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] => 18013914 [patent_doc_number] => 11506200 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-11-22 [patent_title] => Hydraulic gear pump with radial pressure compensator [patent_app_type] => utility [patent_app_number] => 16/951480 [patent_app_country] => US [patent_app_date] => 2020-11-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 7525 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16951480 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/951480
Hydraulic gear pump with radial pressure compensator Nov 17, 2020 Issued
Array ( [id] => 17714094 [patent_doc_number] => 11378079 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-07-05 [patent_title] => Rotary vane compressor with a step in the bearing adjacent the rail groove [patent_app_type] => utility [patent_app_number] => 17/099943 [patent_app_country] => US [patent_app_date] => 2020-11-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 9516 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17099943 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/099943
Rotary vane compressor with a step in the bearing adjacent the rail groove Nov 16, 2020 Issued
Array ( [id] => 19211237 [patent_doc_number] => 12000287 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-06-04 [patent_title] => External combustion rotary engine [patent_app_type] => utility [patent_app_number] => 18/024275 [patent_app_country] => US [patent_app_date] => 2020-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 13 [patent_no_of_words] => 3297 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 780 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18024275 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/024275
External combustion rotary engine Nov 12, 2020 Issued
Array ( [id] => 16840346 [patent_doc_number] => 20210148358 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-20 [patent_title] => SEALED DRIVE FOR CONNECTING PROGRESSIVE CAVITY PUMP ROTORS TO UNIVERSAL JOINTS [patent_app_type] => utility [patent_app_number] => 17/092583 [patent_app_country] => US [patent_app_date] => 2020-11-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1447 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17092583 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/092583
Sealed drive for connecting progressive cavity pump rotors to universal joints Nov 8, 2020 Issued
Array ( [id] => 16948908 [patent_doc_number] => 20210207599 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-08 [patent_title] => Hydraulic Motor with Anti-Cogging Features [patent_app_type] => utility [patent_app_number] => 17/076902 [patent_app_country] => US [patent_app_date] => 2020-10-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7733 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17076902 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/076902
Hydraulic motor with anti-cogging features Oct 21, 2020 Issued
Array ( [id] => 19717944 [patent_doc_number] => 12203473 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-21 [patent_title] => Filter-and-throttle unit for a scroll compressor, and scroll compressor for a refrigerant circuit [patent_app_type] => utility [patent_app_number] => 18/030777 [patent_app_country] => US [patent_app_date] => 2020-10-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4643 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18030777 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/030777
Filter-and-throttle unit for a scroll compressor, and scroll compressor for a refrigerant circuit Oct 7, 2020 Issued
Array ( [id] => 19227300 [patent_doc_number] => 12006934 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-06-11 [patent_title] => Scroll compressor and refrigeration cycle apparatus [patent_app_type] => utility [patent_app_number] => 18/006194 [patent_app_country] => US [patent_app_date] => 2020-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 19 [patent_no_of_words] => 12981 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 243 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18006194 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/006194
Scroll compressor and refrigeration cycle apparatus Sep 30, 2020 Issued
Array ( [id] => 18996622 [patent_doc_number] => 11913456 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-02-27 [patent_title] => Rotary vane compressor with residual refrigerant removal [patent_app_type] => utility [patent_app_number] => 17/060646 [patent_app_country] => US [patent_app_date] => 2020-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 17 [patent_no_of_words] => 10256 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 165 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17060646 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/060646
Rotary vane compressor with residual refrigerant removal Sep 30, 2020 Issued
Array ( [id] => 16576017 [patent_doc_number] => 20210010418 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-14 [patent_title] => GEARED TURBOFAN ENGINE WITH TARGETED MODULAR EFFICIENCY [patent_app_type] => utility [patent_app_number] => 17/038608 [patent_app_country] => US [patent_app_date] => 2020-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3920 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17038608 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/038608
Geared turbofan engine with targeted modular efficiency Sep 29, 2020 Issued
Array ( [id] => 18932922 [patent_doc_number] => 11885330 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-30 [patent_title] => Two-cylinder rotary compressor with mufflers [patent_app_type] => utility [patent_app_number] => 17/801370 [patent_app_country] => US [patent_app_date] => 2020-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 9914 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 961 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17801370 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/801370
Two-cylinder rotary compressor with mufflers Sep 29, 2020 Issued
Array ( [id] => 19918897 [patent_doc_number] => 12294282 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-06 [patent_title] => Motor and vacuum cleaner [patent_app_type] => utility [patent_app_number] => 17/771342 [patent_app_country] => US [patent_app_date] => 2020-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 449 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17771342 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/771342
Motor and vacuum cleaner Sep 3, 2020 Issued
Array ( [id] => 17867933 [patent_doc_number] => 20220290669 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-15 [patent_title] => PUMP BODY ASSEMBLY, HEAT EXCHANGE APPARATUS, FLUID MACHINE AND OPERATING METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 17/639888 [patent_app_country] => US [patent_app_date] => 2020-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5594 [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] => 17639888 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/639888
Pump body assembly, heat exchange apparatus, fluid machine and operating method thereof Aug 23, 2020 Issued
Array ( [id] => 16658205 [patent_doc_number] => 20210054841 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-25 [patent_title] => MULTI-STAGE DRY ROOTS VACUUM PUMP [patent_app_type] => utility [patent_app_number] => 16/945254 [patent_app_country] => US [patent_app_date] => 2020-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5188 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 16945254 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/945254
Multi-stage dry roots vacuum pump Jul 30, 2020 Issued
Array ( [id] => 18552811 [patent_doc_number] => 20230250822 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-10 [patent_title] => A COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/003202 [patent_app_country] => US [patent_app_date] => 2020-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5022 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [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] => 18003202 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/003202
Compressor with a suction valve having a spring, a seal, and a cylindrical suction valve body Jul 30, 2020 Issued
Array ( [id] => 17830971 [patent_doc_number] => 20220268275 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-25 [patent_title] => POSITIVE DISPLACEMENT PUMP SHAFT BEARING ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/628733 [patent_app_country] => US [patent_app_date] => 2020-07-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2460 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17628733 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/628733
POSITIVE DISPLACEMENT PUMP SHAFT BEARING ASSEMBLY Jul 28, 2020 Abandoned
Array ( [id] => 16583582 [patent_doc_number] => 20210017984 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-21 [patent_title] => ROTARY COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/931163 [patent_app_country] => US [patent_app_date] => 2020-07-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7336 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 220 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16931163 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/931163
Rotary compressor with a vane discharge-sided groove and a vane suction-sided groove Jul 15, 2020 Issued
Array ( [id] => 18103061 [patent_doc_number] => 11542942 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-03 [patent_title] => Dynamic radial compliance in scroll compressors [patent_app_type] => utility [patent_app_number] => 16/922277 [patent_app_country] => US [patent_app_date] => 2020-07-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 24 [patent_no_of_words] => 11900 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 158 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16922277 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/922277
Dynamic radial compliance in scroll compressors Jul 6, 2020 Issued
Array ( [id] => 17968880 [patent_doc_number] => 11486398 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-01 [patent_title] => Rotary compressor with selective oil communication [patent_app_type] => utility [patent_app_number] => 16/921087 [patent_app_country] => US [patent_app_date] => 2020-07-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 17 [patent_no_of_words] => 11486 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 378 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16921087 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/921087
Rotary compressor with selective oil communication Jul 5, 2020 Issued
Array ( [id] => 17808241 [patent_doc_number] => 20220260076 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-18 [patent_title] => ORBITING SCROLL PLATE DRIVING ASSEMBLY AND SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 17/620626 [patent_app_country] => US [patent_app_date] => 2020-06-30 [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] => -14 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17620626 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/620626
Orbiting scroll plate driving assembly and scroll compressor Jun 29, 2020 Issued
Array ( [id] => 19113571 [patent_doc_number] => 20240125321 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-18 [patent_title] => UNIAXIAL ECCENTRIC SCREW PUMP [patent_app_type] => utility [patent_app_number] => 17/641768 [patent_app_country] => US [patent_app_date] => 2020-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8178 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 17641768 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/641768
Uniaxial eccentric screw pump with radial adjustment of the stator Jun 28, 2020 Issued
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