Patents-Review.com
🔗 Permalink
Assignee profile:

TPR CO., LTD.

City:

TOKYO

Country:

Japan

Published Applications:

63

Last publication date:

2025-10-16

Patent Grants:

59

Last grant date:

2026-03-17

Top Inventors for applications by TPR CO., LTD.

These are the the leading inventors for applications assigned to TPR CO., LTD.:

Recent patent applications by TPR CO., LTD.

TPR CO., LTD. based in TOKYO, JP has been assigned the rights to these inventions. The list includes both Pending Applications and Patent Grants:

#1 | 2025-10-16 ✅ Patent 12,577,922 granted on 2026-03-17
US20250320843A1
Mechanical engineering

Cylinder

 #2 | 2025-06-12 ✅ Patent 12,607,155 granted on 2026-04-21
US20250188886A1
Mechanical engineering

CYLINDER LINER AND RECIPROCATING ENGINE COMPRISING CYLINDER LINER

 #3 | 2025-04-10 ✅ Patent 12,292,118 granted on 2025-05-06
US20250116331A1
Mechanical engineering

Piston ring

 #4 | 2025-04-03 ✅ Patent 12,392,301 granted on 2025-08-19
US20250109722A1
Mechanical engineering

Piston Unit, Top Land Member, and Combination of Piston Unit Parts

 #5 | 2024-09-12 ✅ Patent 12,521,788 granted on 2026-01-13
US20240300009A1
Performing operations; transporting

DRIP PREVENTION DEVICE FOR PRESSURIZED POURING FURNACE

 #6 | 2024-08-08 ✅ Patent 12,092,222 granted on 2024-09-17
US20240263700A1
Mechanical engineering

Piston ring combination, and internal combustion engine

 #7 | 2024-08-08 ✅ Patent 12,066,111 granted on 2024-08-20
US20240263699A1
Mechanical engineering

Piston ring

 #8 | 2024-06-13 ✅ Patent 12,049,689 granted on 2024-07-30
US20240191332A1
Chemistry; metallurgy

Iron-based sintered alloy valve seat

 #9 | 2024-05-02 ✅ Patent 12,173,799 granted on 2024-12-24
US20240141993A1
Mechanical engineering

Oil control ring

 #10 | 2024-04-04 ✅ Patent 12,196,325 granted on 2025-01-14
US20240110625A1
Mechanical engineering

Compression ring

 #11 | 2024-02-01 ✅ Patent 12,121,958 granted on 2024-10-22
US20240033815A1
Performing operations; transporting

Centrifugal casting mold and centrifugal casting mold assembly device

 #12 | 2024-01-04 ✅ Patent 12,058,937 granted on 2024-08-06
US20240008367A1
Electricity

Thermoelectric conversion module and structure for thermoelectric conversion element

 #13 | 2023-12-28 ✅ Patent 12,281,380 granted on 2025-04-22
US20230416903A1
Chemistry; metallurgy

CRN coating film and sliding member

 #14 | 2023-12-28 ✅ Patent 12,533,758 granted on 2026-01-27
US20230415283A1
Performing operations; transporting

Piston Ring Cutting-Off Device

 #15 | 2023-12-07 ✅ Patent 11,867,295 granted on 2024-01-09
US20230392688A1
Mechanical engineering

Sliding member

 #16 | 2023-12-07 ✅ Patent 11,867,294 granted on 2024-01-09
US20230392687A1
Mechanical engineering

Sliding member

 #17 | 2023-11-30 ✅ Patent 12,485,476 granted on 2025-12-02
US20230381855A1
Performing operations; transporting

CASTING SYSTEM

 #18 | 2023-11-23 ✅ Patent 12,629,756 granted on 2026-05-19
US20230373012A1
Performing operations; transporting

WORKPIECE RETAINING DEVICE

 #19 | 2023-11-23 ✅ Patent 12,397,343 granted on 2025-08-26
US20230372999A1
Performing operations; transporting

MOLD COOLING DEVICE, CAST MANUFACTURING SYSTEM, AND CAST MANUFACTURING METHOD

 #20 | 2023-11-09 ✅ Patent 12,000,491 granted on 2024-06-04
US20230358313A1
Mechanical engineering

Combination of piston rings, and combination structure of piston and piston rings

 #21 | 2023-08-31 ✅ Patent 12,117,084 granted on 2024-10-15
US20230272854A1
Mechanical engineering

Combination of piston rings, and combination structure of piston and piston rings

 #22 | 2023-06-22 ✅ Patent 12,116,951 granted on 2024-10-15
US20230193847A1
Mechanical engineering

Cylinder liner and cylinder bore

 #23 | 2023-04-27 ✅ Patent 11,686,226 granted on 2023-06-27
US20230127085A1
Mechanical engineering

Sintered alloy valve guide and method of producing sintered alloy valve guide

 #24 | 2022-11-24 ✅ Patent 11,680,537 granted on 2023-06-20
US20220372929A1
Mechanical engineering

Cylinder liner and cylinder bore

 #25 | 2022-09-29 ✅ Patent 12,305,590 granted on 2025-05-20
US20220307443A1
Mechanical engineering

Spiny liner and manufacturing method of same, and method of determining bonding strength

 #26 | 2022-07-07 ✅ Patent 11,460,073 granted on 2022-10-04
US20220213928A1
Mechanical engineering

Thrust washer

 #27 | 2022-05-12 ✅ Patent 11,603,929 granted on 2023-03-14
US20220145990A1
Mechanical engineering

Wire for piston ring, and manufacturing method of piston ring

 #28 | 2022-02-24 ✅ Patent 11,396,907 granted on 2022-07-26
US20220056949A1
Mechanical engineering

Thrust washer

 #29 | 2022-01-27 ✅ Patent 11,499,498 granted on 2022-11-15
US20220025829A1
Mechanical engineering

Cylinder liner and manufacturing method for same

 #30 | 2021-10-12 ✅ Patent 11,141,783 granted on 2021-10-12
US17246799
Performing operations; transporting

Cylinder liner for insert casting

 #31 | 2021-09-02 ✅ Patent 11,242,929 granted on 2022-02-08
US20210270370A1
Mechanical engineering

Piston ring

 #32 | 2021-06-03 ✅ Patent 11,320,049 granted on 2022-05-03
US20210164568A1
Mechanical engineering

Piston ring combination

 #33 | 2021-05-06 ✅ Patent 11,223,048 granted on 2022-01-11
US20210135226A1
Electricity

Binder

 #34 | 2020-12-24 ✅ Patent 11,168,642 granted on 2021-11-09
US20200398336A1
Performing operations; transporting

Cylinder liner for cast-covering, and method for manufacturing cylinder block

 #35 | 2020-12-17 ✅ Patent 10,907,570 granted on 2021-02-02
US20200392921A1
Mechanical engineering

Cylindrical member

 #36 | 2020-10-29 ✅ Patent 11,305,997 granted on 2022-04-19
US20200339421A1
Chemistry; metallurgy

Multi-walled carbon nanotube, multi-walled carbon nanotube aggregation, and method for producing the multiwalled carbon nanotube

 #37 | 2020-08-13
US20200256277A1
Mechanical engineering

CAST IRON CYLINDER LINER, AND INTERNAL COMBUSTION ENGINE

 #38 | 2020-08-06
US20200248284A1
Chemistry; metallurgy

POROUS METAL

 #39 | 2020-06-25 ✅ Patent 11,377,358 granted on 2022-07-05
US20200198979A1
Chemistry; metallurgy

Method for producing porous carbon material

 #40 | 2020-05-28 ✅ Patent 10,890,255 granted on 2021-01-12
US20200166135A1
Mechanical engineering

Combination oil ring

 #41 | 2020-05-28 ✅ Patent 11,951,547 granted on 2024-04-09
US20200165945A1
Mechanical engineering

Valve guide made of iron-based sintered alloy and method of producing same

 #42 | 2020-05-07
US20200141259A1
Mechanical engineering

METHOD FOR MANUFACTURING SUPERCHARGER COMPRESSOR HOUSING, AND SUPERCHARGER COMPRESSOR HOUSING

 #43 | 2020-02-27 ✅ Patent 10,876,494 granted on 2020-12-29
US20200063685A1
Mechanical engineering

Cylinder liner, block manufacturing method and cylinder liner manufacturing method

 #44 | 2020-02-27 ✅ Patent 11,047,333 granted on 2021-06-29
US20200063684A1
Mechanical engineering

Cylinder liner, block manufacturing method and cylinder liner manufacturing method

 #45 | 2019-11-28 ✅ Patent 10,571,024 granted on 2020-02-25
US20190360585A1
Mechanical engineering

Combination oil ring

 #46 | 2019-11-28 ✅ Patent 10,626,991 granted on 2020-04-21
US20190360584A1
Mechanical engineering

Segment, combination oil ring, and manufacturing method for a segment

 #47 | 2019-11-28 ✅ Patent 10,596,624 granted on 2020-03-24
US20190358701A1
Performing operations; transporting

Cast-iron cylindrical member and composite structure

 #48 | 2019-09-12 ✅ Patent 10,837,399 granted on 2020-11-17
US20190277220A1
Mechanical engineering

Method of manufacturing internal combustion engine, internal combustion engine, and connected cylinder

 #49 | 2019-04-04 ✅ Patent 10,636,581 granted on 2020-04-28
US20190103233A1
Electricity

Electric double layer capacitor

 #50 | 2019-03-28 ✅ Patent 10,428,407 granted on 2019-10-01
US20190093203A1
Chemistry; metallurgy

Cylindrical member made of flake graphite cast iron

 #51 | 2019-03-21 ✅ Patent 10,760,687 granted on 2020-09-01
US20190085981A1
Mechanical engineering

Seal ring and sealing device

 #52 | 2019-02-21 ✅ Patent 10,763,511 granted on 2020-09-01
US20190058197A1
Electricity

Method for producing porous graphite, and porous graphite

 #53 | 2019-02-07 ✅ Patent 10,510,493 granted on 2019-12-17
US20190043675A1
Electricity

Core-shell composite, method for producing the same, electrode material, catalyst, electrode, secondary battery, and electric double-layer capacitor

 #54 | 2019-02-07 ✅ Patent 10,451,185 granted on 2019-10-22
US20190040956A1
Mechanical engineering

Seal ring

 #55 | 2017-01-05 ✅ Patent 10,072,755 granted on 2018-09-11
US20170002926A1
Mechanical engineering

Combination oil ring

 #56 | 2017-01-05 ✅ Patent 9,845,873 granted on 2017-12-19
US20170002925A1
Mechanical engineering

Combination oil ring

 #57 | 2016-11-17 ✅ Patent 10,036,287 granted on 2018-07-31
US20160333456A1
Chemistry; metallurgy

Valve seat

 #58 | 2016-07-14 ✅ Patent 9,556,761 granted on 2017-01-31
US20160201527A1
Mechanical engineering

Valve seat

 #59 | 2015-04-02 ✅ Patent 9,416,434 granted on 2016-08-16
US20150093586A1
Chemistry; metallurgy

High-toughness coating film and sliding member

 #60 | 2015-02-19 ✅ Patent 9,581,056 granted on 2017-02-28
US20150047596A1
Mechanical engineering

Valve seat

 #61 | 2014-09-04 ✅ Patent 9,726,286 granted on 2017-08-08
US20140246834A1
Mechanical engineering

Combination oil ring

 #62 | 2013-08-08
US20130202233A1
Mechanical engineering

SUPPORT MEMBER

 #63 | 2011-09-15 ✅ Patent 9,458,933 granted on 2016-10-04
US20110221141A1
Mechanical engineering

Combination oil ring

Also check out TPR CO., LTD.'s (Tokyo, Japan) applicant profile with 54 patent applications submitted.

AssigneeID:

33583 ⎘