Search

David L. Andrews

Examiner (ID: 6232, Phone: (571)272-6558 , Office: P/3672 )

Most Active Art Unit
3672
Art Unit(s)
3672
Total Applications
1158
Issued Applications
793
Pending Applications
94
Abandoned Applications
298

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20330248 [patent_doc_number] => 12460517 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-04 [patent_title] => Interlocking perforation gun and methods of use [patent_app_type] => utility [patent_app_number] => 18/643288 [patent_app_country] => US [patent_app_date] => 2024-04-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 21 [patent_no_of_words] => 13795 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18643288 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/643288
Interlocking perforation gun and methods of use Apr 22, 2024 Issued
Array ( [id] => 19512720 [patent_doc_number] => 20240344406 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-17 [patent_title] => Tri-Axial Shock Absorber Sub [patent_app_type] => utility [patent_app_number] => 18/641566 [patent_app_country] => US [patent_app_date] => 2024-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4190 [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] => 18641566 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/641566
Tri-axial shock absorber sub Apr 21, 2024 Issued
Array ( [id] => 19512720 [patent_doc_number] => 20240344406 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-17 [patent_title] => Tri-Axial Shock Absorber Sub [patent_app_type] => utility [patent_app_number] => 18/641566 [patent_app_country] => US [patent_app_date] => 2024-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4190 [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] => 18641566 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/641566
Tri-axial shock absorber sub Apr 21, 2024 Issued
Array ( [id] => 20309735 [patent_doc_number] => 20250327364 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-23 [patent_title] => DOWNHOLE WELL TOOL HAVING A CONNECTOR MECHANISM WITH A CLEANING DIELECTRIC CHAMBER FOR WELL SYSTEMS [patent_app_type] => utility [patent_app_number] => 18/638110 [patent_app_country] => US [patent_app_date] => 2024-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1230 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18638110 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/638110
DOWNHOLE WELL TOOL HAVING A CONNECTOR MECHANISM WITH A CLEANING DIELECTRIC CHAMBER FOR WELL SYSTEMS Apr 16, 2024 Pending
Array ( [id] => 19234387 [patent_doc_number] => 20240191580 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-13 [patent_title] => SYSTEMS AND METHODS FOR TUBULAR ELEMENT HANDLING [patent_app_type] => utility [patent_app_number] => 18/584653 [patent_app_country] => US [patent_app_date] => 2024-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5085 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18584653 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/584653
SYSTEMS AND METHODS FOR TUBULAR ELEMENT HANDLING Feb 21, 2024 Pending
Array ( [id] => 20180054 [patent_doc_number] => 20250264012 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-21 [patent_title] => SYSTEMS AND METHODS FOR REAL TIME DOWNHOLE MOTOR POWER CURVE GENERATION [patent_app_type] => utility [patent_app_number] => 18/443522 [patent_app_country] => US [patent_app_date] => 2024-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17937 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18443522 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/443522
SYSTEMS AND METHODS FOR REAL TIME DOWNHOLE MOTOR POWER CURVE GENERATION Feb 15, 2024 Pending
Array ( [id] => 19404540 [patent_doc_number] => 20240288051 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-29 [patent_title] => Multi-Plunger Pumps and Associated Drive Systems [patent_app_type] => utility [patent_app_number] => 18/437750 [patent_app_country] => US [patent_app_date] => 2024-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4496 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -26 [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] => 18437750 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/437750
Multi-Plunger Pumps and Associated Drive Systems Feb 8, 2024 Pending
Array ( [id] => 19345897 [patent_doc_number] => 20240254860 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-01 [patent_title] => DOWN-THE-HOLE DRILL HAMMER HAVING A PISTON FOLLOWER VALVE [patent_app_type] => utility [patent_app_number] => 18/423787 [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] => 4821 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [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] => 18423787 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/423787
DOWN-THE-HOLE DRILL HAMMER HAVING A PISTON FOLLOWER VALVE Jan 25, 2024 Pending
Array ( [id] => 19999134 [patent_doc_number] => 20250137356 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-01 [patent_title] => MULTILATERAL JUNCTION INCLUDING AN EXPANDABLE SEALING ELEMENT [patent_app_type] => utility [patent_app_number] => 18/416001 [patent_app_country] => US [patent_app_date] => 2024-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4468 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18416001 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/416001
MULTILATERAL JUNCTION INCLUDING AN EXPANDABLE SEALING ELEMENT Jan 17, 2024 Pending
Array ( [id] => 19158410 [patent_doc_number] => 20240151117 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => HYDRAULIC FRACTURING PLUG [patent_app_type] => utility [patent_app_number] => 18/415645 [patent_app_country] => US [patent_app_date] => 2024-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3654 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18415645 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/415645
Hydraulic fracturing plug Jan 17, 2024 Issued
Array ( [id] => 19999134 [patent_doc_number] => 20250137356 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-01 [patent_title] => MULTILATERAL JUNCTION INCLUDING AN EXPANDABLE SEALING ELEMENT [patent_app_type] => utility [patent_app_number] => 18/416001 [patent_app_country] => US [patent_app_date] => 2024-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4468 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18416001 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/416001
MULTILATERAL JUNCTION INCLUDING AN EXPANDABLE SEALING ELEMENT Jan 17, 2024 Pending
Array ( [id] => 20093946 [patent_doc_number] => 20250223882 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => DOWNHOLE TOOL EMPLOYING A PRESSURE INTENSIFIER [patent_app_type] => utility [patent_app_number] => 18/407842 [patent_app_country] => US [patent_app_date] => 2024-01-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3294 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 18407842 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/407842
Downhole tool employing a pressure intensifier Jan 8, 2024 Issued
Array ( [id] => 20093946 [patent_doc_number] => 20250223882 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => DOWNHOLE TOOL EMPLOYING A PRESSURE INTENSIFIER [patent_app_type] => utility [patent_app_number] => 18/407842 [patent_app_country] => US [patent_app_date] => 2024-01-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3294 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 18407842 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/407842
Downhole tool employing a pressure intensifier Jan 8, 2024 Issued
Array ( [id] => 20093955 [patent_doc_number] => 20250223891 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => SYSTEMS AND METHODS FOR REAL TIME OIL TOOL ORIENTATION DETECTION [patent_app_type] => utility [patent_app_number] => 18/406556 [patent_app_country] => US [patent_app_date] => 2024-01-08 [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] => -17 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18406556 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/406556
SYSTEMS AND METHODS FOR REAL TIME OIL TOOL ORIENTATION DETECTION Jan 7, 2024 Pending
Array ( [id] => 20093203 [patent_doc_number] => 20250223139 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => DUAL LINE DRAWWORKS [patent_app_type] => utility [patent_app_number] => 18/406054 [patent_app_country] => US [patent_app_date] => 2024-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11618 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -26 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18406054 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/406054
DUAL LINE DRAWWORKS Jan 4, 2024 Pending
Array ( [id] => 20085848 [patent_doc_number] => 20250215784 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => DOWNHOLE SLEEVES AND MAGNETIC ASSEMBLIES [patent_app_type] => utility [patent_app_number] => 18/403579 [patent_app_country] => US [patent_app_date] => 2024-01-03 [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] => -16 [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] => 18403579 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/403579
Downhole sleeves and magnetic assemblies Jan 2, 2024 Issued
Array ( [id] => 20085827 [patent_doc_number] => 20250215763 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => PACKER BACK-UP SHOE [patent_app_type] => utility [patent_app_number] => 18/400494 [patent_app_country] => US [patent_app_date] => 2023-12-29 [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] => -17 [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] => 18400494 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/400494
PACKER BACK-UP SHOE Dec 28, 2023 Pending
Array ( [id] => 19984543 [patent_doc_number] => 20250122765 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-17 [patent_title] => HYDRAULIC COLLAPSIBLE ROTARY STAND FOR WIRELINE CORING UNDERGROUND DRILL RIG [patent_app_type] => utility [patent_app_number] => 18/398301 [patent_app_country] => US [patent_app_date] => 2023-12-28 [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] => -19 [patent_words_short_claim] => 276 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18398301 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/398301
Hydraulic collapsible rotary stand for wireline coring underground drill rig Dec 27, 2023 Issued
Array ( [id] => 20069262 [patent_doc_number] => 20250207484 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-26 [patent_title] => Electric Submersible Pump Assembly [patent_app_type] => utility [patent_app_number] => 18/396518 [patent_app_country] => US [patent_app_date] => 2023-12-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4848 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 69 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18396518 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/396518
Electric Submersible Pump Assembly Dec 25, 2023 Abandoned
Array ( [id] => 20069261 [patent_doc_number] => 20250207483 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-26 [patent_title] => MECHANICAL SUPPORT FOR EXPANDABLE LINER HANGER [patent_app_type] => utility [patent_app_number] => 18/396082 [patent_app_country] => US [patent_app_date] => 2023-12-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2279 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18396082 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/396082
MECHANICAL SUPPORT FOR EXPANDABLE LINER HANGER Dec 25, 2023 Pending
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