Expired European patentEurope
Microwave heterojunction bipolar transistor, and corresponding integrated circuit and fabrication methods
EP 0525762 B1 · Applicant: TEXAS INSTRUMENTS INCORPORATED
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 July 30, 1992 and granted November 2, 2000. A European patent lasts at most 20 years from filing, so its term ended July 30, 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 January 30, 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.
FiledJuly 30, 1992
PublishedFebruary 3, 1993
GrantedNovember 2, 2000
Term endedJuly 30, 2012
Application numberEP 92112998
Classification (CPC)H10D10/021 +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.