Inventor · disambiguated record
Kenichi Tokunaga
Also filed as: TOKUNAGA KENICHI
6 granted patents·41 citations·filing 1996–2002
76Inventor score
Top patents by PatentIndex Score
6 records- 0181US5880309APhenylphosphonic acid derivative and production process thereforNISSAN CHEMICAL IND LTD·Filed 1998·Granted Mar 9, 1999·28 cites·9 claims
- 0264US6436594B2Electron-beam exposure method utilizing specific alignment mask selectionNEC CORP·Filed 2000·Granted Aug 20, 2002·12 cites·5 claims
- 0340US7038056B2Method for preparing a 7-quinolinyl-3,5-dihydroxyhept-6-enoateNISSAN CHEMICAL IND LTD·Filed 2002·Granted May 2, 2006·0 cites·6 claims
- 0433US6222074B1Process for preparation of 4,6-diaminoresorcinol or salts thereofNISSAN CHEMICAL IND LTD·Filed 1999·Granted Apr 24, 2001·1 cites·17 claims
- 0528US5847199ADerivative of phosphonic acid and process for the preparation thereofNISSAN CHEMICAL IND LTD·Filed 1997·Granted Dec 8, 1998·0 cites·5 claims
- 0626US5962740AProcesses for producing 4,6-bis (substituted)phenylazoresorcinolsNISSAN CHEMICAL IND LTD·Filed 1996·Granted Oct 5, 1999·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →