Search

John M. Hoffmann

Examiner (ID: 13343, Phone: (571)272-1191 , Office: P/1741 )

Most Active Art Unit
1731
Art Unit(s)
1741, 1303, 1731, 1791, 1712, 1304
Total Applications
1565
Issued Applications
722
Pending Applications
142
Abandoned Applications
703

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20289006 [patent_doc_number] => 20250314249 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-09 [patent_title] => PUMPS WITH CERAMIC INTERFACES AND RELATED METHODS [patent_app_type] => utility [patent_app_number] => 18/630639 [patent_app_country] => US [patent_app_date] => 2024-04-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9349 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18630639 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/630639
PUMPS WITH CERAMIC INTERFACES AND RELATED METHODS Apr 8, 2024 Pending
Array ( [id] => 19940942 [patent_doc_number] => 12313066 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-27 [patent_title] => Methods and systems for lubricating a transport climate control system having an auxiliary sump [patent_app_type] => utility [patent_app_number] => 18/629253 [patent_app_country] => US [patent_app_date] => 2024-04-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 3618 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18629253 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/629253
Methods and systems for lubricating a transport climate control system having an auxiliary sump Apr 7, 2024 Issued
Array ( [id] => 20194285 [patent_doc_number] => 20250270995 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-28 [patent_title] => ELECTRIC COMPRESSOR WITH PASSIVE PRESSURE SYSTEM BETWEEN HIGH AND LOW PRESSURE REGIONS [patent_app_type] => utility [patent_app_number] => 18/623186 [patent_app_country] => US [patent_app_date] => 2024-04-01 [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] => -14 [patent_words_short_claim] => 237 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18623186 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/623186
ELECTRIC COMPRESSOR WITH PASSIVE PRESSURE SYSTEM BETWEEN HIGH AND LOW PRESSURE REGIONS Mar 31, 2024 Pending
Array ( [id] => 20445818 [patent_doc_number] => 20260002535 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-01 [patent_title] => CHECK VALVE AND SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/880372 [patent_app_country] => US [patent_app_date] => 2024-04-01 [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] => -8 [patent_words_short_claim] => 321 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18880372 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/880372
Check valve and scroll compressor Mar 31, 2024 Issued
Array ( [id] => 19361597 [patent_doc_number] => 20240263631 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-08 [patent_title] => COMPRESSOR UNIT AND REFRIGERATION APPARATUS [patent_app_type] => utility [patent_app_number] => 18/612559 [patent_app_country] => US [patent_app_date] => 2024-03-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6230 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18612559 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/612559
Compressor unit and refrigeration apparatus with reduced vibrations Mar 20, 2024 Issued
Array ( [id] => 19923560 [patent_doc_number] => 12297832 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-13 [patent_title] => Compressor with chromium nitride and titanium nitride layers [patent_app_type] => utility [patent_app_number] => 18/591117 [patent_app_country] => US [patent_app_date] => 2024-02-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18591117 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/591117
Compressor with chromium nitride and titanium nitride layers Feb 28, 2024 Issued
Array ( [id] => 19856141 [patent_doc_number] => 12258966 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-25 [patent_title] => Rotary compressor with vane support portion to suppress or prevent axial vane tilting [patent_app_type] => utility [patent_app_number] => 18/443400 [patent_app_country] => US [patent_app_date] => 2024-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 19 [patent_no_of_words] => 17027 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 329 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18443400 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/443400
Rotary compressor with vane support portion to suppress or prevent axial vane tilting Feb 15, 2024 Issued
Array ( [id] => 19319092 [patent_doc_number] => 20240240635 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-18 [patent_title] => PUMP AND METHOD [patent_app_type] => utility [patent_app_number] => 18/434078 [patent_app_country] => US [patent_app_date] => 2024-02-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 19136 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -29 [patent_words_short_claim] => 210 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18434078 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/434078
Pump and method to attenuate pulses at the discharge Feb 5, 2024 Issued
Array ( [id] => 20439237 [patent_doc_number] => 12510067 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-12-30 [patent_title] => Tube pump with protruding part to prevent movement of the tube into the gears [patent_app_type] => utility [patent_app_number] => 18/429037 [patent_app_country] => US [patent_app_date] => 2024-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 2206 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 323 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18429037 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/429037
Tube pump with protruding part to prevent movement of the tube into the gears Jan 30, 2024 Issued
Array ( [id] => 19984379 [patent_doc_number] => 20250122601 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-17 [patent_title] => CAM RING AND PLATE MODULE FOR VEHICLE VACUUM PUMPS, AND METHOD OF MANUFACTURING THE SAME [patent_app_type] => utility [patent_app_number] => 18/422722 [patent_app_country] => US [patent_app_date] => 2024-01-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 763 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 61 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18422722 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/422722
Cam ring and plate module for vehicle vacuum pumps, and method of manufacturing the same Jan 24, 2024 Issued
Array ( [id] => 19158522 [patent_doc_number] => 20240151229 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => SCROLL MACHINE AND VEHICLE AIR-CONDITIONING SYSTEM [patent_app_type] => utility [patent_app_number] => 18/415173 [patent_app_country] => US [patent_app_date] => 2024-01-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7115 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 18415173 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/415173
SCROLL MACHINE AND VEHICLE AIR-CONDITIONING SYSTEM Jan 16, 2024 Abandoned
Array ( [id] => 19346025 [patent_doc_number] => 20240254988 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-01 [patent_title] => Gear Pump [patent_app_type] => utility [patent_app_number] => 18/412562 [patent_app_country] => US [patent_app_date] => 2024-01-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4254 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 18412562 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/412562
Gear Pump Jan 13, 2024 Abandoned
Array ( [id] => 20094017 [patent_doc_number] => 20250223953 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => Inflator with Upper Cover Showing Pressure Value [patent_app_type] => utility [patent_app_number] => 18/405158 [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] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 193 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18405158 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/405158
Inflator with upper cover showing pressure value Jan 4, 2024 Issued
Array ( [id] => 19572595 [patent_doc_number] => 20240376887 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-14 [patent_title] => VALVE MONITORING SYSTEM FOR A BELLOWS PUMP [patent_app_type] => utility [patent_app_number] => 18/398905 [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] => 24913 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18398905 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/398905
Valve monitoring system for a bellows pump Dec 27, 2023 Issued
Array ( [id] => 19113573 [patent_doc_number] => 20240125323 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-18 [patent_title] => PUMP CONFIGURATION INCLUDING A PURGE VALVE FOR REMOVING AIRLOCKS [patent_app_type] => utility [patent_app_number] => 18/394395 [patent_app_country] => US [patent_app_date] => 2023-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6729 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [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] => 18394395 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/394395
Pump configuration including a purge valve for removing airlocks Dec 21, 2023 Issued
Array ( [id] => 19098579 [patent_doc_number] => 20240117807 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-11 [patent_title] => ELECTRIC COMPRESSOR WITH ISOLATION CONSTRAINT SYSTEM [patent_app_type] => utility [patent_app_number] => 18/541959 [patent_app_country] => US [patent_app_date] => 2023-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11664 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 351 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18541959 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/541959
Electric compressor with isolation constraint system Dec 14, 2023 Issued
Array ( [id] => 19083763 [patent_doc_number] => 20240110564 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-04 [patent_title] => ROTARY PISTON COMPRESSOR/PUMP/BLOWER WITH A VENTILATION CHANNEL [patent_app_type] => utility [patent_app_number] => 18/539474 [patent_app_country] => US [patent_app_date] => 2023-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4356 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 18539474 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/539474
Rotary piston compressor/pump/blower with a ventilation channel Dec 13, 2023 Issued
Array ( [id] => 19301253 [patent_doc_number] => 20240229824 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-11 [patent_title] => CENTRIFUGAL BLOWER [patent_app_type] => utility [patent_app_number] => 18/532688 [patent_app_country] => US [patent_app_date] => 2023-12-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3121 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -1 [patent_words_short_claim] => 240 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18532688 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/532688
Centrifugal blower Dec 6, 2023 Issued
Array ( [id] => 19068047 [patent_doc_number] => 20240102473 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-28 [patent_title] => COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/520046 [patent_app_country] => US [patent_app_date] => 2023-11-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4410 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18520046 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/520046
COMPRESSOR Nov 26, 2023 Pending
Array ( [id] => 19923559 [patent_doc_number] => 12297831 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-05-13 [patent_title] => Parallel connected multiple shaft roots vacuum pump [patent_app_type] => utility [patent_app_number] => 18/386254 [patent_app_country] => US [patent_app_date] => 2023-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 0 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18386254 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/386254
Parallel connected multiple shaft roots vacuum pump Nov 1, 2023 Issued
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