Expired European patentEurope
Neutralization composition for effectively and gently deacidifying books and other paper articles
EP 0545180 B1 · Applicant: BATTELLE INGENIEURTECHNIK GmbH
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 November 21, 1992 and granted March 27, 1996. A European patent lasts at most 20 years from filing, so its term ended November 21, 2012.
- 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 May 21, 2018.
- 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.
FiledNovember 21, 1992
PublishedJune 9, 1993
GrantedMarch 27, 1996
Term endedNovember 21, 2012
Application numberEP 92119850
Classification (CPC)D21H25/18 +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.