Expired European patentEurope
Method of breaking a plate-like workpiece such as a semi-conductor wafer, and device for breaking said workpiece sandwiched between two foils
EP 0363548 B1 · Applicant: International Business Machines Corporation
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 October 10, 1988 and granted March 23, 1994. A European patent lasts at most 20 years from filing, so its term ended October 10, 2008.
- 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 10, 2014.
- 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 10, 1988
PublishedApril 18, 1990
GrantedMarch 23, 1994
Term endedOctober 10, 2008
Application numberEP 88810694
Classification (CPC)B28D5/0052 +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.