Assignee
SEIKA SANGYO CO LTD
JP·3 granted patents·4 pending applications·18 citations·filing 1979–2024
Top patents by PatentIndex Score
7 records- 0178US2024383844A1Meta-ester aromatic diamines, method for producing same, and polyimide having said meta-ester aromatic diamines as raw materialSEIKA SANGYO CO LTD·Filed 2024·Application pending·0 cites
- 0270US2024239741A1Meta-ester aromatic diamines, method for producing same, and polyimide having said meta-ester aromatic diamines as raw materialSEIKA SANGYO CO LTD·Filed 2022·Application pending·0 cites
- 0352US4269808AMethod of simultaneously subjecting ores to pulverization and leaching or extractionSEIKA SANGYO CO LTD·Filed 1979·Granted May 26, 1981·18 cites·5 claims
- 0447US2022402858A1Method for preparing diaminobiphenyl compoundSEIKA SANGYO CO LTD·Filed 2020·Application pending·0 cites
- 0545US9981905B2Aromatic diamine, an intermediate therefor, a method for producing the aromatic diamine, and a method for producing the intermediate thereforSEIKA SANGYO CO LTD·Filed 2015·Granted May 29, 2018·0 cites·6 claims
- 0640US9957241B2Aromatic diamine, an intermediate therefor, a method for producing the aromatic diamine, and a method for producing the intermediate thereforSEIKA SANGYO CO LTD·Filed 2016·Granted May 1, 2018·0 cites·5 claims
- 0736US2005196660A1Method for measuring water distribution between conductive members, cell for measuring water distribution in polymer membrane and apparatus for measuring water distribution in polymer membraneSEIKA SANGYO CO LTD·Filed 2005·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when SEIKA SANGYO CO LTD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →