Expired European patentEurope
A binder for a polydiene composite propellant
EP 0027973 B1 · Applicant: NISSAN MOTOR CO., LTD.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Read the whole patent
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.
Why it's free to use
- Filed October 17, 1980 and granted November 9, 1983. A European patent lasts at most 20 years from filing, so its term ended October 17, 2000.
- 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 17, 2006.
- 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 17, 1980
PublishedMay 6, 1981
GrantedNovember 9, 1983
Term endedOctober 17, 2000
Application numberEP 80106336
Classification (CPC)C06B45/10 +1 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.