Expired European patentEurope
Gas-generating composition
EP 0281833 B1 · Applicant: NIPPON KOKI 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 February 23, 1988 and granted January 20, 1993. A European patent lasts at most 20 years from filing, so its term ended February 23, 2008.
- 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 August 23, 2013.
- 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.
FiledFebruary 23, 1988
PublishedSeptember 14, 1988
GrantedJanuary 20, 1993
Term endedFebruary 23, 2008
Application numberEP 88102648
Classification (CPC)C06B35/00 +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.