Search

Eric Chang

Examiner (ID: 15894, Phone: (571)272-3671 , Office: P/2116 )

Most Active Art Unit
2116
Art Unit(s)
2186, 2116, 2185
Total Applications
657
Issued Applications
458
Pending Applications
14
Abandoned Applications
185

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20568634 [patent_doc_number] => 20260062555 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-05 [patent_title] => SELENIUM-CONTAINING ANALOGUES OF PHEOMELANIN AND RELATED MATERIALS AND METHODS OF MAKING [patent_app_type] => utility [patent_app_number] => 19/314677 [patent_app_country] => US [patent_app_date] => 2025-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 33877 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 19314677 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/314677
SELENIUM-CONTAINING ANALOGUES OF PHEOMELANIN AND RELATED MATERIALS AND METHODS OF MAKING Aug 28, 2025 Pending
Array ( [id] => 20393303 [patent_doc_number] => 20250368778 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-04 [patent_title] => POLYMER, PREPARATION METHOD, DISPERSANT, POSITIVE ELECTRODE SLURRY, POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, AND POWER CONSUMING APPARATUS [patent_app_type] => utility [patent_app_number] => 19/297519 [patent_app_country] => US [patent_app_date] => 2025-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15028 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 115 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19297519 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/297519
POLYMER, PREPARATION METHOD, DISPERSANT, POSITIVE ELECTRODE SLURRY, POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, AND POWER CONSUMING APPARATUS Aug 11, 2025 Pending
Array ( [id] => 20585433 [patent_doc_number] => 20260071024 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-12 [patent_title] => POLYPROPIOLACTONES AND METHODS OF PREPARATION [patent_app_type] => utility [patent_app_number] => 19/245722 [patent_app_country] => US [patent_app_date] => 2025-06-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11247 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 19245722 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/245722
POLYPROPIOLACTONES AND METHODS OF PREPARATION Jun 22, 2025 Pending
Array ( [id] => 19479531 [patent_doc_number] => 20240327573 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-03 [patent_title] => SYSTEM AND METHOD FOR MANUFACTURING POLYAMIC ACID, AND SYSTEM AND METHOD FOR MANUFACTURING POLYIMIDE [patent_app_type] => utility [patent_app_number] => 18/744272 [patent_app_country] => US [patent_app_date] => 2024-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 25607 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [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] => 18744272 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/744272
System and method for manufacturing polyamic acid, and system and method for manufacturing polyimide Jun 13, 2024 Issued
Array ( [id] => 20077634 [patent_doc_number] => 12351684 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-08 [patent_title] => Polyimide resin precursor, polyimide resin, metal-clad laminated board, laminate, and flexible printed wiring board [patent_app_type] => utility [patent_app_number] => 18/626296 [patent_app_country] => US [patent_app_date] => 2024-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5277 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 174 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18626296 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/626296
Polyimide resin precursor, polyimide resin, metal-clad laminated board, laminate, and flexible printed wiring board Apr 2, 2024 Issued
Array ( [id] => 19020270 [patent_doc_number] => 20240076441 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-07 [patent_title] => BRANCHED POLY(LACTIC ACID-3-HYDROXYPROPIONIC ACID)COPOLYMER AND METHOD FOR PREPARATION THEREOF [patent_app_type] => utility [patent_app_number] => 18/385786 [patent_app_country] => US [patent_app_date] => 2023-10-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7297 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18385786 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/385786
BRANCHED POLY(LACTIC ACID-3-HYDROXYPROPIONIC ACID)COPOLYMER AND METHOD FOR PREPARATION THEREOF Oct 30, 2023 Pending
Array ( [id] => 20730278 [patent_doc_number] => 12637526 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-26 [patent_title] => Dual catalyst system for producing high density polyethylenes with long chain branching [patent_app_type] => utility [patent_app_number] => 18/496994 [patent_app_country] => US [patent_app_date] => 2023-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 15181 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18496994 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/496994
Dual catalyst system for producing high density polyethylenes with long chain branching Oct 29, 2023 Issued
Array ( [id] => 19249244 [patent_doc_number] => 20240200231 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-20 [patent_title] => IN-SITU HYDROPHOBICALLY MODIFIED ARAMID NANO AEROGEL FIBER AND USES THEREOF [patent_app_type] => utility [patent_app_number] => 18/378677 [patent_app_country] => US [patent_app_date] => 2023-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5982 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 18378677 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/378677
In-situ hydrophobically modified aramid nano aerogel fiber and uses thereof Oct 10, 2023 Issued
Array ( [id] => 19300175 [patent_doc_number] => 20240228744 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-11 [patent_title] => POLY(VINYL ALCOHOL) RESIN COMPOSITION AND INJECTION-MOLDED OBJECT [patent_app_type] => utility [patent_app_number] => 18/373564 [patent_app_country] => US [patent_app_date] => 2023-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8091 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 37 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18373564 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/373564
POLY(VINYL ALCOHOL) RESIN COMPOSITION AND INJECTION-MOLDED OBJECT Sep 26, 2023 Pending
Array ( [id] => 19034300 [patent_doc_number] => 20240084115 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-14 [patent_title] => BLENDS OF VIRGIN LDPE AND POST CONSUMER RECYCLATE LOW AND/OR LINEAR LOW DENSITY POLYETHYLENE AND METHODS THEREOF [patent_app_type] => utility [patent_app_number] => 18/243352 [patent_app_country] => US [patent_app_date] => 2023-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4213 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18243352 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/243352
BLENDS OF VIRGIN LDPE AND POST CONSUMER RECYCLATE LOW AND/OR LINEAR LOW DENSITY POLYETHYLENE AND METHODS THEREOF Sep 6, 2023 Pending
Array ( [id] => 18916769 [patent_doc_number] => 11879039 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-01-23 [patent_title] => Preparation method for thermoplastic multi-hybrid polyimide films [patent_app_type] => utility [patent_app_number] => 18/233907 [patent_app_country] => US [patent_app_date] => 2023-08-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 4406 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 204 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18233907 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/233907
Preparation method for thermoplastic multi-hybrid polyimide films Aug 14, 2023 Issued
Array ( [id] => 18808697 [patent_doc_number] => 20230383031 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-30 [patent_title] => COPOLYMER, MOLDED BODY, INJECTION MOLDED BODY, AND COATED ELECTRICAL WIRE [patent_app_type] => utility [patent_app_number] => 18/448341 [patent_app_country] => US [patent_app_date] => 2023-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11468 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18448341 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/448341
COPOLYMER, MOLDED BODY, INJECTION MOLDED BODY, AND COATED ELECTRICAL WIRE Aug 10, 2023 Pending
Array ( [id] => 18808729 [patent_doc_number] => 20230383063 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-30 [patent_title] => CROSSLINKED POLYPHOSPHAZENE BLENDS FOR GAS SEPARATION MEMBRANES [patent_app_type] => utility [patent_app_number] => 18/227072 [patent_app_country] => US [patent_app_date] => 2023-07-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4071 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18227072 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/227072
Crosslinked polyphosphazene blends for gas separation membranes Jul 26, 2023 Issued
Array ( [id] => 18690316 [patent_doc_number] => 20230320459 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-12 [patent_title] => DEBONDABLE ADHESIVES AND USES THEREOF [patent_app_type] => utility [patent_app_number] => 18/336090 [patent_app_country] => US [patent_app_date] => 2023-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17427 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18336090 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/336090
Debondable adhesives and uses thereof Jun 15, 2023 Issued
Array ( [id] => 19479528 [patent_doc_number] => 20240327570 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-03 [patent_title] => Electrocatalytic production of polyethylene furanoate degradable bioplastic [patent_app_type] => utility [patent_app_number] => 18/199029 [patent_app_country] => US [patent_app_date] => 2023-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5300 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 33 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18199029 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/199029
Electrocatalytic production of polyethylene furanoate degradable bioplastic May 17, 2023 Pending
Array ( [id] => 18879355 [patent_doc_number] => 20240002724 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-04 [patent_title] => COPOLYMER FOR QUANTUM DOT LIGAND, AND QUANTUM DOT COMPLEX, QUANTUM DOT COMPOSITION, AND LIGHT-EMITTING DEVICE INCLUDING THE SAME [patent_app_type] => utility [patent_app_number] => 18/320086 [patent_app_country] => US [patent_app_date] => 2023-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8864 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 50 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18320086 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/320086
COPOLYMER FOR QUANTUM DOT LIGAND, AND QUANTUM DOT COMPLEX, QUANTUM DOT COMPOSITION, AND LIGHT-EMITTING DEVICE INCLUDING THE SAME May 17, 2023 Pending
Array ( [id] => 19083210 [patent_doc_number] => 20240110011 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-04 [patent_title] => HIGHLY AROMATIC AND LIQUID-CRYSTALLINE HOMO-POLYIMIDES WITH AROMATIC ENDGROUPS AND CROSSLINKED PRODUCTS THEREFROM [patent_app_type] => utility [patent_app_number] => 18/299090 [patent_app_country] => US [patent_app_date] => 2023-04-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6763 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 18299090 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/299090
HIGHLY AROMATIC AND LIQUID-CRYSTALLINE HOMO-POLYIMIDES WITH AROMATIC ENDGROUPS AND CROSSLINKED PRODUCTS THEREFROM Apr 11, 2023 Pending
Array ( [id] => 18498909 [patent_doc_number] => 20230221639 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-13 [patent_title] => PHOTOSENSITIVE RESIN COMPOSITION AND METHOD FOR PRODUCING CURED RELIEF PATTERN [patent_app_type] => utility [patent_app_number] => 18/124383 [patent_app_country] => US [patent_app_date] => 2023-03-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 32275 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 287 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18124383 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/124383
Photosensitive resin composition and method for producing cured relief pattern Mar 20, 2023 Issued
Array ( [id] => 19447719 [patent_doc_number] => 20240307849 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-19 [patent_title] => GUANIDINE AND MIXED-BASE FUNCTIONALIZED POLYMERS [patent_app_type] => utility [patent_app_number] => 18/185113 [patent_app_country] => US [patent_app_date] => 2023-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10314 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -22 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18185113 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/185113
GUANIDINE AND MIXED-BASE FUNCTIONALIZED POLYMERS Mar 15, 2023 Pending
Array ( [id] => 19059456 [patent_doc_number] => 11938658 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-03-26 [patent_title] => Multi-functional freestanding thin films produced using plastic waste and methods thereof [patent_app_type] => utility [patent_app_number] => 18/119235 [patent_app_country] => US [patent_app_date] => 2023-03-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3217 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18119235 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/119235
Multi-functional freestanding thin films produced using plastic waste and methods thereof Mar 7, 2023 Issued
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