Inventor · disambiguated record
Rihoko Imai
Also filed as: IMAI RIHOKO
13 granted patents·160 citations·filing 1992–1997
92Inventor score
Top patents by PatentIndex Score
13 records- 0189US5446135ASulfonyloxy substituted tris-azoaryl dyes and copper complex salts thereof and polarizing films dyed therewithMITSUI TOATSU CHEMICALS·Filed 1994·Granted Aug 29, 1995·27 cites·17 claims
- 0281US5318856AWater-soluble azo dyes and polarizing films using the dyesMITSUI TOATSU CHEMICALS·Filed 1992·Granted Jun 7, 1994·38 cites·7 claims
- 0377US5639809AAzo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Jun 17, 1997·15 cites·8 claims
- 0468US5739298AWater-soluble azo compoundsMITSUI TOATSU CHEMICALS·Filed 1996·Granted Apr 14, 1998·25 cites·2 claims
- 0563US5482986ABenzopyran compound and use of the sameMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jan 9, 1996·7 cites·8 claims
- 0659US5751483AColor filter having polarizabilityMITSUI TOATSU CHEMICALS·Filed 1995·Granted May 12, 1998·26 cites·6 claims
- 0758US5548073AWater-soluble azo compoundsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Aug 20, 1996·5 cites·3 claims
- 0850US5618868APolarizing film of a hydrophilic polymer film containing a novel azo compoundMITSUI TOATSU CHEMICALS·Filed 1994·Granted Apr 8, 1997·3 cites·6 claims
- 0946US5698682AAzo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1997·Granted Dec 16, 1997·3 cites·4 claims
- 1041US5423100AWater-soluble azo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1993·Granted Jun 13, 1995·7 cites·6 claims
- 1133US5952477AAzo compound and polarizing filmMITSUI CHEMICALS INC·Filed 1997·Granted Sep 14, 1999·3 cites·9 claims
- 1233US5750599AQuinophthalone compounds and polarizing films using sameMITSUI TOATSU CHEMICALS·Filed 1997·Granted May 12, 1998·0 cites·4 claims
- 1330US5659039AQuinophthalone compoundsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Aug 19, 1997·1 cites·4 claims
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