Inventor · disambiguated record
Tsutomu Watahiki
Also filed as: WATAHIKI TSUTOMU
12 granted patents·5 pending applications·26 citations·filing 2005–2021
85Inventor score
Files withOKAMOTO KUNIAKI5WAKO PURE CHEM IND LTD5WATAHIKI TSUTOMU2FUJIFILM CORP1FUJIFILM ELECTRONIC MAT CO LTD1
Top patents by PatentIndex Score
17 records- 0187US9190695B2Nonaqueous electrolyte solution, method for producing same, and nonaqueous electrolyte battery using the electrolyte solutionOKAMOTO KUNIAKI·Filed 2011·Granted Nov 17, 2015·9 cites·12 claims
- 0284US9257720B2Nonaqueous electrolyte solution and nonaqueous electrolyte battery using sameOKAMOTO KUNIAKI·Filed 2011·Granted Feb 9, 2016·6 cites·12 claims
- 0383US9862914B2Cleaning agent for semiconductor substrates and method for processing semiconductor substrate surfaceWAKO PURE CHEM IND LTD·Filed 2014·Granted Jan 9, 2018·7 cites·17 claims
- 0472US8546609B2Ionic liquid containing allylsulfonate anionWATAHIKI TSUTOMU·Filed 2010·Granted Oct 1, 2013·2 cites·6 claims
- 0572US8269038B2Process for production of sulfonic acid esterOKAMOTO KUNIAKI·Filed 2007·Granted Sep 18, 2012·1 cites·15 claims
- 0670US8716513B2Process for production of bis-quaternary ammonium salt, and novel intermediateOKAMOTO KUNIAKI·Filed 2010·Granted May 6, 2014·1 cites·5 claims
- 0762US8969591B2Method for producing cyclic sulfonic acid ester and intermediate thereofWAKO PURE CHEM IND LTD·Filed 2014·Granted Mar 3, 2015·0 cites·7 claims
- 0851US10439252B2Electrolyte solution for electrochemical device, and electrochemical deviceWAKO PURE CHEM IND LTD·Filed 2014·Granted Oct 8, 2019·0 cites·15 claims
- 0951US8742136B2Method for producing cyclic disulfonic acid esterOKAMOTO KUNIAKI·Filed 2007·Granted Jun 3, 2014·0 cites·3 claims
- 1051US8673963B2Method for producing cyclic sulfonic acid ester and intermediate thereofKURAMOTO AYAKO·Filed 2010·Granted Mar 18, 2014·0 cites·9 claims
- 1150US2015244028A1Nonaqueous secondary cell, and fire-retardant agent and additive for nonaqueous secondary cellSHARP KK·Filed 2013·Application pending·0 cites
- 1249US2021395645A1Cleaning liquidFUJIFILM ELECTRONIC MAT CO LTD·Filed 2021·Application pending·0 cites
- 1348US12312569B2Kit for cleaning agent and method for preparing cleaning agentFUJIFILM CORP·Filed 2021·Granted May 27, 2025·0 cites·13 claims
- 1443US2008045724A1Deuterated Polyimides and Derivatives ThereofWAKO PURE CHEM IND LTD·Filed 2005·Application pending·0 cites
- 1542US2016060584A1Cleaning agent for metal wiring substrate, and method for cleaning semiconductor substrateWAKO PURE CHEM IND LTD·Filed 2014·Application pending·0 cites
- 1641US9263767B2Electrolyte solution for electrochemical devicesWATAHIKI TSUTOMU·Filed 2012·Granted Feb 16, 2016·0 cites·10 claims
- 1740US2008214386A1Catalyst for Cyclic Carbonate SynthesisTAKAHASHI TOSHIKAZU·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →