Expired European patentEurope
High yield nitrogen gas generators
EP 0063641 B1 · Applicant: ROCKWELL INTERNATIONAL CORPORATION
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 30, 1981 and granted April 3, 1985. A European patent lasts at most 20 years from filing, so its term ended October 30, 2001.
- 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 30, 2007.
- 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 30, 1981
PublishedNovember 3, 1982
GrantedApril 3, 1985
Term endedOctober 30, 2001
Application numberEP 81109400
Classification (CPC)C01B21/02 +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.