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] => 19083764 [patent_doc_number] => 20240110565 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-04 [patent_title] => Rotor Assembly, Compressor and Air Conditioner [patent_app_type] => utility [patent_app_number] => 18/267978 [patent_app_country] => US [patent_app_date] => 2021-10-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8293 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 18267978 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/267978
Rotor assembly, compressor and air conditioner Oct 18, 2021 Issued
Array ( [id] => 18896003 [patent_doc_number] => 20240011488 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-11 [patent_title] => SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/251994 [patent_app_country] => US [patent_app_date] => 2021-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5868 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 260 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18251994 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/251994
SCROLL COMPRESSOR Oct 14, 2021 Abandoned
Array ( [id] => 18290266 [patent_doc_number] => 11619133 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-04-04 [patent_title] => Rotational engine with inner and outer rings [patent_app_type] => utility [patent_app_number] => 17/489241 [patent_app_country] => US [patent_app_date] => 2021-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 11 [patent_no_of_words] => 11899 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 264 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17489241 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/489241
Rotational engine with inner and outer rings Sep 28, 2021 Issued
Array ( [id] => 17563849 [patent_doc_number] => 20220127998 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-28 [patent_title] => SINGLE CHAMBER MULTIPLE INDEPENDENT CONTOUR ROTARY MACHINE [patent_app_type] => utility [patent_app_number] => 17/488858 [patent_app_country] => US [patent_app_date] => 2021-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8156 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 328 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17488858 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/488858
SINGLE CHAMBER MULTIPLE INDEPENDENT CONTOUR ROTARY MACHINE Sep 28, 2021 Abandoned
Array ( [id] => 17315423 [patent_doc_number] => 20210404471 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-30 [patent_title] => SCREW COMPRESSOR WITH OIL INJECTION AT MULTIPLE VOLUME RATIOS [patent_app_type] => utility [patent_app_number] => 17/474642 [patent_app_country] => US [patent_app_date] => 2021-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3691 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17474642 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/474642
Screw compressor with oil injection at multiple volume ratios Sep 13, 2021 Issued
Array ( [id] => 19529033 [patent_doc_number] => 20240352935 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-24 [patent_title] => COMPACT VARIABLE VOLUME INDEX VALVE FOR SCREW COMPRESSOR BACKGROUND [patent_app_type] => utility [patent_app_number] => 18/685493 [patent_app_country] => US [patent_app_date] => 2021-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4312 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18685493 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/685493
Compact variable volume index valve for screw compressor background Sep 9, 2021 Issued
Array ( [id] => 19181621 [patent_doc_number] => 11988205 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-05-21 [patent_title] => Pump-motor unit comprising an integrative housing cover [patent_app_type] => utility [patent_app_number] => 17/458814 [patent_app_country] => US [patent_app_date] => 2021-08-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 9121 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 367 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17458814 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/458814
Pump-motor unit comprising an integrative housing cover Aug 26, 2021 Issued
Array ( [id] => 19275003 [patent_doc_number] => 12025123 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-02 [patent_title] => Pump configuration including a purge valve for removing airlocks [patent_app_type] => utility [patent_app_number] => 17/404202 [patent_app_country] => US [patent_app_date] => 2021-08-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 16 [patent_no_of_words] => 6690 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17404202 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/404202
Pump configuration including a purge valve for removing airlocks Aug 16, 2021 Issued
Array ( [id] => 18818254 [patent_doc_number] => 20230392594 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-07 [patent_title] => CARTRIDGE SYSTEM AND ECCENTRIC SCREW PUMP [patent_app_type] => utility [patent_app_number] => 18/033026 [patent_app_country] => US [patent_app_date] => 2021-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13745 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18033026 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/033026
Cartridge system and eccentric screw pump Aug 10, 2021 Issued
Array ( [id] => 18629003 [patent_doc_number] => 20230287883 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-14 [patent_title] => INTERNAL GEAR FLUID MACHINE [patent_app_type] => utility [patent_app_number] => 18/017181 [patent_app_country] => US [patent_app_date] => 2021-07-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9874 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 199 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18017181 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/017181
Internal gear fluid machine with connection channel in each of two housing walls Jul 18, 2021 Issued
Array ( [id] => 18658500 [patent_doc_number] => 20230304496 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-28 [patent_title] => SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/004254 [patent_app_country] => US [patent_app_date] => 2021-07-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17310 [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] => 18004254 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/004254
Scroll compressor with Oldham ring and keys in orbiting scroll Jul 5, 2021 Issued
Array ( [id] => 19474519 [patent_doc_number] => 12104598 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-01 [patent_title] => Eccentric sliding assembly with a plurality of dynamic pressure generation mechanisms [patent_app_type] => utility [patent_app_number] => 18/012857 [patent_app_country] => US [patent_app_date] => 2021-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 15 [patent_no_of_words] => 7941 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 211 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18012857 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/012857
Eccentric sliding assembly with a plurality of dynamic pressure generation mechanisms Jun 30, 2021 Issued
Array ( [id] => 17315422 [patent_doc_number] => 20210404470 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-30 [patent_title] => AXIAL PRESSURE RELIEF IN SLIDE BEARINGS OF PUMPS [patent_app_type] => utility [patent_app_number] => 17/355553 [patent_app_country] => US [patent_app_date] => 2021-06-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8082 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [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] => 17355553 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/355553
Axial pressure relief in slide bearings of pumps Jun 22, 2021 Issued
Array ( [id] => 17315417 [patent_doc_number] => 20210404465 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-30 [patent_title] => MULTI-CHAMBER IMPELLER PUMP [patent_app_type] => utility [patent_app_number] => 17/352010 [patent_app_country] => US [patent_app_date] => 2021-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5785 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17352010 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/352010
Multi-chamber impeller pump Jun 17, 2021 Issued
Array ( [id] => 18512075 [patent_doc_number] => 20230228271 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => TWO-STAGE ROTARY VANE VACUUM PUMP CASING [patent_app_type] => utility [patent_app_number] => 18/002377 [patent_app_country] => US [patent_app_date] => 2021-06-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6017 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 14 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18002377 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/002377
TWO-STAGE ROTARY VANE VACUUM PUMP CASING Jun 16, 2021 Abandoned
Array ( [id] => 19354611 [patent_doc_number] => 12055042 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-08-06 [patent_title] => Screw expander with variable volume controlled by the pressure ratio, and plant for recovering electrical energy from heat with a screw expander [patent_app_type] => utility [patent_app_number] => 17/341035 [patent_app_country] => US [patent_app_date] => 2021-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 9291 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 515 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17341035 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/341035
Screw expander with variable volume controlled by the pressure ratio, and plant for recovering electrical energy from heat with a screw expander Jun 6, 2021 Issued
Array ( [id] => 18583586 [patent_doc_number] => 20230265847 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => Eccentric Screw Pump With A Modular Design [patent_app_type] => utility [patent_app_number] => 18/000760 [patent_app_country] => US [patent_app_date] => 2021-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3881 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 18000760 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/000760
Eccentric screw pump with a modular design with a compressible stator lining to adjust for wear and/or improve sealing May 31, 2021 Issued
Array ( [id] => 18436957 [patent_doc_number] => 20230184251 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-15 [patent_title] => SCROLL PUMP [patent_app_type] => utility [patent_app_number] => 17/999327 [patent_app_country] => US [patent_app_date] => 2021-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5500 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 158 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17999327 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/999327
Scroll pump with a plurality of bellows sealing a plurality of adjustment members May 19, 2021 Issued
Array ( [id] => 19166378 [patent_doc_number] => 11982273 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-05-14 [patent_title] => Vane pump with a notch provided at a suction port [patent_app_type] => utility [patent_app_number] => 17/904151 [patent_app_country] => US [patent_app_date] => 2021-04-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 5445 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [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] => 17904151 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/904151
Vane pump with a notch provided at a suction port Apr 18, 2021 Issued
Array ( [id] => 18355640 [patent_doc_number] => 11644034 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-09 [patent_title] => Complex screw rotors [patent_app_type] => utility [patent_app_number] => 17/229331 [patent_app_country] => US [patent_app_date] => 2021-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 31 [patent_figures_cnt] => 56 [patent_no_of_words] => 12790 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17229331 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/229331
Complex screw rotors Apr 12, 2021 Issued
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