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] => 17386468 [patent_doc_number] => 20220034320 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-03 [patent_title] => DUAL-CYLINDER TWO-STAGE VARIABLE CPACITY COMPRESSOR [patent_app_type] => utility [patent_app_number] => 17/059294 [patent_app_country] => US [patent_app_date] => 2019-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3724 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17059294 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/059294
Dual-cylinder two-stage variable cpacity compressor Dec 26, 2019 Issued
Array ( [id] => 16074311 [patent_doc_number] => 20200191142 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-18 [patent_title] => OIL PUMP [patent_app_type] => utility [patent_app_number] => 16/712043 [patent_app_country] => US [patent_app_date] => 2019-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11250 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16712043 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/712043
OIL PUMP Dec 11, 2019 Abandoned
Array ( [id] => 18140097 [patent_doc_number] => 20230013936 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-19 [patent_title] => SCREW PUMP OR MACHINE [patent_app_type] => utility [patent_app_number] => 17/783893 [patent_app_country] => US [patent_app_date] => 2019-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6503 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 17783893 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/783893
Screw pump or machine with a liner that bends and/or pivots with the rotors Dec 9, 2019 Issued
Array ( [id] => 17860412 [patent_doc_number] => 11441564 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-09-13 [patent_title] => Driving structure of three-axis multi-stage roots pump [patent_app_type] => utility [patent_app_number] => 16/706691 [patent_app_country] => US [patent_app_date] => 2019-12-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 4689 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 493 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16706691 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/706691
Driving structure of three-axis multi-stage roots pump Dec 6, 2019 Issued
Array ( [id] => 18576198 [patent_doc_number] => 11732716 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-22 [patent_title] => Modular compressor discharge system [patent_app_type] => utility [patent_app_number] => 17/253826 [patent_app_country] => US [patent_app_date] => 2019-12-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 11 [patent_no_of_words] => 2725 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17253826 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/253826
Modular compressor discharge system Dec 5, 2019 Issued
Array ( [id] => 19275005 [patent_doc_number] => 12025125 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-02 [patent_title] => Scroll compressor having sealed-oil interception structure [patent_app_type] => utility [patent_app_number] => 17/298473 [patent_app_country] => US [patent_app_date] => 2019-10-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 16 [patent_no_of_words] => 7995 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 236 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17298473 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/298473
Scroll compressor having sealed-oil interception structure Oct 30, 2019 Issued
Array ( [id] => 17344464 [patent_doc_number] => 20220010795 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-13 [patent_title] => VANE PUMP [patent_app_type] => utility [patent_app_number] => 17/283668 [patent_app_country] => US [patent_app_date] => 2019-10-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11041 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17283668 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/283668
Vane pump with tip-end-side guide surfaces provided between inner and outer notches of the discharge port and base-end-side guide surface provided in the back pressure port Oct 28, 2019 Issued
Array ( [id] => 18275060 [patent_doc_number] => 11613995 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-28 [patent_title] => Rotary engine with housing having silicon carbide plate [patent_app_type] => utility [patent_app_number] => 16/665428 [patent_app_country] => US [patent_app_date] => 2019-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 4799 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16665428 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/665428
Rotary engine with housing having silicon carbide plate Oct 27, 2019 Issued
Array ( [id] => 17336786 [patent_doc_number] => 20220003117 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-06 [patent_title] => Rotary Piston Machine and Method for Producing a Seal in a Rotary Piston Machine [patent_app_type] => utility [patent_app_number] => 17/281249 [patent_app_country] => US [patent_app_date] => 2019-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4530 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [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] => 17281249 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/281249
Rotary Piston Machine and Method for Producing a Seal in a Rotary Piston Machine Oct 13, 2019 Abandoned
Array ( [id] => 19521786 [patent_doc_number] => 12123499 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-22 [patent_title] => Methods and systems for sealing rotating equipment such as expanders or compressors [patent_app_type] => utility [patent_app_number] => 16/572441 [patent_app_country] => US [patent_app_date] => 2019-09-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 28 [patent_figures_cnt] => 29 [patent_no_of_words] => 21100 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 220 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16572441 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/572441
Methods and systems for sealing rotating equipment such as expanders or compressors Sep 15, 2019 Issued
Array ( [id] => 17823277 [patent_doc_number] => 11428221 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-30 [patent_title] => Gerotor pump and method of making pressure equalization in a gerotor pump [patent_app_type] => utility [patent_app_number] => 16/570128 [patent_app_country] => US [patent_app_date] => 2019-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 2428 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 222 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16570128 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/570128
Gerotor pump and method of making pressure equalization in a gerotor pump Sep 12, 2019 Issued
Array ( [id] => 15269107 [patent_doc_number] => 20190383287 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-12-19 [patent_title] => OPTIMIZED HELIX ANGLE ROTORS FOR ROOTS-STYLE SUPERCHARGER [patent_app_type] => utility [patent_app_number] => 16/556510 [patent_app_country] => US [patent_app_date] => 2019-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7167 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 66 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16556510 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/556510
Optimized helix angle rotors for roots-style supercharger Aug 29, 2019 Issued
Array ( [id] => 17068053 [patent_doc_number] => 20210270268 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-02 [patent_title] => PUMP BODY ASSEMBLY AND COMPRESSOR WITH PUMP BODY ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/254378 [patent_app_country] => US [patent_app_date] => 2019-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8018 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 122 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17254378 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/254378
Oil supply to the back pressure groove of a vane pump Aug 21, 2019 Issued
Array ( [id] => 16415172 [patent_doc_number] => 10823052 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-11-03 [patent_title] => Geared turbofan engine with targeted modular efficiency [patent_app_type] => utility [patent_app_number] => 16/531704 [patent_app_country] => US [patent_app_date] => 2019-08-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 3903 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16531704 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/531704
Geared turbofan engine with targeted modular efficiency Aug 4, 2019 Issued
Array ( [id] => 15900025 [patent_doc_number] => 20200149531 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-05-14 [patent_title] => VANE ROTARY COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/528716 [patent_app_country] => US [patent_app_date] => 2019-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10861 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 251 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16528716 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/528716
Vane rotary compressor having a bearing with back pressure pockets Jul 31, 2019 Issued
Array ( [id] => 15409751 [patent_doc_number] => 20200025197 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-23 [patent_title] => SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/513841 [patent_app_country] => US [patent_app_date] => 2019-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6814 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 206 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16513841 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/513841
Scroll compressor with buffer member between the orbiting groove and the balance weight Jul 16, 2019 Issued
Array ( [id] => 18888413 [patent_doc_number] => 11867179 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-09 [patent_title] => Fluid transfer apparatus with a plurality of rotor housings arranged at different angularity with the neighboring rotor housings [patent_app_type] => utility [patent_app_number] => 17/257097 [patent_app_country] => US [patent_app_date] => 2019-07-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 17 [patent_no_of_words] => 18034 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 265 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17257097 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/257097
Fluid transfer apparatus with a plurality of rotor housings arranged at different angularity with the neighboring rotor housings Jul 2, 2019 Issued
Array ( [id] => 15437211 [patent_doc_number] => 20200032789 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-30 [patent_title] => OIL PUMP [patent_app_type] => utility [patent_app_number] => 16/502210 [patent_app_country] => US [patent_app_date] => 2019-07-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16306 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16502210 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/502210
OIL PUMP Jul 2, 2019 Abandoned
Array ( [id] => 16113001 [patent_doc_number] => 20200208523 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-07-02 [patent_title] => SCREW COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/458181 [patent_app_country] => US [patent_app_date] => 2019-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1512 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 195 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16458181 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/458181
SCREW COMPRESSOR Jun 29, 2019 Abandoned
Array ( [id] => 15024999 [patent_doc_number] => 20190323504 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-10-24 [patent_title] => POLYMERIC COMPOSITE INSERT COMPONENT FOR A SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/435033 [patent_app_country] => US [patent_app_date] => 2019-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12609 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 182 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16435033 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/435033
Polymeric composite insert component for a scroll compressor Jun 6, 2019 Issued
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