Inventor · disambiguated record
Keiji Oono
Also filed as: OONO KEIJI
14 granted patents·612 citations·filing 1991–2004
94Inventor score
Files withWAKO PURE CHEM IND LTD14
Top patents by PatentIndex Score
14 records- 0197US5350660AChemical amplified resist material containing photosensitive compound capable of generating an acid and specific polystyrene copolymer having functional groups that become alkali-soluble under an acid atmosphereWAKO PURE CHEM IND LTD·Filed 1991·Granted Sep 27, 1994·210 cites·19 claims
- 0295US6723483B1Sulfonium salt compoundsWAKO PURE CHEM IND LTD·Filed 2000·Granted Apr 20, 2004·65 cites·34 claims
- 0381US5468589AResist material and pattern formation processWAKO PURE CHEM IND LTD·Filed 1992·Granted Nov 21, 1995·72 cites·10 claims
- 0476US5677112AProcess for forming a pattern on a semiconductor substrate using a deep ultraviolet absorbent compositionWAKO PURE CHEM IND LTD·Filed 1996·Granted Oct 14, 1997·44 cites·4 claims
- 0576US5670299APattern formation processWAKO PURE CHEM IND LTD·Filed 1995·Granted Sep 23, 1997·47 cites·18 claims
- 0676US5216135ADiazodisulfonesWAKO PURE CHEM IND LTD·Filed 1992·Granted Jun 1, 1993·25 cites·7 claims
- 0773US6033826APolymer and resist materialWAKO PURE CHEM IND LTD·Filed 1996·Granted Mar 7, 2000·33 cites·11 claims
- 0873US5976759APolymer composition and resist materialWAKO PURE CHEM IND LTD·Filed 1996·Granted Nov 2, 1999·44 cites·31 claims
- 0962US5627006AResist materialWAKO PURE CHEM IND LTD·Filed 1995·Granted May 6, 1997·22 cites·14 claims
- 1058US5576359ADeep ultraviolet absorbent compositionWAKO PURE CHEM IND LTD·Filed 1994·Granted Nov 19, 1996·23 cites·4 claims
- 1157US7618914B2Method for producing hydroxylamine compound using platinum catalyst fixed on ion-exchange resinWAKO PURE CHEM IND LTD·Filed 2004·Granted Nov 17, 2009·4 cites·14 claims
- 1254US5498748AAnthracene derivativesWAKO PURE CHEM IND LTD·Filed 1994·Granted Mar 12, 1996·23 cites·5 claims
- 1342US7741242B2Palladium catalyst compositionWAKO PURE CHEM IND LTD·Filed 2003·Granted Jun 22, 2010·0 cites·10 claims
- 1440USRE40211EDiazodisulfonesWAKO PURE CHEM IND LTD·Filed 2001·Granted Apr 1, 2008·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →