Assignee
NIKKA CHEMICAL IND CO LTD
JP·3 granted patents·47 citations·filing 1984–1989
Top patents by PatentIndex Score
3 records- 0174US4539012APitch-containing compositionNIKKA CHEMICAL IND CO LTD·Filed 1984·Granted Sep 3, 1985·38 cites·21 claims
- 0252US4933494AProcess for purification of dihydroxydiphenylsulfoneNIKKA CHEMICAL IND CO LTD·Filed 1989·Granted Jun 12, 1990·5 cites·7 claims
- 0337US4608580AHeat-sensitive recording materialNIKKA CHEMICAL IND CO LTD·Filed 1985·Granted Aug 26, 1986·4 cites·3 claims
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