Assignee
TOYKO OHKA KOGYO CO LTD
JP·3 granted patents·29 citations·filing 1988–2005
Top patents by PatentIndex Score
3 records- 0179US7063934B2Negative photoresist compositions for the formation of thick films, photoresist films and methods of forming bumps using the sameTOYKO OHKA KOGYO CO LTD·Filed 2002·Granted Jun 20, 2006·15 cites·8 claims
- 0251US4996132AHeat-resistant photosensitive resin compositionTOYKO OHKA KOGYO CO LTD·Filed 1988·Granted Feb 26, 1991·12 cites·21 claims
- 0347US7129018B2Negative photoresist compositions for the formation of thick films, photoresist films and methods of forming bumps using the sameTOYKO OHKA KOGYO CO LTD·Filed 2005·Granted Oct 31, 2006·2 cites·6 claims
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