Inventor · disambiguated record
Ippei Nakagawa
Also filed as: NAKAGAWA IPPEI
26 granted patents·1 pending application·407 citations·filing 1988–2021
97Inventor score
Files withVALQUA LTD13NIHON VALQUA KOGYO KK7APPLIED MATERIALS INC3MITSUBISHI NUCLEAR FUEL3AGENCY IND SCIENCE TECHN1
Top patents by PatentIndex Score
27 records- 0198USD898170SComposite seal member for semiconductor production apparatusVALQUA LTD·Filed 2018·Granted Oct 6, 2020·12 cites·1 claims
- 0297USD633991SGate valve sealNIHON VALQUA KOGYO KK·Filed 2009·Granted Mar 8, 2011·87 cites·1 claims
- 0396USD933619SSeal member for semiconductor production apparatusVALQUA LTD·Filed 2020·Granted Oct 19, 2021·24 cites·1 claims
- 0492USD933033SSeal member for semiconductor production apparatusVALQUA LTD·Filed 2020·Granted Oct 12, 2021·13 cites·1 claims
- 0592USD909323SSeal member for use in semiconductor production apparatusVALQUA LTD·Filed 2019·Granted Feb 2, 2021·28 cites·1 claims
- 0692USD822181SComposite sealNIHON VALQUA KOGYO KK·Filed 2017·Granted Jul 3, 2018·40 cites·1 claims
- 0791USD933032SSeal member for semiconductor production apparatusVALQUA LTD·Filed 2020·Granted Oct 12, 2021·12 cites·1 claims
- 0890USD933031SSeal member for semiconductor production apparatusVALQUA LTD·Filed 2020·Granted Oct 12, 2021·11 cites·1 claims
- 0987USD909322SSeal member for use in semiconductor production apparatusVALQUA LTD·Filed 2019·Granted Feb 2, 2021·19 cites·1 claims
- 1087US9892945B2Composite sealNIHON VALQUA KOGYO KK·Filed 2013·Granted Feb 13, 2018·9 cites·5 claims
- 1185USD896353SComposite sealVALQUA LTD·Filed 2017·Granted Sep 15, 2020·20 cites·1 claims
- 1284USD917028SSealVALQUA LTD·Filed 2020·Granted Apr 20, 2021·8 cites·1 claims
- 1384USD754308SComposite sealing materialNIHON VALQUA KOGYO KK·Filed 2013·Granted Apr 19, 2016·30 cites·1 claims
- 1483US11231108B2Composite seal memberVALQUA LTD·Filed 2018·Granted Jan 25, 2022·3 cites·14 claims
- 1583USD821552SComposite sealNIHON VALQUA KOGYO KK·Filed 2017·Granted Jun 26, 2018·24 cites·1 claims
- 1681USD922027SComposite seal member for semiconductor production apparatusVALQUA LTD·Filed 2019·Granted Jun 15, 2021·1 cites·1 claims
- 1780US10943808B2Ceramic electrostatic chuck having a V-shape seal bandAPPLIED MATERIALS INC·Filed 2016·Granted Mar 9, 2021·2 cites·20 claims
- 1876USD901648SSealVALQUA LTD·Filed 2019·Granted Nov 10, 2020·12 cites·1 claims
- 1969USD922546SComposite seal member for semiconductor production apparatusVALQUA LTD·Filed 2019·Granted Jun 15, 2021·0 cites·1 claims
- 2067US4873073AMethod for production of bismuth (III) oxideAGENCY IND SCIENCE TECHN·Filed 1989·Granted Oct 10, 1989·21 cites·6 claims
- 2165USD877865SSealNIHON VALQUA KOGYO KK·Filed 2017·Granted Mar 10, 2020·9 cites·1 claims
- 2262US2021183680A1V-shape seal band for a semiconductor processing chamberAPPLIED MATERIALS INC·Filed 2021·Application pending·0 cites
- 2361USD942596SSeal materialNIHON VALQUA KOGYO KK·Filed 2016·Granted Feb 1, 2022·8 cites·1 claims
- 2448US11384838B2Seal memberAPPLIED MATERIALS INC·Filed 2017·Granted Jul 12, 2022·0 cites·19 claims
- 2546US4857155AProcess of separation of hafnium from zirconium by molten salt electrolysisMITSUBISHI NUCLEAR FUEL·Filed 1988·Granted Aug 15, 1989·5 cites·2 claims
- 2642US5009751AProcess for separation of hafnium tetrachloride from zirconium tetrachlorideMITSUBISHI NUCLEAR FUEL·Filed 1989·Granted Apr 23, 1991·5 cites·6 claims
- 2739US4925537AProcess for separation of hafnium tetrachloride from zirconium tetrachloride and electrodeMITSUBISHI NUCLEAR FUEL·Filed 1989·Granted May 15, 1990·4 cites·4 claims
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