Assignee
NIHON VALQUA KOGYO KK
JP·48 granted patents·8 pending applications·754 citations·filing 1981–2018
Top patents by PatentIndex Score
56 records- 0197USD633991SGate valve sealNIHON VALQUA KOGYO KK·Filed 2009·Granted Mar 8, 2011·87 cites·1 claims
- 0296US7866669B2Composite sealing materialNIHON VALQUA KOGYO KK·Filed 2005·Granted Jan 11, 2011·27 cites·12 claims
- 0394USD848585SSealNIHON VALQUA KOGYO KK·Filed 2018·Granted May 14, 2019·32 cites·1 claims
- 0493US9587744B2Sealing materialNIHON VALQUA KOGYO KK·Filed 2014·Granted Mar 7, 2017·16 cites·7 claims
- 0592USD822181SComposite sealNIHON VALQUA KOGYO KK·Filed 2017·Granted Jul 3, 2018·40 cites·1 claims
- 0692US7306237B2Sealing material for ant grooveNIHON VALQUA KOGYO KK·Filed 2004·Granted Dec 11, 2007·41 cites·9 claims
- 0790US10675847B2Adhesive composition, and seal structure body and method for manufacturing the sameNIHON VALQUA KOGYO KK·Filed 2016·Granted Jun 9, 2020·4 cites·7 claims
- 0890USD819187SSealNIHON VALQUA KOGYO KK·Filed 2016·Granted May 29, 2018·25 cites·1 claims
- 0989US7896354B2Composite sealing materialNIHON VALQUA KOGYO KK·Filed 2007·Granted Mar 1, 2011·14 cites·9 claims
- 1088USD849211SSealNIHON VALQUA KOGYO KK·Filed 2018·Granted May 21, 2019·19 cites·1 claims
- 1188US9611940B2Gate valveNIHON VALQUA KOGYO KK·Filed 2012·Granted Apr 4, 2017·16 cites·5 claims
- 1287USD864361SSealNIHON VALQUA KOGYO KK·Filed 2018·Granted Oct 22, 2019·26 cites·1 claims
- 1387US9892945B2Composite sealNIHON VALQUA KOGYO KK·Filed 2013·Granted Feb 13, 2018·9 cites·5 claims
- 1485USD848586SSealNIHON VALQUA KOGYO KK·Filed 2018·Granted May 14, 2019·16 cites·1 claims
- 1584USD836186SSeal member for a pressure vesselNIHON VALQUA KOGYO KK·Filed 2017·Granted Dec 18, 2018·23 cites·1 claims
- 1684USD754308SComposite sealing materialNIHON VALQUA KOGYO KK·Filed 2013·Granted Apr 19, 2016·30 cites·1 claims
- 1783USD821552SComposite sealNIHON VALQUA KOGYO KK·Filed 2017·Granted Jun 26, 2018·24 cites·1 claims
- 1883USD818089SComposite sealNIHON VALQUA KOGYO KK·Filed 2017·Granted May 15, 2018·19 cites·1 claims
- 1982US8029635B2Method for forming porous PTFE layerNIHON VALQUA KOGYO KK·Filed 2011·Granted Oct 4, 2011·3 cites·3 claims
- 2080US8912278B2Thermally conductive resin composition and thermally conductive sheet including the sameNIHON VALQUA KOGYO KK·Filed 2013·Granted Dec 16, 2014·6 cites·5 claims
- 2180US4950530AClutch facingNIHON VALQUA KOGYO KK·Filed 1988·Granted Aug 21, 1990·29 cites·10 claims
- 2279US10907736B2Split seal ringNIHON VALQUA KOGYO KK·Filed 2017·Granted Feb 2, 2021·4 cites·4 claims
- 2378USD865920SSeal member for a pressure vesselNIHON VALQUA KOGYO KK·Filed 2018·Granted Nov 5, 2019·16 cites·1 claims
- 2477US4401885APlanar heat generating deviceNIHON VALQUA KOGYO KK·Filed 1981·Granted Aug 30, 1983·30 cites·7 claims
- 2575US7236348B2Functional sheet having reinforcing materialNIHON VALQUA KOGYO KK·Filed 2003·Granted Jun 26, 2007·34 cites·18 claims
- 2667US7011312B2Gland packing and sealing apparatus comprising itNIHON VALQUA KOGYO KK·Filed 2002·Granted Mar 14, 2006·13 cites·17 claims
- 2766US4707314AProcess for producing polytetrafluoroethylene porous filmsNIHON VALQUA KOGYO KK·Filed 1985·Granted Nov 17, 1987·34 cites·5 claims
- 2865USD877865SSealNIHON VALQUA KOGYO KK·Filed 2017·Granted Mar 10, 2020·9 cites·1 claims
- 2965US4605527AProcess for producing clutch facingsNIHON VALQUA KOGYO KK·Filed 1984·Granted Aug 12, 1986·17 cites·9 claims
- 3062US5110526AProcess for producing molded articles of polytetrafluoroethylene resinNIHON VALQUA KOGYO KK·Filed 1989·Granted May 5, 1992·28 cites·16 claims
- 3162US2018112045A1Thermoplastic fluororesin composition and method for producing cross-linked bodyNIHON VALQUA KOGYO KK·Filed 2016·Application pending·0 cites
- 3261USD942596SSeal materialNIHON VALQUA KOGYO KK·Filed 2016·Granted Feb 1, 2022·8 cites·1 claims
- 3361US8349965B2Fluororubber composition capable of forming crack-resistant seal and crack-resistant seal formed from the compositionNIHON VALQUA KOGYO KK·Filed 2009·Granted Jan 8, 2013·1 cites·10 claims
- 3460US7867351B2Method for forming porous PTFE layerNIHON VALQUA KOGYO KK·Filed 2007·Granted Jan 11, 2011·0 cites·4 claims
- 3557US7326488B2Diffusion film, electrode having the diffusion film, and process for producing diffusion filmNIHON VALQUA KOGYO KK·Filed 2002·Granted Feb 5, 2008·7 cites·7 claims
- 3657US7004474B2Seal for an endless trackNIHON VALQUA KOGYO KK·Filed 2003·Granted Feb 28, 2006·9 cites·8 claims
- 3756US9908980B2Fluorine rubber composition, crosslinked rubber molded body and method for producing sameNIHON VALQUA KOGYO KK·Filed 2014·Granted Mar 6, 2018·0 cites·10 claims
- 3853US11118045B2Perfluoroelastomer composition and sealing materialNIHON VALQUA KOGYO KK·Filed 2017·Granted Sep 14, 2021·0 cites·3 claims
- 3952US10998488B2Piezoelectric stackNIHON VALQUA KOGYO KK·Filed 2013·Granted May 4, 2021·0 cites·9 claims
- 4052US10373768B2Method for producing electrode film for electric double layer capacitorsNIHON VALQUA KOGYO KK·Filed 2014·Granted Aug 6, 2019·0 cites·2 claims
- 4152US9859064B2Method for producing activated carbon sheet and method for improving impregnation of activated carbon sheet with electrolyte solutionNIHON VALQUA KOGYO KK·Filed 2014·Granted Jan 2, 2018·1 cites·12 claims
- 4251US11015096B2Perfluoroelastomer composition and sealing materialNIHON VALQUA KOGYO KK·Filed 2017·Granted May 25, 2021·0 cites·3 claims
- 4347US9688896B2Thermally conductive resin composition and thermally conductive sheet including the sameNIHON VALQUA KOGYO KK·Filed 2014·Granted Jun 27, 2017·0 cites·6 claims
- 4445US4710331AProcess for the production of polytetrafluoroethylene porous membranesNIHON VALQUA KOGYO KK·Filed 1986·Granted Dec 1, 1987·19 cites·6 claims
- 4545US2008153986A1Rubber Composition and Sealing Material for Plasma Treatment DeviceNIHON VALQUA KOGYO KK·Filed 2005·Application pending·0 cites
- 4644US9441107B2Shaped product suppressed in bleeding and production process thereforNIHON VALQUA KOGYO KK·Filed 2013·Granted Sep 13, 2016·0 cites·20 claims
- 4743US7270875B2Gland packingNIHON VALQUA KOGYO KK·Filed 2003·Granted Sep 18, 2007·3 cites·2 claims
- 4842US9890498B2Hydrophilic sheet and process for producing the sameNIHON VALQUA KOGYO KK·Filed 2013·Granted Feb 13, 2018·0 cites·15 claims
- 4942US2009189107A1Valve deviceNIHON VALQUA KOGYO KK·Filed 2009·Application pending·0 cites
- 5041US2016308231A1Composite film for electrochemical elementNIHON VALQUA KOGYO KK·Filed 2014·Application pending·0 cites
Showing the top 50 of 56 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when NIHON VALQUA KOGYO KK files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →