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] => 1459334 [patent_doc_number] => 06426394 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-07-30 [patent_title] => 'Method of polymerizing olefins using unsupported catalyst compositions' [patent_app_type] => B1 [patent_app_number] => 09/458334 [patent_app_country] => US [patent_app_date] => 1999-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8657 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/426/06426394.pdf [firstpage_image] =>[orig_patent_app_number] => 09458334 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/458334
Method of polymerizing olefins using unsupported catalyst compositions Dec 9, 1999 Issued
Array ( [id] => 4330262 [patent_doc_number] => 06320005 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-11-20 [patent_title] => 'Catalyst for the production of olefin polymers' [patent_app_type] => 1 [patent_app_number] => 9/456853 [patent_app_country] => US [patent_app_date] => 1999-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9324 [patent_no_of_claims] => 31 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 31 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/320/06320005.pdf [firstpage_image] =>[orig_patent_app_number] => 456853 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/456853
Catalyst for the production of olefin polymers Dec 7, 1999 Issued
Array ( [id] => 4381766 [patent_doc_number] => 06303715 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-16 [patent_title] => 'Method for polymerization and copolymerization of alpha-olefin' [patent_app_type] => 1 [patent_app_number] => 9/455249 [patent_app_country] => US [patent_app_date] => 1999-12-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6230 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/303/06303715.pdf [firstpage_image] =>[orig_patent_app_number] => 455249 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/455249
Method for polymerization and copolymerization of alpha-olefin Dec 5, 1999 Issued
Array ( [id] => 1533639 [patent_doc_number] => 06410665 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-06-25 [patent_title] => 'Chemical compound' [patent_app_type] => B1 [patent_app_number] => 09/456037 [patent_app_country] => US [patent_app_date] => 1999-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8410 [patent_no_of_claims] => 11 [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/06/410/06410665.pdf [firstpage_image] =>[orig_patent_app_number] => 09456037 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/456037
Chemical compound Dec 2, 1999 Issued
Array ( [id] => 1551513 [patent_doc_number] => 06399722 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-06-04 [patent_title] => 'Solution feed of multiple catalysts' [patent_app_type] => B1 [patent_app_number] => 09/451792 [patent_app_country] => US [patent_app_date] => 1999-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 16764 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/399/06399722.pdf [firstpage_image] =>[orig_patent_app_number] => 09451792 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/451792
Solution feed of multiple catalysts Nov 30, 1999 Issued
Array ( [id] => 1586832 [patent_doc_number] => 06359087 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-03-19 [patent_title] => 'Gas phase anionic polymerization of diene elastomers' [patent_app_type] => B1 [patent_app_number] => 09/448841 [patent_app_country] => US [patent_app_date] => 1999-11-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 11055 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 186 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/359/06359087.pdf [firstpage_image] =>[orig_patent_app_number] => 09448841 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/448841
Gas phase anionic polymerization of diene elastomers Nov 22, 1999 Issued
Array ( [id] => 4271270 [patent_doc_number] => 06306995 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-23 [patent_title] => 'Polymerization process' [patent_app_type] => 1 [patent_app_number] => 9/443645 [patent_app_country] => US [patent_app_date] => 1999-11-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6503 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/306/06306995.pdf [firstpage_image] =>[orig_patent_app_number] => 443645 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/443645
Polymerization process Nov 17, 1999 Issued
Array ( [id] => 1440533 [patent_doc_number] => 06495641 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-12-17 [patent_title] => 'Catalysts based on vanadium, their preparation and use in the (CO) polymerization of -olefins' [patent_app_type] => B1 [patent_app_number] => 09/442647 [patent_app_country] => US [patent_app_date] => 1999-11-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8425 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/495/06495641.pdf [firstpage_image] =>[orig_patent_app_number] => 09442647 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/442647
Catalysts based on vanadium, their preparation and use in the (CO) polymerization of -olefins Nov 17, 1999 Issued
Array ( [id] => 4411189 [patent_doc_number] => 06310165 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-30 [patent_title] => 'Polymerization process with novel catalyst system' [patent_app_type] => 1 [patent_app_number] => 9/442826 [patent_app_country] => US [patent_app_date] => 1999-11-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7447 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/310/06310165.pdf [firstpage_image] =>[orig_patent_app_number] => 442826 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/442826
Polymerization process with novel catalyst system Nov 17, 1999 Issued
Array ( [id] => 4384368 [patent_doc_number] => 06294626 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-09-25 [patent_title] => 'Olefin polymerization catalysts containing modified boraaryl ligands' [patent_app_type] => 1 [patent_app_number] => 9/439462 [patent_app_country] => US [patent_app_date] => 1999-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4183 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 61 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/294/06294626.pdf [firstpage_image] =>[orig_patent_app_number] => 439462 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/439462
Olefin polymerization catalysts containing modified boraaryl ligands Nov 14, 1999 Issued
Array ( [id] => 4332718 [patent_doc_number] => 06313238 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-11-06 [patent_title] => 'Components and catalysts for the polymerization of olefins' [patent_app_type] => 1 [patent_app_number] => 9/437879 [patent_app_country] => US [patent_app_date] => 1999-11-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3713 [patent_no_of_claims] => 14 [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/06/313/06313238.pdf [firstpage_image] =>[orig_patent_app_number] => 437879 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/437879
Components and catalysts for the polymerization of olefins Nov 9, 1999 Issued
Array ( [id] => 1491112 [patent_doc_number] => 06417303 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-07-09 [patent_title] => 'Substantially linear copolymers' [patent_app_type] => B1 [patent_app_number] => 09/435178 [patent_app_country] => US [patent_app_date] => 1999-11-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6983 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 13 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/417/06417303.pdf [firstpage_image] =>[orig_patent_app_number] => 09435178 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/435178
Substantially linear copolymers Nov 4, 1999 Issued
Array ( [id] => 1387235 [patent_doc_number] => 06548441 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2003-04-15 [patent_title] => 'Organometal catalyst compositions' [patent_app_type] => B1 [patent_app_number] => 09/427800 [patent_app_country] => US [patent_app_date] => 1999-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6034 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/548/06548441.pdf [firstpage_image] =>[orig_patent_app_number] => 09427800 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/427800
Organometal catalyst compositions Oct 26, 1999 Issued
Array ( [id] => 4289854 [patent_doc_number] => 06268453 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-07-31 [patent_title] => 'Polymerization catalyst systems, their preparation, and use' [patent_app_type] => 1 [patent_app_number] => 9/419954 [patent_app_country] => US [patent_app_date] => 1999-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5172 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/268/06268453.pdf [firstpage_image] =>[orig_patent_app_number] => 419954 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/419954
Polymerization catalyst systems, their preparation, and use Oct 17, 1999 Issued
Array ( [id] => 1485993 [patent_doc_number] => 06365685 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-04-02 [patent_title] => 'Process for the preparation of random propylene copolymers and products obtained therefrom' [patent_app_type] => B1 [patent_app_number] => 09/413281 [patent_app_country] => US [patent_app_date] => 1999-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4915 [patent_no_of_claims] => 42 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 288 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/365/06365685.pdf [firstpage_image] =>[orig_patent_app_number] => 09413281 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/413281
Process for the preparation of random propylene copolymers and products obtained therefrom Oct 5, 1999 Issued
Array ( [id] => 352756 [patent_doc_number] => 07491778 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-02-17 [patent_title] => 'Superabsorbent water-resistant coatings' [patent_app_type] => utility [patent_app_number] => 09/409457 [patent_app_country] => US [patent_app_date] => 1999-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5030 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 98 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/491/07491778.pdf [firstpage_image] =>[orig_patent_app_number] => 09409457 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/409457
Superabsorbent water-resistant coatings Sep 29, 1999 Issued
Array ( [id] => 7640248 [patent_doc_number] => 06395666 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-05-28 [patent_title] => 'Organometal catalyst compositions' [patent_app_type] => B1 [patent_app_number] => 09/408904 [patent_app_country] => US [patent_app_date] => 1999-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7850 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 4 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/395/06395666.pdf [firstpage_image] =>[orig_patent_app_number] => 09408904 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/408904
Organometal catalyst compositions Sep 28, 1999 Issued
Array ( [id] => 1435951 [patent_doc_number] => 06355594 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-03-12 [patent_title] => 'Organometal catalyst compositions' [patent_app_type] => B1 [patent_app_number] => 09/401354 [patent_app_country] => US [patent_app_date] => 1999-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 6032 [patent_no_of_claims] => 81 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 31 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/355/06355594.pdf [firstpage_image] =>[orig_patent_app_number] => 09401354 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/401354
Organometal catalyst compositions Sep 26, 1999 Issued
Array ( [id] => 4411130 [patent_doc_number] => 06265504 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-07-24 [patent_title] => 'Preparation of ultra-high-molecular-weight polyethylene' [patent_app_type] => 1 [patent_app_number] => 9/401472 [patent_app_country] => US [patent_app_date] => 1999-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1990 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/265/06265504.pdf [firstpage_image] =>[orig_patent_app_number] => 401472 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/401472
Preparation of ultra-high-molecular-weight polyethylene Sep 21, 1999 Issued
Array ( [id] => 4381811 [patent_doc_number] => 06303718 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-16 [patent_title] => 'Composition based on fluorine-containing metal complexes' [patent_app_type] => 1 [patent_app_number] => 9/397936 [patent_app_country] => US [patent_app_date] => 1999-09-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4114 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 247 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/303/06303718.pdf [firstpage_image] =>[orig_patent_app_number] => 397936 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/397936
Composition based on fluorine-containing metal complexes Sep 16, 1999 Issued
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