Inventor · disambiguated record
Takao Yanagisawa
Also filed as: YANAGISAWA TAKAO
5 granted patents·56 citations·filing 1978–1999
80Inventor score
Top patents by PatentIndex Score
5 records- 0185US6488867B1Organic fluorescent whitening pigment composition having an excellent hiding powerHAKKOL CHEMICAL CO LTD·Filed 1999·Granted Dec 3, 2002·19 cites·11 claims
- 0274US6140477ANear-infrared ray absorbing polyazo compoundHAKKOL CHEMICAL CO LTD·Filed 1999·Granted Oct 31, 2000·18 cites·3 claims
- 0346US4371475A1,4-Bis-styryl-benzene derivatives and a process for the preparation of the sameSHOWA KAGAKU KOGYO COMPANY LTD·Filed 1978·Granted Feb 1, 1983·5 cites·12 claims
- 0441US5606055AOrganic white pigmentHAKKOL CHEMICAL CO LTD·Filed 1993·Granted Feb 25, 1997·8 cites·4 claims
- 0534US5514213AOrganic white pigmentHAKKOL CHEMICAL CO LTD·Filed 1995·Granted May 7, 1996·6 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →