Search

Sing P. Chan

Examiner (ID: 19410, Phone: (571)272-1225 , Office: P/1745 )

Most Active Art Unit
1745
Art Unit(s)
1791, 1745, 1734
Total Applications
1303
Issued Applications
943
Pending Applications
36
Abandoned Applications
325

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19970092 [patent_doc_number] => 12338690 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-06-24 [patent_title] => Conductive bridging of a tubing encapsulated conductor for powering equipment in wellbore operations [patent_app_type] => utility [patent_app_number] => 18/649396 [patent_app_country] => US [patent_app_date] => 2024-04-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18649396 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/649396
Conductive bridging of a tubing encapsulated conductor for powering equipment in wellbore operations Apr 28, 2024 Issued
Array ( [id] => 20321918 [patent_doc_number] => 20250334006 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-30 [patent_title] => DRILL BITS AND METHODS OF FORMING AND REPAIRING DRILL BITS USING ADDITIVE MANUFACTURING [patent_app_type] => utility [patent_app_number] => 18/646034 [patent_app_country] => US [patent_app_date] => 2024-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [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] => 18646034 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/646034
Drill bits and methods of forming and repairing drill bits using additive manufacturing Apr 24, 2024 Issued
Array ( [id] => 20321933 [patent_doc_number] => 20250334021 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-30 [patent_title] => RADIAL SEALING SURFACE SYSTEM AND METHOD [patent_app_type] => utility [patent_app_number] => 18/645158 [patent_app_country] => US [patent_app_date] => 2024-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18645158 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/645158
Radial sealing surface system and method Apr 23, 2024 Issued
Array ( [id] => 20678797 [patent_doc_number] => 20260117609 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-30 [patent_title] => DOWNHOLE FLUID SEPARATION FOR DRILLING A WELL IN A HOT SUBTERRANEAN ZONE [patent_app_type] => utility [patent_app_number] => 19/482661 [patent_app_country] => US [patent_app_date] => 2024-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 20136 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 19482661 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/482661
DOWNHOLE FLUID SEPARATION FOR DRILLING A WELL IN A HOT SUBTERRANEAN ZONE Apr 12, 2024 Pending
Array ( [id] => 19904545 [patent_doc_number] => 12281541 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-22 [patent_title] => Downhole drilling tool with a polycrystalline diamond bearing [patent_app_type] => utility [patent_app_number] => 18/627141 [patent_app_country] => US [patent_app_date] => 2024-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 28 [patent_figures_cnt] => 58 [patent_no_of_words] => 16411 [patent_no_of_claims] => 47 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18627141 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/627141
Downhole drilling tool with a polycrystalline diamond bearing Apr 3, 2024 Issued
Array ( [id] => 19282283 [patent_doc_number] => 20240218757 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-04 [patent_title] => COMBINED ACTUATION OF SLIPS AND PACKER SEALING ELEMENT [patent_app_type] => utility [patent_app_number] => 18/607751 [patent_app_country] => US [patent_app_date] => 2024-03-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3593 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18607751 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/607751
Combined actuation of slips and packer sealing element Mar 17, 2024 Issued
Array ( [id] => 19449601 [patent_doc_number] => 20240309731 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-19 [patent_title] => WELL SYSTEM INCLUDING A LOWER COMPLETION STRING HAVING A PLURALITY OF SENSORS DISTRIBUTED ALONG AT LEAST A PORTION THEREOF [patent_app_type] => utility [patent_app_number] => 18/604730 [patent_app_country] => US [patent_app_date] => 2024-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 37311 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -38 [patent_words_short_claim] => 39 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18604730 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/604730
WELL SYSTEM INCLUDING A LOWER COMPLETION STRING HAVING A PLURALITY OF SENSORS DISTRIBUTED ALONG AT LEAST A PORTION THEREOF Mar 13, 2024 Pending
Array ( [id] => 19218564 [patent_doc_number] => 20240183268 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-06 [patent_title] => LAND AND LOCK MONITORING SYSTEM FOR HANGER [patent_app_type] => utility [patent_app_number] => 18/440060 [patent_app_country] => US [patent_app_date] => 2024-02-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9259 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18440060 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/440060
LAND AND LOCK MONITORING SYSTEM FOR HANGER Feb 12, 2024 Abandoned
Array ( [id] => 19826707 [patent_doc_number] => 12247476 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-11 [patent_title] => Wellbore depth instrument [patent_app_type] => utility [patent_app_number] => 18/439067 [patent_app_country] => US [patent_app_date] => 2024-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 12 [patent_no_of_words] => 7732 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 333 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18439067 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/439067
Wellbore depth instrument Feb 11, 2024 Issued
Array ( [id] => 20136684 [patent_doc_number] => 20250243728 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-31 [patent_title] => MECHANISMS AND SYSTEMS TO RETRIEVE WIRELINE Y-PLUG IN ESP WELLS [patent_app_type] => utility [patent_app_number] => 18/423122 [patent_app_country] => US [patent_app_date] => 2024-01-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2225 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18423122 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/423122
MECHANISMS AND SYSTEMS TO RETRIEVE WIRELINE Y-PLUG IN ESP WELLS Jan 24, 2024 Pending
Array ( [id] => 19249451 [patent_doc_number] => 20240200439 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-20 [patent_title] => DOWNHOLE SENSOR ASSEMBLY FOR ALIGNMENT MEASUREMENT [patent_app_type] => utility [patent_app_number] => 18/542113 [patent_app_country] => US [patent_app_date] => 2023-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2962 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18542113 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/542113
Downhole sensor assembly for alignment measurement Dec 14, 2023 Issued
Array ( [id] => 19266013 [patent_doc_number] => 20240209712 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-27 [patent_title] => PENETRATOR SYSTEM FOR ELECTRICAL SUBMERSIBLE PUMPS [patent_app_type] => utility [patent_app_number] => 18/539711 [patent_app_country] => US [patent_app_date] => 2023-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6050 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 205 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18539711 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/539711
Penetrator system for electrical submersible pumps Dec 13, 2023 Issued
Array ( [id] => 19218535 [patent_doc_number] => 20240183239 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-06 [patent_title] => Core Barrel Head Assembly With An Integrated Sample Orientation Tool And System For Using Same [patent_app_type] => utility [patent_app_number] => 18/533691 [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] => 12242 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -1 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18533691 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/533691
Core barrel head assembly with an integrated sample orientation tool and system for using same Dec 7, 2023 Issued
Array ( [id] => 19419026 [patent_doc_number] => 20240295149 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-05 [patent_title] => IN-SITU DETECTION ROBOT AND DETECTION METHOD FOR GEOLOGICAL INFORMATION WITHOUT DISTURBANCE OF IN-SITU STRESS [patent_app_type] => utility [patent_app_number] => 18/530265 [patent_app_country] => US [patent_app_date] => 2023-12-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6734 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 270 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18530265 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/530265
In-situ detection robot and detection method for geological information without disturbance of in-situ stress Dec 5, 2023 Issued
Array ( [id] => 20158710 [patent_doc_number] => 12385324 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-12 [patent_title] => Two-stage drill bit [patent_app_type] => utility [patent_app_number] => 18/501520 [patent_app_country] => US [patent_app_date] => 2023-11-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 5088 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18501520 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/501520
Two-stage drill bit Nov 2, 2023 Issued
Array ( [id] => 19962124 [patent_doc_number] => 12331613 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-17 [patent_title] => Composite downhole tools [patent_app_type] => utility [patent_app_number] => 18/493471 [patent_app_country] => US [patent_app_date] => 2023-10-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 12 [patent_no_of_words] => 4224 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18493471 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/493471
Composite downhole tools Oct 23, 2023 Issued
Array ( [id] => 20640097 [patent_doc_number] => 20260098450 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-09 [patent_title] => COMPOSITE JOINT WITH CASING EXIT LOCATOR [patent_app_type] => utility [patent_app_number] => 19/116393 [patent_app_country] => US [patent_app_date] => 2023-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19116393 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/116393
COMPOSITE JOINT WITH CASING EXIT LOCATOR Oct 5, 2023 Pending
Array ( [id] => 19098465 [patent_doc_number] => 20240117693 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-11 [patent_title] => DOWNHOLE TOOL INCLUDING A BORE SENSOR [patent_app_type] => utility [patent_app_number] => 18/481615 [patent_app_country] => US [patent_app_date] => 2023-10-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 23691 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18481615 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/481615
DOWNHOLE TOOL INCLUDING A BORE SENSOR Oct 4, 2023 Pending
Array ( [id] => 20116434 [patent_doc_number] => 12366128 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-22 [patent_title] => Automated drilling-fluid additive system and method [patent_app_type] => utility [patent_app_number] => 18/373530 [patent_app_country] => US [patent_app_date] => 2023-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 0 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 243 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18373530 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/373530
Automated drilling-fluid additive system and method Sep 26, 2023 Issued
Array ( [id] => 20639299 [patent_doc_number] => 20260097651 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-09 [patent_title] => CIVIL ENGINEERING MACHINE AND METHOD FOR OPERATING A CIVIL ENGINEERING MACHINE [patent_app_type] => utility [patent_app_number] => 19/114109 [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] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19114109 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/114109
CIVIL ENGINEERING MACHINE AND METHOD FOR OPERATING A CIVIL ENGINEERING MACHINE Sep 26, 2023 Pending
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