Search

David L. Andrews

Examiner (ID: 10719, Phone: (571)272-6558 , Office: P/3672 )

Most Active Art Unit
3672
Art Unit(s)
3672
Total Applications
1186
Issued Applications
813
Pending Applications
83
Abandoned Applications
306

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20810596 [patent_doc_number] => 20260185418 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-07-02 [patent_title] => CABLE RETENTION SYSTEM AND METHOD OF MANUFACTURE FOR INFLATABLE PACKER [patent_app_type] => utility [patent_app_number] => 19/405516 [patent_app_country] => US [patent_app_date] => 2025-12-02 [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] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19405516 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/405516
CABLE RETENTION SYSTEM AND METHOD OF MANUFACTURE FOR INFLATABLE PACKER Dec 1, 2025 Pending
Array ( [id] => 20640114 [patent_doc_number] => 20260098467 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-09 [patent_title] => METHOD OF DETERMINING THE POSITION OF A DOWNHOLE TOOL IN A BOREHOLE [patent_app_type] => utility [patent_app_number] => 19/348371 [patent_app_country] => US [patent_app_date] => 2025-10-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1090 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19348371 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/348371
METHOD OF DETERMINING THE POSITION OF A DOWNHOLE TOOL IN A BOREHOLE Oct 1, 2025 Pending
Array ( [id] => 20473694 [patent_doc_number] => 20260015913 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-15 [patent_title] => Fixed Cutter Drill Bits and Cutter Elements with Secondary Cutting Edges for Same [patent_app_type] => utility [patent_app_number] => 19/334606 [patent_app_country] => US [patent_app_date] => 2025-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16874 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -22 [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] => 19334606 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/334606
Fixed Cutter Drill Bits and Cutter Elements with Secondary Cutting Edges for Same Sep 18, 2025 Pending
Array ( [id] => 20459873 [patent_doc_number] => 20260009296 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-08 [patent_title] => Tri-Axial Shock Absorber Sub [patent_app_type] => utility [patent_app_number] => 19/325815 [patent_app_country] => US [patent_app_date] => 2025-09-11 [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] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19325815 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/325815
Tri-Axial Shock Absorber Sub Sep 10, 2025 Pending
Array ( [id] => 20427077 [patent_doc_number] => 20250389165 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-25 [patent_title] => DOWNHOLE TOOL EMPLOYING A PRESSURE INTENSIFIER [patent_app_type] => utility [patent_app_number] => 19/317582 [patent_app_country] => US [patent_app_date] => 2025-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3309 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [patent_words_short_claim] => 141 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19317582 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/317582
DOWNHOLE TOOL EMPLOYING A PRESSURE INTENSIFIER Sep 2, 2025 Pending
Array ( [id] => 20379294 [patent_doc_number] => 20250361787 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-27 [patent_title] => RUPTURE DISC ASSEMBLY [patent_app_type] => utility [patent_app_number] => 19/291064 [patent_app_country] => US [patent_app_date] => 2025-08-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4833 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19291064 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/291064
RUPTURE DISC ASSEMBLY Aug 4, 2025 Pending
Array ( [id] => 20379288 [patent_doc_number] => 20250361781 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-27 [patent_title] => INTERNAL SLIP INCLUDING ONE OR MORE SYMMETRICAL TEETH [patent_app_type] => utility [patent_app_number] => 19/286667 [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] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19286667 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/286667
INTERNAL SLIP INCLUDING ONE OR MORE SYMMETRICAL TEETH Jul 30, 2025 Pending
Array ( [id] => 20499434 [patent_doc_number] => 20260028892 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-29 [patent_title] => DOWNHOLE TOOLS AND SYSTEMS AND RELATED METHODS OF USE [patent_app_type] => utility [patent_app_number] => 19/280684 [patent_app_country] => US [patent_app_date] => 2025-07-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4671 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19280684 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/280684
DOWNHOLE TOOLS AND SYSTEMS AND RELATED METHODS OF USE Jul 24, 2025 Pending
Array ( [id] => 20856990 [patent_doc_number] => 20260210214 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-07-23 [patent_title] => TIEBACK LINER SECTION [patent_app_type] => utility [patent_app_number] => 19/140714 [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] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19140714 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/140714
TIEBACK LINER SECTION Jun 17, 2025 Pending
Array ( [id] => 20288907 [patent_doc_number] => 20250314150 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-09 [patent_title] => ELECTRICALLY OPERATED LOW POWER COMPLETION CONTROL SYSTEM [patent_app_type] => utility [patent_app_number] => 19/239373 [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] => 2315 [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] => 19239373 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/239373
ELECTRICALLY OPERATED LOW POWER COMPLETION CONTROL SYSTEM Jun 15, 2025 Pending
Array ( [id] => 20165575 [patent_doc_number] => 20250257621 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-14 [patent_title] => DOWNHOLE TOOL STRING [patent_app_type] => utility [patent_app_number] => 19/193813 [patent_app_country] => US [patent_app_date] => 2025-04-29 [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] => -2 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19193813 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/193813
DOWNHOLE TOOL STRING Apr 28, 2025 Pending
Array ( [id] => 20763182 [patent_doc_number] => 20260160162 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-06-11 [patent_title] => IN-SITU SWEEP TESTING SYSTEM AND METHOD FOR CONDUCTING IN-SITU OIL RECOVERY SWEEP TESTING [patent_app_type] => utility [patent_app_number] => 19/179329 [patent_app_country] => US [patent_app_date] => 2025-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1126 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 211 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19179329 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/179329
IN-SITU SWEEP TESTING SYSTEM AND METHOD FOR CONDUCTING IN-SITU OIL RECOVERY SWEEP TESTING Apr 14, 2025 Pending
Array ( [id] => 20295542 [patent_doc_number] => 20250320785 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-16 [patent_title] => Collecting Device with an Adjustable Filter Position and Method for Use [patent_app_type] => utility [patent_app_number] => 19/173236 [patent_app_country] => US [patent_app_date] => 2025-04-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3338 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19173236 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/173236
Collecting Device with an Adjustable Filter Position and Method for Use Apr 7, 2025 Pending
Array ( [id] => 20280152 [patent_doc_number] => 20250305394 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-02 [patent_title] => DOWNHOLE SEALING TOOL ASSEMBLY AND ASSOCIATED METHODS [patent_app_type] => utility [patent_app_number] => 19/092626 [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] => 2301 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19092626 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/092626
DOWNHOLE SEALING TOOL ASSEMBLY AND ASSOCIATED METHODS Mar 26, 2025 Pending
Array ( [id] => 20194185 [patent_doc_number] => 20250270895 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-28 [patent_title] => SAFETY VALVE EMPLOYING A MECHANICAL CONNECTING APPARATUS HAVING ONE OR MORE MAGNETIC TARGETS [patent_app_type] => utility [patent_app_number] => 19/062310 [patent_app_country] => US [patent_app_date] => 2025-02-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9487 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19062310 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/062310
SAFETY VALVE EMPLOYING A MECHANICAL CONNECTING APPARATUS HAVING ONE OR MORE MAGNETIC TARGETS Feb 24, 2025 Pending
Array ( [id] => 20420770 [patent_doc_number] => 20250382855 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-18 [patent_title] => Downhole Inflow Control Valve With Multi-Stage Regulation [patent_app_type] => utility [patent_app_number] => 19/030970 [patent_app_country] => US [patent_app_date] => 2025-01-17 [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] => -12 [patent_words_short_claim] => 293 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19030970 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/030970
Downhole inflow control valve with multi-stage regulation Jan 16, 2025 Issued
Array ( [id] => 19832945 [patent_doc_number] => 20250084731 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => MAGNETICALLY COUPLED SUBSURFACE SAFETY VALVE [patent_app_type] => utility [patent_app_number] => 18/959063 [patent_app_country] => US [patent_app_date] => 2024-11-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8431 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18959063 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/959063
MAGNETICALLY COUPLED SUBSURFACE SAFETY VALVE Nov 24, 2024 Pending
Array ( [id] => 19817409 [patent_doc_number] => 20250075616 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-06 [patent_title] => NOISE CHARACTERIZATION IN FORMATION TESTING [patent_app_type] => utility [patent_app_number] => 18/946709 [patent_app_country] => US [patent_app_date] => 2024-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8979 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 209 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18946709 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/946709
NOISE CHARACTERIZATION IN FORMATION TESTING Nov 12, 2024 Pending
Array ( [id] => 19755072 [patent_doc_number] => 20250043637 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-06 [patent_title] => CONTROL LINE CLAMP CONFIGURATION, METHOD AND SYSTEM [patent_app_type] => utility [patent_app_number] => 18/921867 [patent_app_country] => US [patent_app_date] => 2024-10-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2699 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18921867 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/921867
Control line clamp configuration, method and system Oct 20, 2024 Issued
Array ( [id] => 19693630 [patent_doc_number] => 20250012175 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-09 [patent_title] => Perforating Panel Unit And Method [patent_app_type] => utility [patent_app_number] => 18/889079 [patent_app_country] => US [patent_app_date] => 2024-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8083 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18889079 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/889079
Perforating Panel Unit And Method Sep 17, 2024 Pending
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