Expired European patentEurope
Process for producing aromatic polyamide fiber for rubber reinforcement
EP 0506975 B1 · Applicant: SUMITOMO CHEMICAL COMPANY LIMITED
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 21, 1991 and granted January 3, 1996. A European patent lasts at most 20 years from filing, so its term ended October 21, 2011.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by April 21, 2017.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledOctober 21, 1991
PublishedOctober 7, 1992
GrantedJanuary 3, 1996
Term endedOctober 21, 2011
Application numberEP 91917822
Classification (CPC)D06M15/693 +2 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.