Expired Canadian patentCanada
Glasses for encapsulating semiconductor devices and resultant devices
CA 789748 A · Owner: Helen M. Hoogendoorn · Inventors: Helen M. Hoogendoorn; Seymour Merrin
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 9, 1968. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 1985.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 9, 1968
Term endedJuly 9, 1985
Patent numberCA 789748 A
Classification (IPC)H01L
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.