Expired European patentEurope
Method of manufacturing a semiconductor device, in which a semiconductor substrate is subjected to a treatment in a reaction gas
EP 0174673 B1 · Applicant: Philips Electronics N.V.
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 July 12, 1985 and granted September 21, 1988. A European patent lasts at most 20 years from filing, so its term ended July 12, 2005.
- 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 January 12, 2011.
- 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.
FiledJuly 12, 1985
PublishedMarch 19, 1986
GrantedSeptember 21, 1988
Term endedJuly 12, 2005
Application numberEP 85201184
Classification (CPC)C23C16/455 +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.