Search

William T. Leader

Examiner (ID: 18853)

Most Active Art Unit
1102
Art Unit(s)
1741, 1742, 1753, 1795, 1723, 1109, 1106, 1104, 1102, 1754, 2899
Total Applications
1892
Issued Applications
1323
Pending Applications
98
Abandoned Applications
472

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20722386 [patent_doc_number] => 20260139089 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-21 [patent_title] => POLYURETHANE INSULATION FOAM COMPOSITION COMPRISING A STABILIZING COMPOUND [patent_app_type] => utility [patent_app_number] => 19/354003 [patent_app_country] => US [patent_app_date] => 2025-10-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5465 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19354003 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/354003
POLYURETHANE INSULATION FOAM COMPOSITION COMPRISING A STABILIZING COMPOUND Oct 8, 2025 Pending
Array ( [id] => 20093478 [patent_doc_number] => 20250223414 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => MIXTURES CONTAINING 1.1.1.4.4.4.- HEXAFLUOROBUTENE AND 1-CHLORO-3.3.3-TRIFLUOROPROPENE [patent_app_type] => utility [patent_app_number] => 19/092649 [patent_app_country] => US [patent_app_date] => 2025-03-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1748 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 46 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19092649 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/092649
MIXTURES CONTAINING 1.1.1.4.4.4.- HEXAFLUOROBUTENE AND 1-CHLORO-3.3.3-TRIFLUOROPROPENE Mar 26, 2025 Abandoned
Array ( [id] => 20059359 [patent_doc_number] => 20250197581 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-19 [patent_title] => HYDROFLUORO OLEFIN PROPELLANT IN A POLYURETHANE FOAM COMPOSITION [patent_app_type] => utility [patent_app_number] => 19/058590 [patent_app_country] => US [patent_app_date] => 2025-02-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3515 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19058590 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/058590
Hydrofluoro olefin propellant in a polyurethane foam composition Feb 19, 2025 Issued
Array ( [id] => 19497741 [patent_doc_number] => 20240336759 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-10 [patent_title] => Isocyanate-Functional Polymer Components and Polyurethane Articles Formed From Recycled Polyurethane Articles and Associated Methods for Forming Same [patent_app_type] => utility [patent_app_number] => 18/748720 [patent_app_country] => US [patent_app_date] => 2024-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15557 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18748720 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/748720
Isocyanate-Functional Polymer Components and Polyurethane Articles Formed From Recycled Polyurethane Articles and Associated Methods for Forming Same Jun 19, 2024 Pending
Array ( [id] => 19528310 [patent_doc_number] => 20240352212 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-24 [patent_title] => COMPOSITIONS COMPRISING 1,2-DICHLORO-1,2-DIFLUOROETHYLENE FOR USE IN FOAM BLOWING APPLICATIONS [patent_app_type] => utility [patent_app_number] => 18/736653 [patent_app_country] => US [patent_app_date] => 2024-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 23181 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18736653 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/736653
COMPOSITIONS COMPRISING 1,2-DICHLORO-1,2-DIFLUOROETHYLENE FOR USE IN FOAM BLOWING APPLICATIONS Jun 6, 2024 Abandoned
Array ( [id] => 20701450 [patent_doc_number] => 12624150 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-12 [patent_title] => Surfactant-free filled polyurethane foam and method of making same [patent_app_type] => utility [patent_app_number] => 18/674146 [patent_app_country] => US [patent_app_date] => 2024-05-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 9649 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18674146 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/674146
Surfactant-free filled polyurethane foam and method of making same May 23, 2024 Issued
Array ( [id] => 19403729 [patent_doc_number] => 20240287240 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-29 [patent_title] => POST POLYMERIZATION CURE SHAPE MEMORY POLYMERS [patent_app_type] => utility [patent_app_number] => 18/630394 [patent_app_country] => US [patent_app_date] => 2024-04-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7133 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18630394 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/630394
POST POLYMERIZATION CURE SHAPE MEMORY POLYMERS Apr 8, 2024 Pending
Array ( [id] => 19332692 [patent_doc_number] => 20240247122 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-25 [patent_title] => Modified Formula for Hydrophilic Foam [patent_app_type] => utility [patent_app_number] => 18/627352 [patent_app_country] => US [patent_app_date] => 2024-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6231 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18627352 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/627352
Modified formula for hydrophilic foam Apr 3, 2024 Issued
Array ( [id] => 20150567 [patent_doc_number] => 20250250405 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-07 [patent_title] => EXPANDABLE RESIN PARTICLE, EXPANDED RESIN PARTICLE, FOAMED RESIN MOLDED ARTICLE AND MANUFACTURING METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 18/605919 [patent_app_country] => US [patent_app_date] => 2024-03-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7424 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18605919 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/605919
EXPANDABLE RESIN PARTICLE, EXPANDED RESIN PARTICLE, FOAMED RESIN MOLDED ARTICLE AND MANUFACTURING METHOD THEREOF Mar 14, 2024 Pending
Array ( [id] => 20645877 [patent_doc_number] => 12600813 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-04-14 [patent_title] => Polyurethane insulation foam composition comprising a stabilizing compound [patent_app_type] => utility [patent_app_number] => 18/599966 [patent_app_country] => US [patent_app_date] => 2024-03-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5477 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 418 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18599966 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/599966
Polyurethane insulation foam composition comprising a stabilizing compound Mar 7, 2024 Issued
Array ( [id] => 19381047 [patent_doc_number] => 20240270917 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-15 [patent_title] => METHODS OF FORMING POLYOL PREMIXES AND FOAMABLE COMPOSITIONS AND FOAMS FORMED THEREFROM [patent_app_type] => utility [patent_app_number] => 18/423521 [patent_app_country] => US [patent_app_date] => 2024-01-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14847 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18423521 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/423521
METHODS OF FORMING POLYOL PREMIXES AND FOAMABLE COMPOSITIONS AND FOAMS FORMED THEREFROM Jan 25, 2024 Pending
Array ( [id] => 19127334 [patent_doc_number] => 20240132687 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-25 [patent_title] => Thermally expandable compositions comprising wax [patent_app_type] => utility [patent_app_number] => 18/390596 [patent_app_country] => US [patent_app_date] => 2023-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5800 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18390596 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/390596
Thermally expandable compositions comprising wax Dec 19, 2023 Pending
Array ( [id] => 19187960 [patent_doc_number] => 20240166873 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-23 [patent_title] => METHOD OF PRODUCING A POLYAMIDE FOAM MOLDED ARTICLE [patent_app_type] => utility [patent_app_number] => 18/533638 [patent_app_country] => US [patent_app_date] => 2023-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17011 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18533638 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/533638
METHOD OF PRODUCING A POLYAMIDE FOAM MOLDED ARTICLE Dec 7, 2023 Pending
Array ( [id] => 18972033 [patent_doc_number] => 20240052125 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-15 [patent_title] => HIERARCHICAL POROUS POLYMERIC MATERIAL AND PREPARATION METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 18/494789 [patent_app_country] => US [patent_app_date] => 2023-10-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6028 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18494789 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/494789
HIERARCHICAL POROUS POLYMERIC MATERIAL AND PREPARATION METHOD THEREOF Oct 25, 2023 Pending
Array ( [id] => 20213650 [patent_doc_number] => 12410293 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-09 [patent_title] => Systems and methods relating to medical applications of inverse thermosensitive polymer foam formulations [patent_app_type] => utility [patent_app_number] => 18/485800 [patent_app_country] => US [patent_app_date] => 2023-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3895 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 180 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18485800 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/485800
Systems and methods relating to medical applications of inverse thermosensitive polymer foam formulations Oct 11, 2023 Issued
Array ( [id] => 20227256 [patent_doc_number] => 12415899 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-16 [patent_title] => Polyurethane foam [patent_app_type] => utility [patent_app_number] => 18/333751 [patent_app_country] => US [patent_app_date] => 2023-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 13268 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18333751 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/333751
Polyurethane foam Sep 13, 2023 Issued
Array ( [id] => 19464289 [patent_doc_number] => 20240317958 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => POLYURETHANE FOAM COMPOSITION CONTAINING TPU POWDER AND MANUFACTURING METHOD OF SHOE INSOLE USING THE SAME [patent_app_type] => utility [patent_app_number] => 18/367338 [patent_app_country] => US [patent_app_date] => 2023-09-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4775 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 27 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18367338 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/367338
Polyurethane foam composition containing TPU powder and manufacturing method of shoe insole using the same Sep 11, 2023 Issued
Array ( [id] => 19884270 [patent_doc_number] => 12269963 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-08 [patent_title] => Polyurea copolymer coating compositions and methods [patent_app_type] => utility [patent_app_number] => 18/237883 [patent_app_country] => US [patent_app_date] => 2023-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15719 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18237883 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/237883
Polyurea copolymer coating compositions and methods Aug 23, 2023 Issued
Array ( [id] => 18817632 [patent_doc_number] => 20230391972 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-07 [patent_title] => METHOD FOR PREPARING FOAM MATERIALS BY SUPERCRITICAL FOAMING [patent_app_type] => utility [patent_app_number] => 18/234897 [patent_app_country] => US [patent_app_date] => 2023-08-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4046 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18234897 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/234897
METHOD FOR PREPARING FOAM MATERIALS BY SUPERCRITICAL FOAMING Aug 16, 2023 Pending
Array ( [id] => 19067431 [patent_doc_number] => 20240101857 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-28 [patent_title] => METHOD OF PRODUCING POROUS BODY, AND POROUS BODY [patent_app_type] => utility [patent_app_number] => 18/234958 [patent_app_country] => US [patent_app_date] => 2023-08-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5149 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18234958 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/234958
METHOD OF PRODUCING POROUS BODY, AND POROUS BODY Aug 16, 2023 Pending
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