Assignee
TEIKOKU PISTON RING CO LTD
JP·47 granted patents·4 pending applications·1,436 citations·filing 1975–2011
Top patents by PatentIndex Score
51 records- 0197US6325385B1Piston ringTEIKOKU PISTON RING CO LTD·Filed 1999·Granted Dec 4, 2001·116 cites·16 claims
- 0291US6951579B2Sintered alloy for valve seats, valve seat and manufacturing method thereofTEIKOKU PISTON RING CO LTD·Filed 2003·Granted Oct 4, 2005·44 cites·8 claims
- 0390US5148780ACylinder liner and method for manufacturing the sameTEIKOKU PISTON RING CO LTD·Filed 1991·Granted Sep 22, 1992·52 cites·3 claims
- 0489US5449547AHard coating material, sliding member coated with hard coating material and method for manufacturing sliding memberTEIKOKU PISTON RING CO LTD·Filed 1994·Granted Sep 12, 1995·62 cites·5 claims
- 0587US6372369B1Hard film, sliding member covered with hard film, and manufacturing method thereofTEIKOKU PISTON RING CO LTD·Filed 2000·Granted Apr 16, 2002·32 cites·9 claims
- 0687US4522412AOil ring with coil expanderTEIKOKU PISTON RING CO LTD·Filed 1984·Granted Jun 11, 1985·45 cites·12 claims
- 0785US6279913B1Sliding member and manufacturing method thereofTEIKOKU PISTON RING CO LTD·Filed 1999·Granted Aug 28, 2001·53 cites·5 claims
- 0884US6060182AHard coating material, sliding member covered with hard coating material and manufacturing method thereofTEIKOKU PISTON RING CO LTD·Filed 1998·Granted May 9, 2000·60 cites·6 claims
- 0984US5582414ASliding member and method for manufacturing the sameTEIKOKU PISTON RING CO LTD·Filed 1994·Granted Dec 10, 1996·54 cites·9 claims
- 1084US5154433APiston ringTEIKOKU PISTON RING CO LTD·Filed 1991·Granted Oct 13, 1992·55 cites·4 claims
- 1184US4021205ASintered powdered ferrous alloy article and process for producing the alloy articleTEIKOKU PISTON RING CO LTD·Filed 1976·Granted May 3, 1977·29 cites·7 claims
- 1283US5618590AProcess for manufacturing a piston ringTEIKOKU PISTON RING CO LTD·Filed 1995·Granted Apr 8, 1997·70 cites·8 claims
- 1382US6508473B1Piston ringTEIKOKU PISTON RING CO LTD·Filed 2000·Granted Jan 21, 2003·23 cites·16 claims
- 1482US5960762APiston ring and cylinder liner combinationTEIKOKU PISTON RING CO LTD·Filed 1997·Granted Oct 5, 1999·54 cites·6 claims
- 1582US5316321ANonferrous piston ring with hard surface treatment layerTEIKOKU PISTON RING CO LTD·Filed 1992·Granted May 31, 1994·56 cites·11 claims
- 1681US6142481APiston ringTEIKOKU PISTON RING CO LTD·Filed 1998·Granted Nov 7, 2000·41 cites·12 claims
- 1780US6139022APiston ringTEIKOKU PISTON RING CO LTD·Filed 1998·Granted Oct 31, 2000·49 cites·5 claims
- 1879US5820131APiston ring having wear coating consisting of Cr2 N or a mixture of Cr2 N and CrTEIKOKU PISTON RING CO LTD·Filed 1997·Granted Oct 13, 1998·39 cites·5 claims
- 1979US4046304AProcess for producing metal composite materialTEIKOKU PISTON RING CO LTD·Filed 1975·Granted Sep 6, 1977·31 cites·1 claims
- 2076US5207188ACylinder for multi-cylinder type engineTEIKOKU PISTON RING CO LTD·Filed 1991·Granted May 4, 1993·41 cites·8 claims
- 2175US5516560AMethod for coating rings, coating equipment and coating jigTEIKOKU PISTON RING CO LTD·Filed 1994·Granted May 14, 1996·44 cites·2 claims
- 2274US6149162ASliding memberTEIKOKU PISTON RING CO LTD·Filed 1998·Granted Nov 21, 2000·37 cites·20 claims
- 2373US5601293ASliding member with hard ternery filmTEIKOKU PISTON RING CO LTD·Filed 1995·Granted Feb 11, 1997·37 cites·3 claims
- 2472US5295696ACombined oil ringTEIKOKU PISTON RING CO LTD·Filed 1993·Granted Mar 22, 1994·41 cites·10 claims
- 2571US4891068AAdditive powders for coating materials or plasticsTEIKOKU PISTON RING CO LTD·Filed 1988·Granted Jan 2, 1990·20 cites·16 claims
- 2669US7963212B2Combination of a piston and a piston ringTEIKOKU PISTON RING CO LTD·Filed 2008·Granted Jun 21, 2011·3 cites·20 claims
- 2769US7077402B2Combined oil ringTEIKOKU PISTON RING CO LTD·Filed 2003·Granted Jul 18, 2006·16 cites·4 claims
- 2868US6454271B2Combined oil ringTEIKOKU PISTON RING CO LTD·Filed 2000·Granted Sep 24, 2002·13 cites·9 claims
- 2968US6054225AComposite chromium plating film and sliding member covered thereofTEIKOKU PISTON RING CO LTD·Filed 1997·Granted Apr 25, 2000·19 cites·6 claims
- 3067US5582144ADry cylinder liner for internal combustion enginesTEIKOKU PISTON RING CO LTD·Filed 1995·Granted Dec 10, 1996·20 cites·8 claims
- 3165US8365696B2Piston device for internal combustion enginesTEIKOKU PISTON RING CO LTD·Filed 2009·Granted Feb 5, 2013·4 cites·6 claims
- 3265US5718437ACombined oil ring with spacer/expander having Cr2 N coating thereonTEIKOKU PISTON RING CO LTD·Filed 1996·Granted Feb 17, 1998·25 cites·4 claims
- 3363US5241748AMethod for manufacturing a compression ringTEIKOKU PISTON RING CO LTD·Filed 1992·Granted Sep 7, 1993·23 cites·10 claims
- 3457US5469616AMethod of manufacturing a side rail of a combined oil ringTEIKOKU PISTON RING CO LTD·Filed 1994·Granted Nov 28, 1995·20 cites·2 claims
- 3552US4062741AMethod for maintaining an electrode and an article plated or to be plated immersed in an electrolytic chromium-plating bath in a normal conditionTEIKOKU PISTON RING CO LTD·Filed 1976·Granted Dec 13, 1977·8 cites·5 claims
- 3651US6158407ACylinder liner and method for its productionTEIKOKU PISTON RING CO LTD·Filed 1998·Granted Dec 12, 2000·11 cites·9 claims
- 3751US5013346AMethod of making additive powders for coating materials or plasticsTEIKOKU PISTON RING CO LTD·Filed 1989·Granted May 7, 1991·10 cites·24 claims
- 3851US2008007006A1Piston ring for internal combustion enginesTEIKOKU PISTON RING CO LTD·Filed 2007·Application pending·0 cites
- 3949US6013380AComposite chromium plating film and sliding member covered thereofTEIKOKU PISTON RING CO LTD·Filed 1997·Granted Jan 11, 2000·14 cites·4 claims
- 4049US5199390ACylinder linerTEIKOKU PISTON RING CO LTD·Filed 1992·Granted Apr 6, 1993·12 cites·8 claims
- 4149US2008122185A1Combined oil ringTEIKOKU PISTON RING CO LTD·Filed 2007·Application pending·0 cites
- 4245US5189992ACylinder linerTEIKOKU PISTON RING CO LTD·Filed 1992·Granted Mar 2, 1993·10 cites·10 claims
- 4341US2011232478A1Cylinder linerTEIKOKU PISTON RING CO LTD·Filed 2011·Application pending·0 cites
- 4439US5651553AAntirotation structure for combined oil ringTEIKOKU PISTON RING CO LTD·Filed 1996·Granted Jul 29, 1997·10 cites·8 claims
- 4539US5308089ACombined oil ringTEIKOKU PISTON RING CO LTD·Filed 1992·Granted May 3, 1994·9 cites·4 claims
- 4639US5070343APrinting head for resistive ribbon type printing apparatusTEIKOKU PISTON RING CO LTD·Filed 1991·Granted Dec 3, 1991·8 cites·5 claims
- 4738US5176113ACylinder linerTEIKOKU PISTON RING CO LTD·Filed 1992·Granted Jan 5, 1993·9 cites·7 claims
- 4833US4983992APrinting head for resistive ribbon type printing apparatusTEIKOKU PISTON RING CO LTD·Filed 1989·Granted Jan 8, 1991·4 cites·7 claims
- 4929US2002033579A1Piston ringTEIKOKU PISTON RING CO LTD·Filed 1999·Application pending·0 cites
- 5026US5840095AMethod and apparatus for producing flat metal powder directly from meltTEIKOKU PISTON RING CO LTD·Filed 1996·Granted Nov 24, 1998·1 cites·5 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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