the reduction of carbonyl compounds Jun 27, 1989 Issued
07/372251 PROCESS FOR THE PURIFICATION OF DIHYDROXYBIPHENYLS Jun 26, 1989 Abandoned
Array ( [id] => 2697512 [patent_doc_number] => 04990685 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-05 [patent_title] => 'Process for the preparation of aqueous formaldehyde solutions' [patent_app_type] => 1 [patent_app_number] => 7/371786 [patent_app_country] => US [patent_app_date] => 1989-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2940 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/990/04990685.pdf [firstpage_image] =>[orig_patent_app_number] => 371786 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/371786
Process for the preparation of aqueous formaldehyde solutions Jun 26, 1989 Issued
07/371030 PROCESS FOR BROMINATION OF BIPHENYL WITH BRCL Jun 25, 1989 Abandoned
Array ( [id] => 2748471 [patent_doc_number] => 04987269 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-22 [patent_title] => 'Flame-proof polycarbonates containing units deriving from halogenated macrocyclic compounds' [patent_app_type] => 1 [patent_app_number] => 7/371513 [patent_app_country] => US [patent_app_date] => 1989-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4174 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 43 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/987/04987269.pdf [firstpage_image] =>[orig_patent_app_number] => 371513 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/371513
Flame-proof polycarbonates containing units deriving from halogenated macrocyclic compounds Jun 25, 1989 Issued
Array ( [id] => 2661294 [patent_doc_number] => 04978803 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-12-18 [patent_title] => 'Vapor phase oxidation process for making glyoxal' [patent_app_type] => 1 [patent_app_number] => 7/373843 [patent_app_country] => US [patent_app_date] => 1989-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2773 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/978/04978803.pdf [firstpage_image] =>[orig_patent_app_number] => 373843 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/373843
Vapor phase oxidation process for making glyoxal Jun 25, 1989 Issued
Array ( [id] => 2708998 [patent_doc_number] => 05001274 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-03-19 [patent_title] => 'Hydroformylation process' [patent_app_type] => 1 [patent_app_number] => 7/370806 [patent_app_country] => US [patent_app_date] => 1989-06-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 8666 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/001/05001274.pdf [firstpage_image] =>[orig_patent_app_number] => 370806 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/370806
Hydroformylation process Jun 22, 1989 Issued
Array ( [id] => 2712902 [patent_doc_number] => 05041692 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-08-20 [patent_title] => 'Process for alkylation of phenols' [patent_app_type] => 1 [patent_app_number] => 7/369248 [patent_app_country] => US [patent_app_date] => 1989-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2218 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/041/05041692.pdf [firstpage_image] =>[orig_patent_app_number] => 369248 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/369248
Process for alkylation of phenols Jun 20, 1989 Issued
Array ( [id] => 2697585 [patent_doc_number] => 04990689 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-05 [patent_title] => '2,4-bis(2-hydroxyhexafluoro-2-propyl)fluorobenzene and method of preparing same' [patent_app_type] => 1 [patent_app_number] => 7/368585 [patent_app_country] => US [patent_app_date] => 1989-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1085 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 14 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/990/04990689.pdf [firstpage_image] =>[orig_patent_app_number] => 368585 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/368585
2,4-bis(2-hydroxyhexafluoro-2-propyl)fluorobenzene and method of preparing same Jun 19, 1989 Issued
07/367548 PROCESS FOR THE SYNTHESIS OF AROMATIC PHENYL SUBSTITUTED DIOLS Jun 15, 1989 Abandoned
Array ( [id] => 2719250 [patent_doc_number] => 05008471 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-04-16 [patent_title] => 'Process for the preparation of rooperol' [patent_app_type] => 1 [patent_app_number] => 7/365751 [patent_app_country] => US [patent_app_date] => 1989-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2264 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/008/05008471.pdf [firstpage_image] =>[orig_patent_app_number] => 365751 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/365751
Process for the preparation of rooperol Jun 12, 1989 Issued
Array ( [id] => 2627448 [patent_doc_number] => 04956502 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-09-11 [patent_title] => 'Process for the preparation of rooperol derivative' [patent_app_type] => 1 [patent_app_number] => 7/365494 [patent_app_country] => US [patent_app_date] => 1989-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2163 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/956/04956502.pdf [firstpage_image] =>[orig_patent_app_number] => 365494 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/365494
Process for the preparation of rooperol derivative Jun 12, 1989 Issued
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