Assignee
HAKKOL CHEMICAL CO LTD
JP·4 granted patents·51 citations·filing 1993–1999
Top patents by PatentIndex Score
4 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
- 0341US5606055AOrganic white pigmentHAKKOL CHEMICAL CO LTD·Filed 1993·Granted Feb 25, 1997·8 cites·4 claims
- 0434US5514213AOrganic white pigmentHAKKOL CHEMICAL CO LTD·Filed 1995·Granted May 7, 1996·6 cites·3 claims
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