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] => 20563286 [patent_doc_number] => 12565890 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-03 [patent_title] => System and method for cleaning a liquid ring pump system [patent_app_type] => utility [patent_app_number] => 18/835236 [patent_app_country] => US [patent_app_date] => 2023-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 3554 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 219 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18835236 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/835236
System and method for cleaning a liquid ring pump system Feb 16, 2023 Issued
Array ( [id] => 19840614 [patent_doc_number] => 12252990 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-18 [patent_title] => Rotary combustion engine block sealing [patent_app_type] => utility [patent_app_number] => 18/110764 [patent_app_country] => US [patent_app_date] => 2023-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2628 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 230 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18110764 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/110764
Rotary combustion engine block sealing Feb 15, 2023 Issued
Array ( [id] => 19684861 [patent_doc_number] => 20250003406 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-02 [patent_title] => SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/576186 [patent_app_country] => US [patent_app_date] => 2023-02-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4945 [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] => 18576186 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/576186
Scroll compressor with adjusting mechanism for reducing swing of eccentric bush Feb 13, 2023 Issued
Array ( [id] => 20085940 [patent_doc_number] => 20250215876 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => CO-ROTATING SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/850421 [patent_app_country] => US [patent_app_date] => 2023-02-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3548 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -1 [patent_words_short_claim] => 460 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18850421 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/850421
CO-ROTATING SCROLL COMPRESSOR Feb 13, 2023 Pending
Array ( [id] => 18436953 [patent_doc_number] => 20230184247 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-15 [patent_title] => BEARING STRUCTURE FOR GEAR IN EXTERNAL GEAR PUMP [patent_app_type] => utility [patent_app_number] => 18/164884 [patent_app_country] => US [patent_app_date] => 2023-02-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7000 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 141 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18164884 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/164884
BEARING STRUCTURE FOR GEAR IN EXTERNAL GEAR PUMP Feb 5, 2023 Abandoned
Array ( [id] => 18733852 [patent_doc_number] => 11802576 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-10-31 [patent_title] => Fan device and fan frame with a buffer [patent_app_type] => utility [patent_app_number] => 18/097981 [patent_app_country] => US [patent_app_date] => 2023-01-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1918 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18097981 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/097981
Fan device and fan frame with a buffer Jan 16, 2023 Issued
Array ( [id] => 18871748 [patent_doc_number] => 11859538 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-02 [patent_title] => Geared turbofan engine with targeted modular efficiency [patent_app_type] => utility [patent_app_number] => 18/096872 [patent_app_country] => US [patent_app_date] => 2023-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 3948 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18096872 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/096872
Geared turbofan engine with targeted modular efficiency Jan 12, 2023 Issued
Array ( [id] => 19292091 [patent_doc_number] => 12031440 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-09 [patent_title] => Accumulator fixing device for compressor and compressor having the same [patent_app_type] => utility [patent_app_number] => 18/152389 [patent_app_country] => US [patent_app_date] => 2023-01-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 12676 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [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] => 18152389 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/152389
Accumulator fixing device for compressor and compressor having the same Jan 9, 2023 Issued
Array ( [id] => 19801337 [patent_doc_number] => 20250067262 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-27 [patent_title] => SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/725475 [patent_app_country] => US [patent_app_date] => 2022-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9470 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -42 [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] => 18725475 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/725475
SCROLL COMPRESSOR Dec 28, 2022 Pending
Array ( [id] => 19833058 [patent_doc_number] => 20250084844 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => DRIVE MEMBER FOR SCROLL COMPRESSOR, AND SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/725937 [patent_app_country] => US [patent_app_date] => 2022-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9647 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -35 [patent_words_short_claim] => 98 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18725937 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/725937
DRIVE MEMBER FOR SCROLL COMPRESSOR, AND SCROLL COMPRESSOR Dec 28, 2022 Pending
Array ( [id] => 19770815 [patent_doc_number] => 20250052241 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-13 [patent_title] => VACUUM PUMP WITH REDUCED SEAL REQUIREMENTS [patent_app_type] => utility [patent_app_number] => 18/721793 [patent_app_country] => US [patent_app_date] => 2022-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6394 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 18721793 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/721793
Vacuum pump with reduced seal requirements Dec 15, 2022 Issued
Array ( [id] => 20008264 [patent_doc_number] => 20250146486 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-08 [patent_title] => METHOD FOR CONTROLLING A FIRST REFERENCE TEMPERATURE IN A DEVICE FOR COMPRESSING GAS [patent_app_type] => utility [patent_app_number] => 18/730107 [patent_app_country] => US [patent_app_date] => 2022-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5531 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -25 [patent_words_short_claim] => 269 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18730107 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/730107
Method for controlling a first reference temperature in a device for compressing gas Dec 13, 2022 Issued
Array ( [id] => 18285139 [patent_doc_number] => 20230100611 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-30 [patent_title] => SCROLL COMPRESSOR WITH RECESSES AND PROTRUSIONS [patent_app_type] => utility [patent_app_number] => 18/072811 [patent_app_country] => US [patent_app_date] => 2022-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5701 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18072811 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/072811
SCROLL COMPRESSOR WITH RECESSES AND PROTRUSIONS Nov 30, 2022 Abandoned
Array ( [id] => 18266868 [patent_doc_number] => 20230088110 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-23 [patent_title] => SCROLL COMPRESSOR WITH RECESSES AND PROTRUSIONS [patent_app_type] => utility [patent_app_number] => 18/072795 [patent_app_country] => US [patent_app_date] => 2022-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5687 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 18072795 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/072795
SCROLL COMPRESSOR WITH RECESSES AND PROTRUSIONS Nov 30, 2022 Abandoned
Array ( [id] => 19474514 [patent_doc_number] => 12104593 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-01 [patent_title] => Scroll compressor of an electrical refrigerant drive and electrical refrigerant drive [patent_app_type] => utility [patent_app_number] => 17/986099 [patent_app_country] => US [patent_app_date] => 2022-11-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 16 [patent_no_of_words] => 12769 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 240 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17986099 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/986099
Scroll compressor of an electrical refrigerant drive and electrical refrigerant drive Nov 13, 2022 Issued
Array ( [id] => 19984652 [patent_doc_number] => 20250122874 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-17 [patent_title] => SCROLL COMPRESSOR AND METHOD FOR PRODUCING ECCENTRIC BUSH NECESSARY FOR SCROLL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/567869 [patent_app_country] => US [patent_app_date] => 2022-10-28 [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] => -13 [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] => 18567869 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/567869
SCROLL COMPRESSOR AND METHOD FOR PRODUCING ECCENTRIC BUSH NECESSARY FOR SCROLL COMPRESSOR Oct 27, 2022 Abandoned
Array ( [id] => 18445003 [patent_doc_number] => 11680564 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-06-20 [patent_title] => Hydraulic gear pump with radial pressure compensator [patent_app_type] => utility [patent_app_number] => 17/968998 [patent_app_country] => US [patent_app_date] => 2022-10-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 7553 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17968998 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/968998
Hydraulic gear pump with radial pressure compensator Oct 18, 2022 Issued
Array ( [id] => 19755217 [patent_doc_number] => 20250043782 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-06 [patent_title] => LIQUID FEEDING SYSTEM OF COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/710763 [patent_app_country] => US [patent_app_date] => 2022-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7173 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 57 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18710763 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/710763
LIQUID FEEDING SYSTEM OF COMPRESSOR Oct 10, 2022 Pending
Array ( [id] => 19977795 [patent_doc_number] => 12345262 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-01 [patent_title] => Non-lubricated compressor with abradable sealing element and related method for assembling it [patent_app_type] => utility [patent_app_number] => 18/698478 [patent_app_country] => US [patent_app_date] => 2022-10-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 0 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [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] => 18698478 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/698478
Non-lubricated compressor with abradable sealing element and related method for assembling it Oct 4, 2022 Issued
Array ( [id] => 18298461 [patent_doc_number] => 20230108147 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-04-06 [patent_title] => FLOW CHANNELING STRUCTURE [patent_app_type] => utility [patent_app_number] => 17/957430 [patent_app_country] => US [patent_app_date] => 2022-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7036 [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] => 17957430 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/957430
Flow channeling structure Sep 29, 2022 Issued
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