Search

Kun Kai Ma

Examiner (ID: 17412, Phone: (571)270-3530 , Office: P/3744 )

Most Active Art Unit
3763
Art Unit(s)
3744, 3763
Total Applications
969
Issued Applications
713
Pending Applications
109
Abandoned Applications
172

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20708534 [patent_doc_number] => 20260132864 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-14 [patent_title] => DRILL STEM SAFETY VALVE ACTUATOR [patent_app_type] => utility [patent_app_number] => 19/383644 [patent_app_country] => US [patent_app_date] => 2025-11-08 [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] => -10 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19383644 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/383644
DRILL STEM SAFETY VALVE ACTUATOR Nov 7, 2025 Pending
Array ( [id] => 20694561 [patent_doc_number] => 20260125967 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-07 [patent_title] => FLOW CONTROL VALVE EMPLOYING AN ELECTRIC ACTUATOR AND A RESISTIVITY BASED POSITION SENSOR [patent_app_type] => utility [patent_app_number] => 19/379632 [patent_app_country] => US [patent_app_date] => 2025-11-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6227 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 19379632 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/379632
FLOW CONTROL VALVE EMPLOYING AN ELECTRIC ACTUATOR AND A RESISTIVITY BASED POSITION SENSOR Nov 3, 2025 Pending
Array ( [id] => 20722847 [patent_doc_number] => 20260139550 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-21 [patent_title] => PRE-RAKED CUTTER ELEMENTS FOR FIXED CUTTER DRILL BITS AND DRILL BITS INCLUDING SAME [patent_app_type] => utility [patent_app_number] => 19/379153 [patent_app_country] => US [patent_app_date] => 2025-11-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4327 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 385 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19379153 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/379153
PRE-RAKED CUTTER ELEMENTS FOR FIXED CUTTER DRILL BITS AND DRILL BITS INCLUDING SAME Nov 3, 2025 Pending
Array ( [id] => 20542650 [patent_doc_number] => 20260049540 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-19 [patent_title] => FLUID FLOW CONTROL SYSTEM EMPLOYING A FLUIDIC DIODE FOR CONTROL PRESSURE [patent_app_type] => utility [patent_app_number] => 19/371271 [patent_app_country] => US [patent_app_date] => 2025-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2197 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19371271 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/371271
FLUID FLOW CONTROL SYSTEM EMPLOYING A FLUIDIC DIODE FOR CONTROL PRESSURE Oct 27, 2025 Pending
Array ( [id] => 20722848 [patent_doc_number] => 20260139551 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-21 [patent_title] => DRILL BIT WITH EFFECTIVE SIDE RAKE FOR WEIGHT ON BIT REDUCING EFFECT [patent_app_type] => utility [patent_app_number] => 19/347073 [patent_app_country] => US [patent_app_date] => 2025-10-01 [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] => 143 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19347073 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/347073
DRILL BIT WITH EFFECTIVE SIDE RAKE FOR WEIGHT ON BIT REDUCING EFFECT Sep 30, 2025 Pending
Array ( [id] => 20569082 [patent_doc_number] => 20260063003 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-05 [patent_title] => ARTICULABLE COUPLINGS FOR DOWNHOLE TOOLS [patent_app_type] => utility [patent_app_number] => 19/312232 [patent_app_country] => US [patent_app_date] => 2025-08-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4627 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19312232 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/312232
ARTICULABLE COUPLINGS FOR DOWNHOLE TOOLS Aug 26, 2025 Pending
Array ( [id] => 20555891 [patent_doc_number] => 20260055671 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-26 [patent_title] => MOBILE RIG TO WELL ALIGNMENT SYSTEM AND METHOD [patent_app_type] => utility [patent_app_number] => 19/303961 [patent_app_country] => US [patent_app_date] => 2025-08-19 [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] => -28 [patent_words_short_claim] => 43 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19303961 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/303961
MOBILE RIG TO WELL ALIGNMENT SYSTEM AND METHOD Aug 18, 2025 Pending
Array ( [id] => 20730673 [patent_doc_number] => 12637923 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-26 [patent_title] => Insert sub-surface safety valve (SSSV) for use in cold temperature [patent_app_type] => utility [patent_app_number] => 19/293865 [patent_app_country] => US [patent_app_date] => 2025-08-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19293865 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/293865
Insert sub-surface safety valve (SSSV) for use in cold temperature Aug 6, 2025 Issued
Array ( [id] => 20511898 [patent_doc_number] => 20260035999 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-05 [patent_title] => DOWNHOLE MOTOR AND RELATED SYSTEMS AND METHODS FOR CONTROLLING FORMATION CONTACT POINTS [patent_app_type] => utility [patent_app_number] => 19/287055 [patent_app_country] => US [patent_app_date] => 2025-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5770 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19287055 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/287055
DOWNHOLE MOTOR AND RELATED SYSTEMS AND METHODS FOR CONTROLLING FORMATION CONTACT POINTS Jul 30, 2025 Pending
Array ( [id] => 20511923 [patent_doc_number] => 20260036024 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-05 [patent_title] => WELLBORE TOOL WITH EXTERNALLY-OPERATED BALLISTIC INTERRUPT [patent_app_type] => utility [patent_app_number] => 19/287282 [patent_app_country] => US [patent_app_date] => 2025-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4299 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 98 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19287282 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/287282
WELLBORE TOOL WITH EXTERNALLY-OPERATED BALLISTIC INTERRUPT Jul 30, 2025 Pending
19/143611 DEVICE, SYSTEM AND METHOD FOR REMOVAL OF CABLE CLAMPS FROM A PIPE STRING Jun 25, 2025 Pending
Array ( [id] => 20594155 [patent_doc_number] => 12577861 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-17 [patent_title] => Liquid accumulation-free production and drainage system for oil and gas well [patent_app_type] => utility [patent_app_number] => 19/244462 [patent_app_country] => US [patent_app_date] => 2025-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 11 [patent_no_of_words] => 1232 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 538 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19244462 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/244462
Liquid accumulation-free production and drainage system for oil and gas well Jun 19, 2025 Issued
Array ( [id] => 20280129 [patent_doc_number] => 20250305371 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-02 [patent_title] => COMPOSITE CABLE ROPE SOCKET [patent_app_type] => utility [patent_app_number] => 19/239229 [patent_app_country] => US [patent_app_date] => 2025-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1060 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 19239229 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/239229
Composite cable rope socket Jun 15, 2025 Issued
Array ( [id] => 20420762 [patent_doc_number] => 20250382847 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-18 [patent_title] => BYPASS TOOL FOR USE WITH A TUBING ANCHOR [patent_app_type] => utility [patent_app_number] => 19/237839 [patent_app_country] => US [patent_app_date] => 2025-06-13 [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] => -18 [patent_words_short_claim] => 34 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19237839 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/237839
BYPASS TOOL FOR USE WITH A TUBING ANCHOR Jun 12, 2025 Abandoned
Array ( [id] => 20536258 [patent_doc_number] => 12553325 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-02-17 [patent_title] => Method of controlling tensile-splitting and hydro-shearing parameters during completion of enhanced geothermal system wells [patent_app_type] => utility [patent_app_number] => 19/226414 [patent_app_country] => US [patent_app_date] => 2025-06-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 55 [patent_figures_cnt] => 79 [patent_no_of_words] => 29917 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 200 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19226414 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/226414
Method of controlling tensile-splitting and hydro-shearing parameters during completion of enhanced geothermal system wells Jun 2, 2025 Issued
19/135065 HEAVY LOAD PIPE HANDLER APPARATUS Jun 1, 2025 Pending
Array ( [id] => 20569081 [patent_doc_number] => 20260063002 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-05 [patent_title] => COOLING OF ELECTROCRUSHING DRILL ASSEMBLY [patent_app_type] => utility [patent_app_number] => 19/214222 [patent_app_country] => US [patent_app_date] => 2025-05-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8107 [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] => 19214222 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/214222
Cooling of electrocrushing drill assembly May 20, 2025 Issued
Array ( [id] => 20151027 [patent_doc_number] => 20250250865 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-07 [patent_title] => METHODS AND APPARATUS FOR BITLESS DRILLING [patent_app_type] => utility [patent_app_number] => 19/191078 [patent_app_country] => US [patent_app_date] => 2025-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15905 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 19191078 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/191078
METHODS AND APPARATUS FOR BITLESS DRILLING Apr 27, 2025 Pending
Array ( [id] => 20549276 [patent_doc_number] => 12560060 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-02-24 [patent_title] => Downhole pump top plunger adapter with improved sand handling capability [patent_app_type] => utility [patent_app_number] => 19/189515 [patent_app_country] => US [patent_app_date] => 2025-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 13 [patent_no_of_words] => 1186 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 457 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19189515 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/189515
Downhole pump top plunger adapter with improved sand handling capability Apr 24, 2025 Issued
Array ( [id] => 20694552 [patent_doc_number] => 20260125958 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-07 [patent_title] => DISPLACEMENT OF A TUBULAR STRING THROUGH A WELLBORE [patent_app_type] => utility [patent_app_number] => 19/182258 [patent_app_country] => US [patent_app_date] => 2025-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4472 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 41 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19182258 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/182258
DISPLACEMENT OF A TUBULAR STRING THROUGH A WELLBORE Apr 16, 2025 Pending
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