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] => 16453412 [patent_doc_number] => 20200362838 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-19 [patent_title] => ELECTRIC LINEAR-ACTUATOR PUMPING SYSTEM [patent_app_type] => utility [patent_app_number] => 16/854939 [patent_app_country] => US [patent_app_date] => 2020-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2754 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16854939 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/854939
ELECTRIC LINEAR-ACTUATOR PUMPING SYSTEM Apr 21, 2020 Abandoned
Array ( [id] => 17186138 [patent_doc_number] => 20210333023 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-28 [patent_title] => HEAT DISSIPATION ASSEMBLY FOR A LINEAR COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/855237 [patent_app_country] => US [patent_app_date] => 2020-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6724 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16855237 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/855237
Heat dissipation assembly for a linear compressor Apr 21, 2020 Issued
Array ( [id] => 17714087 [patent_doc_number] => 11378072 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-07-05 [patent_title] => Air compressor [patent_app_type] => utility [patent_app_number] => 16/845776 [patent_app_country] => US [patent_app_date] => 2020-04-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 13 [patent_no_of_words] => 8121 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16845776 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/845776
Air compressor Apr 9, 2020 Issued
Array ( [id] => 18244174 [patent_doc_number] => 20230076485 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-09 [patent_title] => COMPRESSOR [patent_app_type] => utility [patent_app_number] => 17/797749 [patent_app_country] => US [patent_app_date] => 2020-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13400 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 17797749 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/797749
Compressor Apr 1, 2020 Issued
Array ( [id] => 16658196 [patent_doc_number] => 20210054832 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-25 [patent_title] => LINEAR COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/836039 [patent_app_country] => US [patent_app_date] => 2020-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9378 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16836039 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/836039
Linear compressor Mar 30, 2020 Issued
Array ( [id] => 16445514 [patent_doc_number] => 10837432 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-11-17 [patent_title] => Tabletop inflation system [patent_app_type] => utility [patent_app_number] => 16/826173 [patent_app_country] => US [patent_app_date] => 2020-03-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 3855 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 183 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16826173 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/826173
Tabletop inflation system Mar 20, 2020 Issued
Array ( [id] => 20214147 [patent_doc_number] => 12410793 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-09 [patent_title] => Pump with variable suction/discharge amount and drive device composed of the pump and driving method thereof [patent_app_type] => utility [patent_app_number] => 17/906703 [patent_app_country] => US [patent_app_date] => 2020-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 22 [patent_no_of_words] => 5597 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 355 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17906703 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/906703
Pump with variable suction/discharge amount and drive device composed of the pump and driving method thereof Mar 19, 2020 Issued
Array ( [id] => 17082874 [patent_doc_number] => 20210277880 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-09 [patent_title] => LINEAR ACTUATOR PUMPING SYSTEM [patent_app_type] => utility [patent_app_number] => 16/812934 [patent_app_country] => US [patent_app_date] => 2020-03-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3389 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 49 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16812934 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/812934
Linear actuator pumping system Mar 8, 2020 Issued
Array ( [id] => 17657894 [patent_doc_number] => 20220178359 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-06-09 [patent_title] => HYBRID THERMODYNAMIC COMPRESSOR [patent_app_type] => utility [patent_app_number] => 17/436346 [patent_app_country] => US [patent_app_date] => 2020-03-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5656 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 244 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17436346 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/436346
Hybrid thermodynamic compressor Mar 5, 2020 Issued
Array ( [id] => 18045475 [patent_doc_number] => 11519417 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-12-06 [patent_title] => Water heater blower housing, impeller, and static tap system [patent_app_type] => utility [patent_app_number] => 16/799164 [patent_app_country] => US [patent_app_date] => 2020-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 17 [patent_no_of_words] => 5141 [patent_no_of_claims] => 29 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 276 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16799164 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/799164
Water heater blower housing, impeller, and static tap system Feb 23, 2020 Issued
Array ( [id] => 16453417 [patent_doc_number] => 20200362843 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-19 [patent_title] => ELECTRIC COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/794980 [patent_app_country] => US [patent_app_date] => 2020-02-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14918 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16794980 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/794980
ELECTRIC COMPRESSOR Feb 18, 2020 Abandoned
Array ( [id] => 19312190 [patent_doc_number] => 12037994 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-16 [patent_title] => Reciprocating compressor [patent_app_type] => utility [patent_app_number] => 17/602067 [patent_app_country] => US [patent_app_date] => 2020-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 8696 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17602067 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/602067
Reciprocating compressor Feb 9, 2020 Issued
Array ( [id] => 18103056 [patent_doc_number] => 11542937 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-03 [patent_title] => Tube pump system and method for controlling the tube pump system [patent_app_type] => utility [patent_app_number] => 16/786407 [patent_app_country] => US [patent_app_date] => 2020-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 22 [patent_no_of_words] => 13605 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 423 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16786407 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/786407
Tube pump system and method for controlling the tube pump system Feb 9, 2020 Issued
Array ( [id] => 15995127 [patent_doc_number] => 20200173434 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-04 [patent_title] => AIR COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/786009 [patent_app_country] => US [patent_app_date] => 2020-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10339 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [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] => 16786009 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/786009
Air compressor Feb 9, 2020 Issued
Array ( [id] => 16557974 [patent_doc_number] => 20210003122 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-07 [patent_title] => LINEAR COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/780564 [patent_app_country] => US [patent_app_date] => 2020-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15607 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16780564 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/780564
Linear compressor Feb 2, 2020 Issued
Array ( [id] => 16223579 [patent_doc_number] => 20200248696 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-06 [patent_title] => PUMP HAVING MAGNETS FOR JOURNALING AND MAGNETICALLY AXIALLY POSITIONING ROTOR THEREOF, AND RELATED METHODS [patent_app_type] => utility [patent_app_number] => 16/779944 [patent_app_country] => US [patent_app_date] => 2020-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10333 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16779944 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/779944
Pump having magnets for journaling and magnetically axially positioning rotor thereof, and related methods Feb 2, 2020 Issued
Array ( [id] => 16223563 [patent_doc_number] => 20200248680 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-06 [patent_title] => DOUBLE HYDRAULIC ACTIVATED RECEPTACLE PUMP [patent_app_type] => utility [patent_app_number] => 16/779237 [patent_app_country] => US [patent_app_date] => 2020-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4042 [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] => 16779237 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/779237
DOUBLE HYDRAULIC ACTIVATED RECEPTACLE PUMP Jan 30, 2020 Abandoned
Array ( [id] => 16254309 [patent_doc_number] => 20200263683 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-20 [patent_title] => DIAGNOSTIC APPARATUS FOR FUEL PUMP [patent_app_type] => utility [patent_app_number] => 16/775618 [patent_app_country] => US [patent_app_date] => 2020-01-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9025 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [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] => 16775618 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/775618
Diagnostic apparatus for fuel pump Jan 28, 2020 Issued
Array ( [id] => 18910835 [patent_doc_number] => 11873808 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-16 [patent_title] => Method for controlling the start-up of an oil pump [patent_app_type] => utility [patent_app_number] => 17/432309 [patent_app_country] => US [patent_app_date] => 2020-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2377 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17432309 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/432309
Method for controlling the start-up of an oil pump Jan 27, 2020 Issued
Array ( [id] => 18068680 [patent_doc_number] => 20220399768 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-15 [patent_title] => ROTOR, MOTOR, PUMP, REFRIGERATION CYCLE APPARATUS, AND MANUFACTURING METHOD OF ROTOR [patent_app_type] => utility [patent_app_number] => 17/776681 [patent_app_country] => US [patent_app_date] => 2020-01-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12380 [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] => 17776681 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/776681
ROTOR, MOTOR, PUMP, REFRIGERATION CYCLE APPARATUS, AND MANUFACTURING METHOD OF ROTOR Jan 23, 2020 Abandoned
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