Expired European patentEurope
Improvements in or relating to apparatus to focus light on a surface
EP 0116753 B1 · Applicant: Secretary of State for Trade and Industry in Her Britannic Majesty's Gov. of the U.K. of Great Britain and Northern Ireland
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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, and the Claude kit works from them.
Why it's free to use
- Filed November 15, 1983 and granted June 24, 1987. A European patent lasts at most 20 years from filing, so its term ended November 15, 2003.
- 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 15, 2009.
- 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 15, 1983
PublishedAugust 29, 1984
GrantedJune 24, 1987
Term endedNovember 15, 2003
Application numberEP 83306971
Classification (CPC)A61B1/0638 +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.