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] => 2675079 [patent_doc_number] => 05026926 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-06-25 [patent_title] => 'Chlorination of ortho-chlorophenol' [patent_app_type] => 1 [patent_app_number] => 7/164966 [patent_app_country] => US [patent_app_date] => 1988-03-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4627 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/026/05026926.pdf [firstpage_image] =>[orig_patent_app_number] => 164966 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/164966
Chlorination of ortho-chlorophenol Mar 6, 1988 Issued
Array ( [id] => 2520006 [patent_doc_number] => 04855513 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-08 [patent_title] => 'Chlorination of phenolic compounds' [patent_app_type] => 1 [patent_app_number] => 7/165007 [patent_app_country] => US [patent_app_date] => 1988-03-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3434 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 109 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/855/04855513.pdf [firstpage_image] =>[orig_patent_app_number] => 165007 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/165007
Chlorination of phenolic compounds Mar 6, 1988 Issued
Array ( [id] => 2544874 [patent_doc_number] => 04827056 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-05-02 [patent_title] => 'Process for preparing chlorinated olefins' [patent_app_type] => 1 [patent_app_number] => 7/164917 [patent_app_country] => US [patent_app_date] => 1988-03-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2692 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/827/04827056.pdf [firstpage_image] =>[orig_patent_app_number] => 164917 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/164917
Process for preparing chlorinated olefins Mar 6, 1988 Issued
Array ( [id] => 2496761 [patent_doc_number] => 04847423 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-11 [patent_title] => 'Hydroformylation of aqueous formaldehyde using a rhodium-tricyclohexylphosphine catalyst system' [patent_app_type] => 1 [patent_app_number] => 7/163450 [patent_app_country] => US [patent_app_date] => 1988-03-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4892 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/847/04847423.pdf [firstpage_image] =>[orig_patent_app_number] => 163450 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/163450
Hydroformylation of aqueous formaldehyde using a rhodium-tricyclohexylphosphine catalyst system Mar 2, 1988 Issued
Array ( [id] => 2496779 [patent_doc_number] => 04847424 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-11 [patent_title] => 'Method of producing aldehyde compound' [patent_app_type] => 1 [patent_app_number] => 7/160156 [patent_app_country] => US [patent_app_date] => 1988-02-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2925 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/847/04847424.pdf [firstpage_image] =>[orig_patent_app_number] => 160156 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/160156
Method of producing aldehyde compound Feb 24, 1988 Issued
Array ( [id] => 2526052 [patent_doc_number] => 04877909 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-31 [patent_title] => 'Process for reducing aldehydes or ketones' [patent_app_type] => 1 [patent_app_number] => 7/126106 [patent_app_country] => US [patent_app_date] => 1988-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2250 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/877/04877909.pdf [firstpage_image] =>[orig_patent_app_number] => 126106 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/126106
Process for reducing aldehydes or ketones Feb 21, 1988 Issued
Array ( [id] => 2554096 [patent_doc_number] => 04803195 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-02-07 [patent_title] => 'Perfume composition with deodorising or antiperspirant action' [patent_app_type] => 1 [patent_app_number] => 7/157422 [patent_app_country] => US [patent_app_date] => 1988-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4155 [patent_no_of_claims] => 6 [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/04/803/04803195.pdf [firstpage_image] =>[orig_patent_app_number] => 157422 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/157422
Perfume composition with deodorising or antiperspirant action Feb 16, 1988 Issued
Array ( [id] => 2588509 [patent_doc_number] => 04891452 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-01-02 [patent_title] => 'Process for the preparation of hydroxybiphenyls' [patent_app_type] => 1 [patent_app_number] => 7/154194 [patent_app_country] => US [patent_app_date] => 1988-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2737 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 181 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/891/04891452.pdf [firstpage_image] =>[orig_patent_app_number] => 154194 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/154194
Process for the preparation of hydroxybiphenyls Feb 9, 1988 Issued
Array ( [id] => 2490983 [patent_doc_number] => 04824827 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-04-25 [patent_title] => 'Time-color indicators' [patent_app_type] => 1 [patent_app_number] => 7/152733 [patent_app_country] => US [patent_app_date] => 1988-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6609 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/824/04824827.pdf [firstpage_image] =>[orig_patent_app_number] => 152733 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/152733
Time-color indicators Feb 4, 1988 Issued
Array ( [id] => 2563288 [patent_doc_number] => 04837368 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-06-06 [patent_title] => 'Low pressure catalytic hydrogenation of carbonyl-containing compounds and supported catalysts therefor' [patent_app_type] => 1 [patent_app_number] => 7/150791 [patent_app_country] => US [patent_app_date] => 1988-02-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4122 [patent_no_of_claims] => 33 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 287 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/837/04837368.pdf [firstpage_image] =>[orig_patent_app_number] => 150791 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/150791
Low pressure catalytic hydrogenation of carbonyl-containing compounds and supported catalysts therefor Jan 31, 1988 Issued
Array ( [id] => 2527528 [patent_doc_number] => 04873383 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-10 [patent_title] => 'Method for selective isolation of Dichlorobenzene' [patent_app_type] => 1 [patent_app_number] => 7/150400 [patent_app_country] => US [patent_app_date] => 1988-01-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 4664 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/873/04873383.pdf [firstpage_image] =>[orig_patent_app_number] => 150400 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/150400
Method for selective isolation of Dichlorobenzene Jan 28, 1988 Issued
Array ( [id] => 2544629 [patent_doc_number] => 04827043 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-05-02 [patent_title] => 'Impurity removal from carbon monoxide and/or hydrogen-containing streams' [patent_app_type] => 1 [patent_app_number] => 7/146756 [patent_app_country] => US [patent_app_date] => 1988-01-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2437 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/827/04827043.pdf [firstpage_image] =>[orig_patent_app_number] => 146756 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/146756
Impurity removal from carbon monoxide and/or hydrogen-containing streams Jan 21, 1988 Issued
Array ( [id] => 2496966 [patent_doc_number] => 04847434 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-11 [patent_title] => 'Biphenol process' [patent_app_type] => 1 [patent_app_number] => 7/146428 [patent_app_country] => US [patent_app_date] => 1988-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1859 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 41 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/847/04847434.pdf [firstpage_image] =>[orig_patent_app_number] => 146428 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/146428
Biphenol process Jan 20, 1988 Issued
Array ( [id] => 2560410 [patent_doc_number] => 04853487 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-01 [patent_title] => 'Process for the preparation of hydroxybiphenyls' [patent_app_type] => 1 [patent_app_number] => 7/146108 [patent_app_country] => US [patent_app_date] => 1988-01-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2360 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 177 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/853/04853487.pdf [firstpage_image] =>[orig_patent_app_number] => 146108 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/146108
Process for the preparation of hydroxybiphenyls Jan 19, 1988 Issued
Array ( [id] => 2445768 [patent_doc_number] => 04778934 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-10-18 [patent_title] => 'Process for the manufacture of p-tert-butyl-.alpha.-methylhydrocinnamaldehyde' [patent_app_type] => 1 [patent_app_number] => 7/145437 [patent_app_country] => US [patent_app_date] => 1988-01-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1499 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 7 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/778/04778934.pdf [firstpage_image] =>[orig_patent_app_number] => 145437 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/145437
Process for the manufacture of p-tert-butyl-.alpha.-methylhydrocinnamaldehyde Jan 18, 1988 Issued
Array ( [id] => 2564551 [patent_doc_number] => 04857665 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-15 [patent_title] => 'Process for working up the filtration residue of crude sodium prepared by fusion electrolysis into a high-purity sodium alcholate' [patent_app_type] => 1 [patent_app_number] => 7/144346 [patent_app_country] => US [patent_app_date] => 1988-01-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3078 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/857/04857665.pdf [firstpage_image] =>[orig_patent_app_number] => 144346 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/144346
Process for working up the filtration residue of crude sodium prepared by fusion electrolysis into a high-purity sodium alcholate Jan 14, 1988 Issued
Array ( [id] => 2488679 [patent_doc_number] => 04820882 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-04-11 [patent_title] => 'Preparation of beta-aryl alcohols' [patent_app_type] => 1 [patent_app_number] => 7/144169 [patent_app_country] => US [patent_app_date] => 1988-01-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2821 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/820/04820882.pdf [firstpage_image] =>[orig_patent_app_number] => 144169 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/144169
Preparation of beta-aryl alcohols Jan 14, 1988 Issued
Array ( [id] => 2505765 [patent_doc_number] => 04798913 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-01-17 [patent_title] => 'Method for separating a trihalogenobenzene isomer' [patent_app_type] => 1 [patent_app_number] => 7/140991 [patent_app_country] => US [patent_app_date] => 1988-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3202 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/798/04798913.pdf [firstpage_image] =>[orig_patent_app_number] => 140991 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/140991
Method for separating a trihalogenobenzene isomer Jan 4, 1988 Issued
Array ( [id] => 2515484 [patent_doc_number] => 04851583 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-25 [patent_title] => 'Method of generating acrolein' [patent_app_type] => 1 [patent_app_number] => 7/140450 [patent_app_country] => US [patent_app_date] => 1988-01-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2666 [patent_no_of_claims] => 9 [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/04/851/04851583.pdf [firstpage_image] =>[orig_patent_app_number] => 140450 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/140450
Method of generating acrolein Jan 3, 1988 Issued
Array ( [id] => 2496926 [patent_doc_number] => 04847432 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-11 [patent_title] => 'Method for the purification of ion exchange resins used in the production of bisphenol A' [patent_app_type] => 1 [patent_app_number] => 7/137983 [patent_app_country] => US [patent_app_date] => 1987-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2950 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/847/04847432.pdf [firstpage_image] =>[orig_patent_app_number] => 137983 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/137983
Method for the purification of ion exchange resins used in the production of bisphenol A Dec 27, 1987 Issued
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