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] => 18512072 [patent_doc_number] => 20230228268 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => COMPRESSOR [patent_app_type] => utility [patent_app_number] => 18/009833 [patent_app_country] => US [patent_app_date] => 2020-06-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3408 [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] => 18009833 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/009833
Helical compressor with internal bearings Jun 9, 2020 Issued
Array ( [id] => 16598858 [patent_doc_number] => 20210025389 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-28 [patent_title] => ROTARY COMPPRESOR [patent_app_type] => utility [patent_app_number] => 16/880158 [patent_app_country] => US [patent_app_date] => 2020-05-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12197 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 202 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16880158 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/880158
Rotary compressor with roller oil groove May 20, 2020 Issued
Array ( [id] => 16269504 [patent_doc_number] => 20200270991 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-27 [patent_title] => Rotary Engine Rotor [patent_app_type] => utility [patent_app_number] => 15/930849 [patent_app_country] => US [patent_app_date] => 2020-05-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4222 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15930849 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/930849
Rotary engine rotor with lip and a recess on the flank May 12, 2020 Issued
Array ( [id] => 16239077 [patent_doc_number] => 20200256311 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-08-13 [patent_title] => Load Balanced Power Section of Progressing Cavity Device [patent_app_type] => utility [patent_app_number] => 16/860185 [patent_app_country] => US [patent_app_date] => 2020-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10573 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 265 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16860185 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/860185
Load balanced power section of progressing cavity device Apr 27, 2020 Issued
Array ( [id] => 16399620 [patent_doc_number] => 20200340478 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-29 [patent_title] => VANE PUMP WITH IMPROVED SEAL ASSEMBLY FOR CONTROL CHAMBER [patent_app_type] => utility [patent_app_number] => 16/850718 [patent_app_country] => US [patent_app_date] => 2020-04-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2833 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 332 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16850718 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/850718
Vane pump with improved seal assembly for control chamber Apr 15, 2020 Issued
Array ( [id] => 16453434 [patent_doc_number] => 20200362860 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-19 [patent_title] => COMPACT DUAL-SECTION GEAR PUMP [patent_app_type] => utility [patent_app_number] => 16/844156 [patent_app_country] => US [patent_app_date] => 2020-04-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6555 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 16844156 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/844156
Compact dual-section gear pump Apr 8, 2020 Issued
Array ( [id] => 16453431 [patent_doc_number] => 20200362857 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-19 [patent_title] => ROTARY COMPRESSOR [patent_app_type] => utility [patent_app_number] => 16/838285 [patent_app_country] => US [patent_app_date] => 2020-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11603 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16838285 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/838285
Rotary compressor with wear avoiding portion Apr 1, 2020 Issued
Array ( [id] => 16712770 [patent_doc_number] => 20210079917 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-18 [patent_title] => GEAR PUMP AND GEAR MOTOR [patent_app_type] => utility [patent_app_number] => 16/835321 [patent_app_country] => US [patent_app_date] => 2020-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2664 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 49 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16835321 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/835321
GEAR PUMP AND GEAR MOTOR Mar 30, 2020 Abandoned
Array ( [id] => 16158177 [patent_doc_number] => 20200217321 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-07-09 [patent_title] => THERMAL AND SOUND OPTIMIZED LATTICE-CORED ADDITIVE MANUFACTURED COMPRESSOR COMPONENTS [patent_app_type] => utility [patent_app_number] => 16/819415 [patent_app_country] => US [patent_app_date] => 2020-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16519 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16819415 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/819415
Thermal and sound optimized lattice-cored additive manufactured compressor components Mar 15, 2020 Issued
Array ( [id] => 18013048 [patent_doc_number] => 11505327 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-22 [patent_title] => Gas delivery augmenter with pump mechanism [patent_app_type] => utility [patent_app_number] => 16/820059 [patent_app_country] => US [patent_app_date] => 2020-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 4042 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16820059 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/820059
Gas delivery augmenter with pump mechanism Mar 15, 2020 Issued
Array ( [id] => 17208320 [patent_doc_number] => 11168683 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-11-09 [patent_title] => Pressure balancing system for a fluid pump [patent_app_type] => utility [patent_app_number] => 16/817049 [patent_app_country] => US [patent_app_date] => 2020-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 4689 [patent_no_of_claims] => 7 [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] => 16817049 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/817049
Pressure balancing system for a fluid pump Mar 11, 2020 Issued
Array ( [id] => 18135138 [patent_doc_number] => 11560795 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-24 [patent_title] => Scroll compressor with asymmetrical Oldham's ring [patent_app_type] => utility [patent_app_number] => 16/817041 [patent_app_country] => US [patent_app_date] => 2020-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 11 [patent_no_of_words] => 14173 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 225 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16817041 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/817041
Scroll compressor with asymmetrical Oldham's ring Mar 11, 2020 Issued
Array ( [id] => 17596308 [patent_doc_number] => 20220145882 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-12 [patent_title] => PROGRESSING CAVITY DEVICES AND ASSEMBLIES FOR COUPLING MULTIPLE STAGES OF PROGRESSING CAVITY DEVICES [patent_app_type] => utility [patent_app_number] => 17/438019 [patent_app_country] => US [patent_app_date] => 2020-03-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16613 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17438019 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/438019
Progressing cavity devices and assemblies for coupling multiple stages of progressing cavity devices Mar 9, 2020 Issued
Array ( [id] => 18605329 [patent_doc_number] => 11746786 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-09-05 [patent_title] => Lubricant receptacle [patent_app_type] => utility [patent_app_number] => 17/438170 [patent_app_country] => US [patent_app_date] => 2020-03-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 5063 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17438170 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/438170
Lubricant receptacle Mar 9, 2020 Issued
Array ( [id] => 19609279 [patent_doc_number] => 12158147 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-12-03 [patent_title] => Slide valve of a single screw compressor [patent_app_type] => utility [patent_app_number] => 17/431709 [patent_app_country] => US [patent_app_date] => 2020-02-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 1003 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 349 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17431709 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/431709
Slide valve of a single screw compressor Feb 19, 2020 Issued
Array ( [id] => 19312199 [patent_doc_number] => 12038004 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-16 [patent_title] => Positive displacement pump with bearings, a keying device, and gears [patent_app_type] => utility [patent_app_number] => 17/759241 [patent_app_country] => US [patent_app_date] => 2020-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 9568 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 563 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17759241 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/759241
Positive displacement pump with bearings, a keying device, and gears Feb 11, 2020 Issued
Array ( [id] => 17023027 [patent_doc_number] => 20210246898 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-12 [patent_title] => PUMP ASSEMBLY [patent_app_type] => utility [patent_app_number] => 16/784502 [patent_app_country] => US [patent_app_date] => 2020-02-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4881 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16784502 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/784502
Pump assembly with pump chambers located radially relative to one another and connected serially Feb 6, 2020 Issued
Array ( [id] => 18165536 [patent_doc_number] => 20230032135 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-02 [patent_title] => GEAR PUMP OR GEAR MOTOR [patent_app_type] => utility [patent_app_number] => 17/789335 [patent_app_country] => US [patent_app_date] => 2020-01-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4613 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 17789335 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/789335
Gear pump or motor with communication paths to suction and discharge in closed space between the drive and driven gears Jan 29, 2020 Issued
Array ( [id] => 17548938 [patent_doc_number] => 20220120279 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-21 [patent_title] => ROUGH-VACUUM PUMP OF DRY TYPE [patent_app_type] => utility [patent_app_number] => 17/427785 [patent_app_country] => US [patent_app_date] => 2020-01-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5137 [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] => 17427785 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/427785
ROUGH-VACUUM PUMP OF DRY TYPE Jan 21, 2020 Abandoned
Array ( [id] => 18261131 [patent_doc_number] => 11608828 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-21 [patent_title] => Rotary pump with axial compensation, outlet gasket for a pump and pre-fitted pump unit [patent_app_type] => utility [patent_app_number] => 17/416820 [patent_app_country] => US [patent_app_date] => 2019-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 16 [patent_no_of_words] => 24596 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 363 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17416820 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/416820
Rotary pump with axial compensation, outlet gasket for a pump and pre-fitted pump unit Dec 26, 2019 Issued
Menu