Search

Ling Siu Choi

Supervisory Patent Examiner (ID: 12436, Phone: (571)272-1098 , Office: P/1763 )

Most Active Art Unit
1713
Art Unit(s)
1762, 1713, 1763, 1714, 1796
Total Applications
1478
Issued Applications
1218
Pending Applications
36
Abandoned Applications
224

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 1546275 [patent_doc_number] => 06444764 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-09-03 [patent_title] => 'Supported catalyst system for polymerizing alk-1-enes' [patent_app_type] => B1 [patent_app_number] => 09/380712 [patent_app_country] => US [patent_app_date] => 1999-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5498 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 378 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/444/06444764.pdf [firstpage_image] =>[orig_patent_app_number] => 09380712 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/380712
Supported catalyst system for polymerizing alk-1-enes Sep 7, 1999 Issued
09/391662 MODIFIED ALUMINUM OXY COMPOUND, POLYMERIZATION CATALYST AND PROCESS FOR PRODUCING OLEFIN POLYMER AND ALKENYL AROMATIC HYDROCARBON POLYMER Sep 6, 1999 Abandoned
Array ( [id] => 1491096 [patent_doc_number] => 06417301 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-07-09 [patent_title] => 'Process for producing ethylene/olefin interpolymers' [patent_app_type] => B1 [patent_app_number] => 09/386545 [patent_app_country] => US [patent_app_date] => 1999-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14198 [patent_no_of_claims] => 31 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/417/06417301.pdf [firstpage_image] =>[orig_patent_app_number] => 09386545 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/386545
Process for producing ethylene/olefin interpolymers Aug 30, 1999 Issued
Array ( [id] => 4372769 [patent_doc_number] => 06288181 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-09-11 [patent_title] => 'Process for producing polyolefins' [patent_app_type] => 1 [patent_app_number] => 9/387600 [patent_app_country] => US [patent_app_date] => 1999-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6973 [patent_no_of_claims] => 36 [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/06/288/06288181.pdf [firstpage_image] =>[orig_patent_app_number] => 387600 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/387600
Process for producing polyolefins Aug 30, 1999 Issued
Array ( [id] => 4332777 [patent_doc_number] => 06313242 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-11-06 [patent_title] => 'Stereorigid bis-fluorenyl metallocenes' [patent_app_type] => 1 [patent_app_number] => 9/386261 [patent_app_country] => US [patent_app_date] => 1999-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7614 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 247 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/313/06313242.pdf [firstpage_image] =>[orig_patent_app_number] => 386261 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/386261
Stereorigid bis-fluorenyl metallocenes Aug 30, 1999 Issued
09/367780 METHOD AND CATALYST FOR PRODUCING POLYOLEFINS OF MEDIUM TO ULTRA-HIGH MOLECULAR WEIGHT Aug 18, 1999 Abandoned
Array ( [id] => 4423118 [patent_doc_number] => 06225432 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-05-01 [patent_title] => 'Branched polypropylene compositions' [patent_app_type] => 1 [patent_app_number] => 9/375774 [patent_app_country] => US [patent_app_date] => 1999-08-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 9768 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 45 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/225/06225432.pdf [firstpage_image] =>[orig_patent_app_number] => 375774 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/375774
Branched polypropylene compositions Aug 16, 1999 Issued
Array ( [id] => 1436103 [patent_doc_number] => 06355747 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-03-12 [patent_title] => 'Asymmetric silicon-bridged metallocenes useful as catalysts in the polymerization of -olefins, process for their preparation and use of said metallocenes for the polymerization of -olefins' [patent_app_type] => B1 [patent_app_number] => 09/376179 [patent_app_country] => US [patent_app_date] => 1999-08-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2965 [patent_no_of_claims] => 5 [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/06/355/06355747.pdf [firstpage_image] =>[orig_patent_app_number] => 09376179 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/376179
Asymmetric silicon-bridged metallocenes useful as catalysts in the polymerization of -olefins, process for their preparation and use of said metallocenes for the polymerization of -olefins Aug 16, 1999 Issued
Array ( [id] => 4355229 [patent_doc_number] => 06291614 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-09-18 [patent_title] => 'Dinuclear fluoroaryl aluminum alkyl complexes' [patent_app_type] => 1 [patent_app_number] => 9/371888 [patent_app_country] => US [patent_app_date] => 1999-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9960 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/291/06291614.pdf [firstpage_image] =>[orig_patent_app_number] => 371888 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/371888
Dinuclear fluoroaryl aluminum alkyl complexes Aug 8, 1999 Issued
Array ( [id] => 1178692 [patent_doc_number] => 06743877 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2004-06-01 [patent_title] => 'Electrode materials derived from polyquinonic ionic compounds and their use in electrochemical generators' [patent_app_type] => B1 [patent_app_number] => 09/361962 [patent_app_country] => US [patent_app_date] => 1999-07-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4560 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/743/06743877.pdf [firstpage_image] =>[orig_patent_app_number] => 09361962 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/361962
Electrode materials derived from polyquinonic ionic compounds and their use in electrochemical generators Jul 27, 1999 Issued
Array ( [id] => 1417896 [patent_doc_number] => 06512060 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2003-01-28 [patent_title] => 'Atom or group transfer radical polymerization' [patent_app_type] => B1 [patent_app_number] => 09/359591 [patent_app_country] => US [patent_app_date] => 1999-07-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 16 [patent_no_of_words] => 68332 [patent_no_of_claims] => 35 [patent_no_of_ind_claims] => 11 [patent_words_short_claim] => 103 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/512/06512060.pdf [firstpage_image] =>[orig_patent_app_number] => 09359591 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/359591
Atom or group transfer radical polymerization Jul 22, 1999 Issued
Array ( [id] => 4407698 [patent_doc_number] => 06271322 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-08-07 [patent_title] => 'Monocyclopentadienyl transition metal catalyst and olefin polymerization process' [patent_app_type] => 1 [patent_app_number] => 9/357305 [patent_app_country] => US [patent_app_date] => 1999-07-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4631 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 268 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/271/06271322.pdf [firstpage_image] =>[orig_patent_app_number] => 357305 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/357305
Monocyclopentadienyl transition metal catalyst and olefin polymerization process Jul 19, 1999 Issued
Array ( [id] => 4262524 [patent_doc_number] => 06258912 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-07-10 [patent_title] => 'Polyolefin' [patent_app_type] => 1 [patent_app_number] => 9/353653 [patent_app_country] => US [patent_app_date] => 1999-07-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 6388 [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/06/258/06258912.pdf [firstpage_image] =>[orig_patent_app_number] => 353653 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/353653
Polyolefin Jul 14, 1999 Issued
Array ( [id] => 4359366 [patent_doc_number] => 06255247 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-07-03 [patent_title] => 'Optimum external co-catalyst electron donor molar ratio in propylene polymerization' [patent_app_type] => 1 [patent_app_number] => 9/351385 [patent_app_country] => US [patent_app_date] => 1999-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3469 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/255/06255247.pdf [firstpage_image] =>[orig_patent_app_number] => 351385 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/351385
Optimum external co-catalyst electron donor molar ratio in propylene polymerization Jul 12, 1999 Issued
Array ( [id] => 1586830 [patent_doc_number] => 06359086 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-03-19 [patent_title] => 'Non self-igniting solid' [patent_app_type] => B1 [patent_app_number] => 09/341517 [patent_app_country] => US [patent_app_date] => 1999-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5066 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/359/06359086.pdf [firstpage_image] =>[orig_patent_app_number] => 09341517 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/341517
Non self-igniting solid Jul 12, 1999 Issued
Array ( [id] => 4271100 [patent_doc_number] => 06306985 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-23 [patent_title] => 'High activity solid catalyst for producing low-, medium-, and high-density polyethylenes by slurry phase polymerization, process for preparing the same and use of the same in ethylene polymerization' [patent_app_type] => 1 [patent_app_number] => 9/352873 [patent_app_country] => US [patent_app_date] => 1999-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 5413 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/306/06306985.pdf [firstpage_image] =>[orig_patent_app_number] => 352873 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/352873
High activity solid catalyst for producing low-, medium-, and high-density polyethylenes by slurry phase polymerization, process for preparing the same and use of the same in ethylene polymerization Jul 12, 1999 Issued
Array ( [id] => 4381777 [patent_doc_number] => 06303716 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-16 [patent_title] => 'High-activity catalyst for producing low-, medium- and high density polyethylenes by gas phase polymerization, process for preparing the same and use of the same in ethylene polymerization' [patent_app_type] => 1 [patent_app_number] => 9/353046 [patent_app_country] => US [patent_app_date] => 1999-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4329 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/303/06303716.pdf [firstpage_image] =>[orig_patent_app_number] => 353046 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/353046
High-activity catalyst for producing low-, medium- and high density polyethylenes by gas phase polymerization, process for preparing the same and use of the same in ethylene polymerization Jul 12, 1999 Issued
Array ( [id] => 1565704 [patent_doc_number] => 06339136 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-01-15 [patent_title] => 'Process for making propylene homo or copolymers' [patent_app_type] => B1 [patent_app_number] => 09/308040 [patent_app_country] => US [patent_app_date] => 1999-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4710 [patent_no_of_claims] => 19 [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/06/339/06339136.pdf [firstpage_image] =>[orig_patent_app_number] => 09308040 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/308040
Process for making propylene homo or copolymers Jul 12, 1999 Issued
Array ( [id] => 4134389 [patent_doc_number] => 06147167 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-11-14 [patent_title] => 'Process for producing polyethylene film composition having broad molecular weight distribution and improved bubble stability' [patent_app_type] => 1 [patent_app_number] => 9/337460 [patent_app_country] => US [patent_app_date] => 1999-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4257 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/147/06147167.pdf [firstpage_image] =>[orig_patent_app_number] => 337460 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/337460
Process for producing polyethylene film composition having broad molecular weight distribution and improved bubble stability Jun 20, 1999 Issued
Array ( [id] => 4410163 [patent_doc_number] => 06239238 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-05-29 [patent_title] => 'Bis-phosphinimine catalyst' [patent_app_type] => 1 [patent_app_number] => 9/333750 [patent_app_country] => US [patent_app_date] => 1999-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6828 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 251 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/239/06239238.pdf [firstpage_image] =>[orig_patent_app_number] => 333750 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/333750
Bis-phosphinimine catalyst Jun 14, 1999 Issued
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