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] => 4293874 [patent_doc_number] => 06235859 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-05-22 [patent_title] => 'Production process for polyvinyl ether and catalyst used for the process' [patent_app_type] => 1 [patent_app_number] => 9/323156 [patent_app_country] => US [patent_app_date] => 1999-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3234 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 27 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/235/06235859.pdf [firstpage_image] =>[orig_patent_app_number] => 323156 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/323156
Production process for polyvinyl ether and catalyst used for the process May 31, 1999 Issued
Array ( [id] => 1582114 [patent_doc_number] => 06423800 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-07-23 [patent_title] => 'Pelletized polyolefin having ultra-high melt flow and its articles of manufacture' [patent_app_type] => B1 [patent_app_number] => 09/320380 [patent_app_country] => US [patent_app_date] => 1999-05-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6823 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/423/06423800.pdf [firstpage_image] =>[orig_patent_app_number] => 09320380 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/320380
Pelletized polyolefin having ultra-high melt flow and its articles of manufacture May 25, 1999 Issued
Array ( [id] => 4290348 [patent_doc_number] => 06211311 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-04-03 [patent_title] => 'Supported olefin polymerization catalysts' [patent_app_type] => 1 [patent_app_number] => 9/318008 [patent_app_country] => US [patent_app_date] => 1999-05-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6566 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/211/06211311.pdf [firstpage_image] =>[orig_patent_app_number] => 318008 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/318008
Supported olefin polymerization catalysts May 24, 1999 Issued
Array ( [id] => 1582121 [patent_doc_number] => 06423802 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-07-23 [patent_title] => 'Water soluble copolymers and polymer compositions comprising same and use thereof' [patent_app_type] => B1 [patent_app_number] => 09/316527 [patent_app_country] => US [patent_app_date] => 1999-05-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3287 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 50 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/423/06423802.pdf [firstpage_image] =>[orig_patent_app_number] => 09316527 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/316527
Water soluble copolymers and polymer compositions comprising same and use thereof May 20, 1999 Issued
Array ( [id] => 4398249 [patent_doc_number] => 06297333 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-02 [patent_title] => 'Olefin polymerization catalyst, process for preparing olefin polymer, and olefin polymer' [patent_app_type] => 1 [patent_app_number] => 9/315268 [patent_app_country] => US [patent_app_date] => 1999-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 34803 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 648 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/297/06297333.pdf [firstpage_image] =>[orig_patent_app_number] => 315268 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/315268
Olefin polymerization catalyst, process for preparing olefin polymer, and olefin polymer May 19, 1999 Issued
Array ( [id] => 1567538 [patent_doc_number] => 06376628 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-04-23 [patent_title] => 'Process for polymerization of alpha-olefin and alpha-olefin polymer' [patent_app_type] => B1 [patent_app_number] => 09/314386 [patent_app_country] => US [patent_app_date] => 1999-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 12293 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/376/06376628.pdf [firstpage_image] =>[orig_patent_app_number] => 09314386 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/314386
Process for polymerization of alpha-olefin and alpha-olefin polymer May 18, 1999 Issued
Array ( [id] => 4407725 [patent_doc_number] => 06271325 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-08-07 [patent_title] => 'Method of polymerization' [patent_app_type] => 1 [patent_app_number] => 9/312878 [patent_app_country] => US [patent_app_date] => 1999-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8096 [patent_no_of_claims] => 38 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/271/06271325.pdf [firstpage_image] =>[orig_patent_app_number] => 312878 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/312878
Method of polymerization May 16, 1999 Issued
Array ( [id] => 4239844 [patent_doc_number] => 06166154 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-12-26 [patent_title] => 'Olefin polymerization catalyst composition having increased activity' [patent_app_type] => 1 [patent_app_number] => 9/312086 [patent_app_country] => US [patent_app_date] => 1999-05-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7366 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/166/06166154.pdf [firstpage_image] =>[orig_patent_app_number] => 312086 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/312086
Olefin polymerization catalyst composition having increased activity May 14, 1999 Issued
Array ( [id] => 4355071 [patent_doc_number] => 06291603 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-09-18 [patent_title] => 'Filtration and flow distribution method for chemical reactors using reticulated ceramics with uniform pore distributions' [patent_app_type] => 1 [patent_app_number] => 9/307506 [patent_app_country] => US [patent_app_date] => 1999-05-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 13 [patent_no_of_words] => 7066 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/291/06291603.pdf [firstpage_image] =>[orig_patent_app_number] => 307506 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/307506
Filtration and flow distribution method for chemical reactors using reticulated ceramics with uniform pore distributions May 6, 1999 Issued
Array ( [id] => 4358011 [patent_doc_number] => 06201081 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-03-13 [patent_title] => 'Catalyst efficiency for supported metallocene catalyst' [patent_app_type] => 1 [patent_app_number] => 9/305135 [patent_app_country] => US [patent_app_date] => 1999-05-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 5245 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 286 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/201/06201081.pdf [firstpage_image] =>[orig_patent_app_number] => 305135 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/305135
Catalyst efficiency for supported metallocene catalyst May 3, 1999 Issued
Array ( [id] => 4316102 [patent_doc_number] => 06242543 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-06-05 [patent_title] => 'Process for producing polyethylenes having a broad molecular weight distribution, and a catalyst system used thereby' [patent_app_type] => 1 [patent_app_number] => 9/117206 [patent_app_country] => US [patent_app_date] => 1999-05-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 7713 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 25 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/242/06242543.pdf [firstpage_image] =>[orig_patent_app_number] => 117206 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/117206
Process for producing polyethylenes having a broad molecular weight distribution, and a catalyst system used thereby May 2, 1999 Issued
Array ( [id] => 4347820 [patent_doc_number] => 06284850 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-09-04 [patent_title] => 'Polymerization of vinyl monomers' [patent_app_type] => 1 [patent_app_number] => 9/297472 [patent_app_country] => US [patent_app_date] => 1999-04-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3967 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/284/06284850.pdf [firstpage_image] =>[orig_patent_app_number] => 297472 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/297472
Polymerization of vinyl monomers Apr 28, 1999 Issued
Array ( [id] => 4086955 [patent_doc_number] => 06162884 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-12-19 [patent_title] => 'Olefin oligomerization and processes thereof' [patent_app_type] => 1 [patent_app_number] => 9/302133 [patent_app_country] => US [patent_app_date] => 1999-04-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5135 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/162/06162884.pdf [firstpage_image] =>[orig_patent_app_number] => 302133 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/302133
Olefin oligomerization and processes thereof Apr 28, 1999 Issued
Array ( [id] => 4337287 [patent_doc_number] => 06333292 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-12-25 [patent_title] => 'Catalysts for olefin polymerization' [patent_app_type] => 1 [patent_app_number] => 9/301074 [patent_app_country] => US [patent_app_date] => 1999-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9727 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/333/06333292.pdf [firstpage_image] =>[orig_patent_app_number] => 301074 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/301074
Catalysts for olefin polymerization Apr 27, 1999 Issued
Array ( [id] => 4411631 [patent_doc_number] => 06228958 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-05-08 [patent_title] => 'Azaborolinyl metal complexes as olefin polymerization catalysts' [patent_app_type] => 1 [patent_app_number] => 9/300370 [patent_app_country] => US [patent_app_date] => 1999-04-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3981 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/228/06228958.pdf [firstpage_image] =>[orig_patent_app_number] => 300370 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/300370
Azaborolinyl metal complexes as olefin polymerization catalysts Apr 26, 1999 Issued
Array ( [id] => 4410149 [patent_doc_number] => 06239237 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-05-29 [patent_title] => 'Group 8, 9 or 10 transition metal catalyst for olefin polymerization' [patent_app_type] => 1 [patent_app_number] => 9/296890 [patent_app_country] => US [patent_app_date] => 1999-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8013 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 300 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/239/06239237.pdf [firstpage_image] =>[orig_patent_app_number] => 296890 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/296890
Group 8, 9 or 10 transition metal catalyst for olefin polymerization Apr 21, 1999 Issued
Array ( [id] => 4354996 [patent_doc_number] => 06218330 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-04-17 [patent_title] => 'Process for preparing and using a supported metallocene-alumoxane catalyst' [patent_app_type] => 1 [patent_app_number] => 9/296034 [patent_app_country] => US [patent_app_date] => 1999-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3981 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 361 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/218/06218330.pdf [firstpage_image] =>[orig_patent_app_number] => 296034 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/296034
Process for preparing and using a supported metallocene-alumoxane catalyst Apr 20, 1999 Issued
Array ( [id] => 1542897 [patent_doc_number] => 06372684 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-04-16 [patent_title] => 'Catalyst system for -olefin oligomerization' [patent_app_type] => B1 [patent_app_number] => 09/292139 [patent_app_country] => US [patent_app_date] => 1999-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7507 [patent_no_of_claims] => 42 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 751 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/372/06372684.pdf [firstpage_image] =>[orig_patent_app_number] => 09292139 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/292139
Catalyst system for -olefin oligomerization Apr 14, 1999 Issued
Array ( [id] => 4289844 [patent_doc_number] => 06268452 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-07-31 [patent_title] => 'Process for the production of allylamine polymer' [patent_app_type] => 1 [patent_app_number] => 9/291029 [patent_app_country] => US [patent_app_date] => 1999-04-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 9543 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/268/06268452.pdf [firstpage_image] =>[orig_patent_app_number] => 291029 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/291029
Process for the production of allylamine polymer Apr 13, 1999 Issued
Array ( [id] => 706349 [patent_doc_number] => 07060172 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2006-06-13 [patent_title] => 'Electrophoresis gel and gel-forming apparatus' [patent_app_type] => utility [patent_app_number] => 09/647821 [patent_app_country] => US [patent_app_date] => 1999-04-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 4827 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 59 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/060/07060172.pdf [firstpage_image] =>[orig_patent_app_number] => 09647821 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/647821
Electrophoresis gel and gel-forming apparatus Apr 8, 1999 Issued
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