Assignee
TPR CO LTD
JP·53 granted patents·11 pending applications·66 citations·filing 2011–2024
Top patents by PatentIndex Score
64 records- 0194US9556761B2Valve seatTPR CO LTD·Filed 2013·Granted Jan 31, 2017·30 cites·5 claims
- 0287US9784369B2Combination oil ringTPR CO LTD·Filed 2015·Granted Oct 10, 2017·5 cites·6 claims
- 0386US11396907B2Thrust washerTPR CO LTD·Filed 2019·Granted Jul 26, 2022·6 cites·16 claims
- 0482US10760687B2Seal ring and sealing deviceTPR CO LTD·Filed 2017·Granted Sep 1, 2020·4 cites·10 claims
- 0580US10072755B2Combination oil ringTPR CO LTD·Filed 2016·Granted Sep 11, 2018·2 cites·3 claims
- 0680US9845873B2Combination oil ringTPR CO LTD·Filed 2016·Granted Dec 19, 2017·2 cites·4 claims
- 0779US11680537B2Cylinder liner and cylinder boreTPR CO LTD·Filed 2019·Granted Jun 20, 2023·1 cites·12 claims
- 0879US10510493B2Core-shell composite, method for producing the same, electrode material, catalyst, electrode, secondary battery, and electric double-layer capacitorTPR CO LTD·Filed 2017·Granted Dec 17, 2019·2 cites·16 claims
- 0977US10036287B2Valve seatTPR CO LTD·Filed 2016·Granted Jul 31, 2018·1 cites·6 claims
- 1076US12116951B2Cylinder liner and cylinder boreTPR CO LTD·Filed 2020·Granted Oct 15, 2024·1 cites·18 claims
- 1176US10890255B2Combination oil ringTPR CO LTD·Filed 2018·Granted Jan 12, 2021·4 cites·13 claims
- 1274US12049689B2Iron-based sintered alloy valve seatTPR CO LTD·Filed 2022·Granted Jul 30, 2024·0 cites·9 claims
- 1373US10571024B2Combination oil ringTPR CO LTD·Filed 2017·Granted Feb 25, 2020·3 cites·3 claims
- 1471US10636581B2Electric double layer capacitorTPR CO LTD·Filed 2016·Granted Apr 28, 2020·1 cites·11 claims
- 1571US10451185B2Seal ringTPR CO LTD·Filed 2016·Granted Oct 22, 2019·2 cites·4 claims
- 1671US2025001489A1Centrifugal casting mold and centrifugal casting mold assembly deviceTPR CO LTD·Filed 2024·Application pending·0 cites
- 1768US10907570B2Cylindrical memberTPR CO LTD·Filed 2018·Granted Feb 2, 2021·0 cites·12 claims
- 1867US12485476B2Casting systemTPR CO LTD·Filed 2023·Granted Dec 2, 2025·0 cites·10 claims
- 1966US11719138B2Sintered alloy valve guide and method of producing sintered alloy valve guideTPR CO LTD·Filed 2021·Granted Aug 8, 2023·0 cites·9 claims
- 2066US11168642B2Cylinder liner for cast-covering, and method for manufacturing cylinder blockTPR CO LTD·Filed 2018·Granted Nov 9, 2021·0 cites·8 claims
- 2166US2025113476A1Electromagnetic wave absorber and electromagnetic wave shielding compositeTPR CO LTD·Filed 2022·Application pending·0 cites
- 2265US12397343B2Mold cooling device, cast manufacturing system, and cast manufacturing methodTPR CO LTD·Filed 2023·Granted Aug 26, 2025·0 cites·6 claims
- 2365US11867295B2Sliding memberTPR CO LTD·Filed 2021·Granted Jan 9, 2024·0 cites·5 claims
- 2462US12577922B2CylinderTPR CO LTD·Filed 2022·Granted Mar 17, 2026·0 cites·10 claims
- 2562US9175771B2Piston ringTPR CO LTD·Filed 2015·Granted Nov 3, 2015·0 cites·5 claims
- 2661US11499498B2Cylinder liner and manufacturing method for sameTPR CO LTD·Filed 2019·Granted Nov 15, 2022·0 cites·19 claims
- 2761US11047333B2Cylinder liner, block manufacturing method and cylinder liner manufacturing methodTPR CO LTD·Filed 2019·Granted Jun 29, 2021·0 cites·6 claims
- 2860US12281380B2CRN coating film and sliding memberTPR CO LTD·Filed 2021·Granted Apr 22, 2025·0 cites·6 claims
- 2960US10876494B2Cylinder liner, block manufacturing method and cylinder liner manufacturing methodTPR CO LTD·Filed 2019·Granted Dec 29, 2020·0 cites·6 claims
- 3060US10428407B2Cylindrical member made of flake graphite cast ironTPR CO LTD·Filed 2016·Granted Oct 1, 2019·0 cites·20 claims
- 3159US11305997B2Multi-walled carbon nanotube, multi-walled carbon nanotube aggregation, and method for producing the multiwalled carbon nanotubeTPR CO LTD·Filed 2020·Granted Apr 19, 2022·0 cites·6 claims
- 3258US12121958B2Centrifugal casting mold and centrifugal casting mold assembly deviceTPR CO LTD·Filed 2020·Granted Oct 22, 2024·0 cites·3 claims
- 3357US12533758B2Piston ring cutting-off deviceTPR CO LTD·Filed 2021·Granted Jan 27, 2026·0 cites·6 claims
- 3457US11867294B2Sliding memberTPR CO LTD·Filed 2021·Granted Jan 9, 2024·0 cites·8 claims
- 3557US11242929B2Piston ringTPR CO LTD·Filed 2019·Granted Feb 8, 2022·0 cites·7 claims
- 3657US11223048B2BinderTPR CO LTD·Filed 2019·Granted Jan 11, 2022·0 cites·10 claims
- 3756US2026016274A1StylusTPR CO LTD·Filed 2024·Application pending·0 cites
- 3856US2020248284A1Porous metalTPR CO LTD·Filed 2019·Application pending·0 cites
- 3954US2023373012A1Workpiece retaining deviceTPR CO LTD·Filed 2020·Application pending·0 cites
- 4053US12392301B2Piston unit, top land member, and combination of piston unit partsTPR CO LTD·Filed 2023·Granted Aug 19, 2025·0 cites·7 claims
- 4152US11951547B2Valve guide made of iron-based sintered alloy and method of producing sameTPR CO LTD·Filed 2018·Granted Apr 9, 2024·0 cites·6 claims
- 4251US12521788B2Drip prevention device for pressurized pouring furnaceTPR CO LTD·Filed 2021·Granted Jan 13, 2026·0 cites·8 claims
- 4351US8365588B2Piston ring tension measurement apparatusTPR CO LTD·Filed 2011·Granted Feb 5, 2013·2 cites·4 claims
- 4448US2026002588A1Piston RingTPR CO LTD·Filed 2022·Application pending·0 cites
- 4547US10837399B2Method of manufacturing internal combustion engine, internal combustion engine, and connected cylinderTPR CO LTD·Filed 2017·Granted Nov 17, 2020·0 cites·12 claims
- 4647US2013202233A1Support memberTPR CO LTD·Filed 2013·Application pending·0 cites
- 4746US12196325B2Compression ringTPR CO LTD·Filed 2022·Granted Jan 14, 2025·0 cites·5 claims
- 4846US12066111B1Piston ringTPR CO LTD·Filed 2022·Granted Aug 20, 2024·0 cites·6 claims
- 4946US12058937B2Thermoelectric conversion module and structure for thermoelectric conversion elementTPR CO LTD·Filed 2023·Granted Aug 6, 2024·0 cites·9 claims
- 5046US10626991B2Segment, combination oil ring, and manufacturing method for a segmentTPR CO LTD·Filed 2017·Granted Apr 21, 2020·0 cites·12 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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