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] => 2586766 [patent_doc_number] => 04908349 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-13 [patent_title] => 'Bicyclic aldehydes and fragrance compositions containing same' [patent_app_type] => 1 [patent_app_number] => 7/219018 [patent_app_country] => US [patent_app_date] => 1988-07-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2054 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 37 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/908/04908349.pdf [firstpage_image] =>[orig_patent_app_number] => 219018 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/219018
Bicyclic aldehydes and fragrance compositions containing same Jul 13, 1988 Issued
Array ( [id] => 2544894 [patent_doc_number] => 04827057 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-05-02 [patent_title] => 'Process for preparing 1,2-dichlorobenzene' [patent_app_type] => 1 [patent_app_number] => 7/219109 [patent_app_country] => US [patent_app_date] => 1988-07-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1860 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/827/04827057.pdf [firstpage_image] =>[orig_patent_app_number] => 219109 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/219109
Process for preparing 1,2-dichlorobenzene Jul 13, 1988 Issued
Array ( [id] => 2470542 [patent_doc_number] => 04845306 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-04 [patent_title] => 'Catalyst material recovery or concentration process' [patent_app_type] => 1 [patent_app_number] => 7/218017 [patent_app_country] => US [patent_app_date] => 1988-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6275 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 275 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/845/04845306.pdf [firstpage_image] =>[orig_patent_app_number] => 218017 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/218017
Catalyst material recovery or concentration process Jul 11, 1988 Issued
Array ( [id] => 2523936 [patent_doc_number] => 04885407 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-05 [patent_title] => 'Method for recovering a dihydric phenol from a scrap polyester' [patent_app_type] => 1 [patent_app_number] => 7/217026 [patent_app_country] => US [patent_app_date] => 1988-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3876 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/885/04885407.pdf [firstpage_image] =>[orig_patent_app_number] => 217026 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/217026
Method for recovering a dihydric phenol from a scrap polyester Jul 10, 1988 Issued
Array ( [id] => 2481479 [patent_doc_number] => 04876395 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-24 [patent_title] => 'Process for color stabilization of bisphenol-A' [patent_app_type] => 1 [patent_app_number] => 7/217722 [patent_app_country] => US [patent_app_date] => 1988-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1669 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 28 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/876/04876395.pdf [firstpage_image] =>[orig_patent_app_number] => 217722 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/217722
Process for color stabilization of bisphenol-A Jul 10, 1988 Issued
Array ( [id] => 2611131 [patent_doc_number] => 04902836 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-20 [patent_title] => 'Process for inhibiting dihydric phenol degradation and color formation and composition thereof' [patent_app_type] => 1 [patent_app_number] => 7/217025 [patent_app_country] => US [patent_app_date] => 1988-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1762 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/902/04902836.pdf [firstpage_image] =>[orig_patent_app_number] => 217025 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/217025
Process for inhibiting dihydric phenol degradation and color formation and composition thereof Jul 10, 1988 Issued
Array ( [id] => 2523919 [patent_doc_number] => 04885406 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-05 [patent_title] => 'Hydrocarbon-soluble complexes of magnesium alkoxides with magnesium aryl oxides' [patent_app_type] => 1 [patent_app_number] => 7/215121 [patent_app_country] => US [patent_app_date] => 1988-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1323 [patent_no_of_claims] => 4 [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/04/885/04885406.pdf [firstpage_image] =>[orig_patent_app_number] => 215121 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/215121
Hydrocarbon-soluble complexes of magnesium alkoxides with magnesium aryl oxides Jul 4, 1988 Issued
Array ( [id] => 2481563 [patent_doc_number] => 04876400 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-24 [patent_title] => 'Process for producing vitamin A or its carboxylic acid esters, and itermediate compounds useful for the process' [patent_app_type] => 1 [patent_app_number] => 7/215167 [patent_app_country] => US [patent_app_date] => 1988-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10545 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/876/04876400.pdf [firstpage_image] =>[orig_patent_app_number] => 215167 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/215167
Process for producing vitamin A or its carboxylic acid esters, and itermediate compounds useful for the process Jul 4, 1988 Issued
Array ( [id] => 2478280 [patent_doc_number] => 04889957 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-26 [patent_title] => 'Dinuclear and water-soluble rhodium complexes and hydroformylation catalysis therewith' [patent_app_type] => 1 [patent_app_number] => 7/213149 [patent_app_country] => US [patent_app_date] => 1988-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5524 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/889/04889957.pdf [firstpage_image] =>[orig_patent_app_number] => 213149 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/213149
Dinuclear and water-soluble rhodium complexes and hydroformylation catalysis therewith Jun 28, 1988 Issued
Array ( [id] => 2621181 [patent_doc_number] => 04968832 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-11-06 [patent_title] => 'Novel asymmetric diesters of 1,4-dihydro-2,-dimethyl-pyridine-3,5-dicarboxylic acid' [patent_app_type] => 1 [patent_app_number] => 7/212472 [patent_app_country] => US [patent_app_date] => 1988-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5272 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 20 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/968/04968832.pdf [firstpage_image] =>[orig_patent_app_number] => 212472 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/212472
Novel asymmetric diesters of 1,4-dihydro-2,-dimethyl-pyridine-3,5-dicarboxylic acid Jun 27, 1988 Issued
07/211617 METHOD FOR ISOMERIZING 1,2-DICHLOROETHENE Jun 26, 1988 Abandoned
Array ( [id] => 2477808 [patent_doc_number] => 04879422 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-07 [patent_title] => 'Method for producing cycloalkanol' [patent_app_type] => 1 [patent_app_number] => 7/211881 [patent_app_country] => US [patent_app_date] => 1988-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2430 [patent_no_of_claims] => 11 [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/04/879/04879422.pdf [firstpage_image] =>[orig_patent_app_number] => 211881 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/211881
Method for producing cycloalkanol Jun 26, 1988 Issued
Array ( [id] => 2520032 [patent_doc_number] => 04870215 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-09-26 [patent_title] => 'Phenol alkylation process' [patent_app_type] => 1 [patent_app_number] => 7/211295 [patent_app_country] => US [patent_app_date] => 1988-06-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2271 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/870/04870215.pdf [firstpage_image] =>[orig_patent_app_number] => 211295 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/211295
Phenol alkylation process Jun 23, 1988 Issued
Array ( [id] => 2520051 [patent_doc_number] => 04870216 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-09-26 [patent_title] => 'Phenol alkylation process' [patent_app_type] => 1 [patent_app_number] => 7/211273 [patent_app_country] => US [patent_app_date] => 1988-06-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3382 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/870/04870216.pdf [firstpage_image] =>[orig_patent_app_number] => 211273 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/211273
Phenol alkylation process Jun 23, 1988 Issued
Array ( [id] => 2515581 [patent_doc_number] => 04851588 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-25 [patent_title] => 'Novel process for the preparation of bronopol' [patent_app_type] => 1 [patent_app_number] => 7/210675 [patent_app_country] => US [patent_app_date] => 1988-06-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3357 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/851/04851588.pdf [firstpage_image] =>[orig_patent_app_number] => 210675 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/210675
Novel process for the preparation of bronopol Jun 22, 1988 Issued
Array ( [id] => 2527404 [patent_doc_number] => 04873376 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-10 [patent_title] => 'Process for the production of monomeric alkenylphenols from dihydroxydiphenylalkanes' [patent_app_type] => 1 [patent_app_number] => 7/209200 [patent_app_country] => US [patent_app_date] => 1988-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 392 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 169 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/873/04873376.pdf [firstpage_image] =>[orig_patent_app_number] => 209200 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/209200
Process for the production of monomeric alkenylphenols from dihydroxydiphenylalkanes Jun 19, 1988 Issued
Array ( [id] => 2588570 [patent_doc_number] => 04891455 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-01-02 [patent_title] => 'Process for preparing monohalogenated cyclobutarenes' [patent_app_type] => 1 [patent_app_number] => 7/207802 [patent_app_country] => US [patent_app_date] => 1988-06-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3720 [patent_no_of_claims] => 34 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/891/04891455.pdf [firstpage_image] =>[orig_patent_app_number] => 207802 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/207802
Process for preparing monohalogenated cyclobutarenes Jun 16, 1988 Issued
Array ( [id] => 2520124 [patent_doc_number] => 04870220 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-09-26 [patent_title] => 'Process for manufacturing methallyl chloride' [patent_app_type] => 1 [patent_app_number] => 7/206801 [patent_app_country] => US [patent_app_date] => 1988-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2304 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/870/04870220.pdf [firstpage_image] =>[orig_patent_app_number] => 206801 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/206801
Process for manufacturing methallyl chloride Jun 14, 1988 Issued
Array ( [id] => 2611150 [patent_doc_number] => 04902837 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-20 [patent_title] => 'Process for preparing Biphenols' [patent_app_type] => 1 [patent_app_number] => 7/219151 [patent_app_country] => US [patent_app_date] => 1988-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 4608 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 29 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/902/04902837.pdf [firstpage_image] =>[orig_patent_app_number] => 219151 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/219151
Process for preparing Biphenols Jun 12, 1988 Issued
Array ( [id] => 2496983 [patent_doc_number] => 04847435 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-07-11 [patent_title] => 'Process for the recovery of high-purity m-ethylphenol' [patent_app_type] => 1 [patent_app_number] => 7/206227 [patent_app_country] => US [patent_app_date] => 1988-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5714 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/847/04847435.pdf [firstpage_image] =>[orig_patent_app_number] => 206227 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/206227
Process for the recovery of high-purity m-ethylphenol Jun 12, 1988 Issued
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