Search

Keith D. Walker

Supervisory Patent Examiner (ID: 7518, Phone: (571)272-3458 , Office: P/1735 )

Most Active Art Unit
1735
Art Unit(s)
1726, 1745, 1795, 1735
Total Applications
565
Issued Applications
152
Pending Applications
54
Abandoned Applications
362

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 18955908 [patent_doc_number] => 20240044235 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-08 [patent_title] => HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS [patent_app_type] => utility [patent_app_number] => 18/487865 [patent_app_country] => US [patent_app_date] => 2023-10-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 31098 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18487865 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/487865
HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS Oct 15, 2023 Pending
Array ( [id] => 19158516 [patent_doc_number] => 20240151223 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => SELF-MAINTAINING SEALS, PUMPS INCLUDING THE SAME, AND RELATED METHODS [patent_app_type] => utility [patent_app_number] => 18/486494 [patent_app_country] => US [patent_app_date] => 2023-10-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6205 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [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] => 18486494 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/486494
SELF-MAINTAINING SEALS, PUMPS INCLUDING THE SAME, AND RELATED METHODS Oct 12, 2023 Pending
Array ( [id] => 20480905 [patent_doc_number] => 12529377 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-20 [patent_title] => Scroll compressor [patent_app_type] => utility [patent_app_number] => 18/485820 [patent_app_country] => US [patent_app_date] => 2023-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3516 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 270 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18485820 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/485820
Scroll compressor Oct 11, 2023 Issued
Array ( [id] => 20480905 [patent_doc_number] => 12529377 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-20 [patent_title] => Scroll compressor [patent_app_type] => utility [patent_app_number] => 18/485820 [patent_app_country] => US [patent_app_date] => 2023-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3516 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 270 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18485820 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/485820
Scroll compressor Oct 11, 2023 Issued
Array ( [id] => 18940329 [patent_doc_number] => 20240035468 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => FLUID END [patent_app_type] => utility [patent_app_number] => 18/483871 [patent_app_country] => US [patent_app_date] => 2023-10-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 53550 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 18483871 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/483871
Fluid end Oct 9, 2023 Issued
Array ( [id] => 20549375 [patent_doc_number] => 12560160 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-02-24 [patent_title] => Pump controller assembly [patent_app_type] => utility [patent_app_number] => 18/377934 [patent_app_country] => US [patent_app_date] => 2023-10-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 20 [patent_no_of_words] => 5854 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18377934 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/377934
Pump controller assembly Oct 8, 2023 Issued
Array ( [id] => 18972732 [patent_doc_number] => 20240052824 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-15 [patent_title] => CORDLESS COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/481528 [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] => 3226 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18481528 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/481528
Cordless compressor Oct 4, 2023 Issued
Array ( [id] => 20459979 [patent_doc_number] => 20260009403 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-08 [patent_title] => TREATMENT OF NON-AXISYMMETRIC CASING WITH CONTROLLED OPENING [patent_app_type] => utility [patent_app_number] => 19/117504 [patent_app_country] => US [patent_app_date] => 2023-09-28 [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] => -7 [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] => 19117504 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/117504
Treatment of non-axisymmetric casing with controlled opening Sep 27, 2023 Issued
Array ( [id] => 20527887 [patent_doc_number] => 12546317 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-02-10 [patent_title] => Compressor including refrigerant introduction tube [patent_app_type] => utility [patent_app_number] => 18/371241 [patent_app_country] => US [patent_app_date] => 2023-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18371241 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/371241
Compressor including refrigerant introduction tube Sep 20, 2023 Issued
Array ( [id] => 19851287 [patent_doc_number] => 20250096638 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-20 [patent_title] => ELECTRIC SCROLL COMPRESSOR WITH MOTOR CONNECTOR ASSEMBLY AND MOTOR CONNECTOR ASSEMBLY FOR ELECTRIC SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/467496 [patent_app_country] => US [patent_app_date] => 2023-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12771 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [patent_words_short_claim] => 262 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18467496 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/467496
ELECTRIC SCROLL COMPRESSOR WITH MOTOR CONNECTOR ASSEMBLY AND MOTOR CONNECTOR ASSEMBLY FOR ELECTRIC SCROLL COMPRESSOR Sep 13, 2023 Pending
Array ( [id] => 19580387 [patent_doc_number] => 12146491 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-19 [patent_title] => Thermistor flow path [patent_app_type] => utility [patent_app_number] => 18/459864 [patent_app_country] => US [patent_app_date] => 2023-09-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 2667 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 234 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18459864 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/459864
Thermistor flow path Aug 31, 2023 Issued
Array ( [id] => 20256600 [patent_doc_number] => 12428943 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-30 [patent_title] => Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods [patent_app_type] => utility [patent_app_number] => 18/453257 [patent_app_country] => US [patent_app_date] => 2023-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 22 [patent_no_of_words] => 24380 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 340 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18453257 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/453257
Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods Aug 20, 2023 Issued
Array ( [id] => 19659240 [patent_doc_number] => 20240426305 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-26 [patent_title] => CENTRIFUGAL-TYPE ELECTRIC REFRIGERANT COMPRESSOR HAVING INTEGRAL ORIFICE-REGULATED BEARING COOLING ARRANGEMENT [patent_app_type] => utility [patent_app_number] => 18/365214 [patent_app_country] => US [patent_app_date] => 2023-08-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2536 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 180 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18365214 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/365214
CENTRIFUGAL-TYPE ELECTRIC REFRIGERANT COMPRESSOR HAVING INTEGRAL ORIFICE-REGULATED BEARING COOLING ARRANGEMENT Aug 3, 2023 Pending
Array ( [id] => 18940224 [patent_doc_number] => 20240035363 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => FRACTURING APPARATUS AND CONTROL METHOD THEREOF, FRACTURING SYSTEM [patent_app_type] => utility [patent_app_number] => 18/360678 [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] => 26219 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18360678 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/360678
Fracturing apparatus and control method thereof, fracturing system Jul 26, 2023 Issued
Array ( [id] => 18940322 [patent_doc_number] => 20240035461 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => INFLATION PUMP AND INFLATION DEVICE [patent_app_type] => utility [patent_app_number] => 18/357281 [patent_app_country] => US [patent_app_date] => 2023-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7731 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18357281 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/357281
INFLATION PUMP AND INFLATION DEVICE Jul 23, 2023 Abandoned
Array ( [id] => 19724742 [patent_doc_number] => 20250027493 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-23 [patent_title] => PUMP BODY ASSEMBLY AND BOOSTER ENERGY-SAVING WATER PUMP WITH THE SAME [patent_app_type] => utility [patent_app_number] => 18/224148 [patent_app_country] => US [patent_app_date] => 2023-07-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5239 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 18224148 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/224148
PUMP BODY ASSEMBLY AND BOOSTER ENERGY-SAVING WATER PUMP WITH THE SAME Jul 19, 2023 Abandoned
Array ( [id] => 18845459 [patent_doc_number] => 20230407863 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-21 [patent_title] => PUMP MONITORING SYSTEM AND METHOD [patent_app_type] => utility [patent_app_number] => 18/338903 [patent_app_country] => US [patent_app_date] => 2023-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7689 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 109 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18338903 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/338903
PUMP MONITORING SYSTEM AND METHOD Jun 20, 2023 Pending
Array ( [id] => 18940323 [patent_doc_number] => 20240035462 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => HYDRAULIC END ASSEMBLY STRUCTURE OF A PLUNGER PUMP [patent_app_type] => utility [patent_app_number] => 18/210652 [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] => 2002 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -2 [patent_words_short_claim] => 45 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18210652 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/210652
Hydraulic end assembly structure of a plunger pump Jun 15, 2023 Issued
Array ( [id] => 18903486 [patent_doc_number] => 20240018971 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-18 [patent_title] => FLUID PUMP [patent_app_type] => utility [patent_app_number] => 18/210249 [patent_app_country] => US [patent_app_date] => 2023-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7578 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [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] => 18210249 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/210249
FLUID PUMP Jun 14, 2023 Pending
Array ( [id] => 20493211 [patent_doc_number] => 12535077 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-27 [patent_title] => Electric compressor [patent_app_type] => utility [patent_app_number] => 18/331268 [patent_app_country] => US [patent_app_date] => 2023-06-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 1146 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18331268 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/331268
Electric compressor Jun 7, 2023 Issued
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