Expired Canadian patentCanada
Plastic shock absorber for packing and process for producing the same
CA 1215625 A · Owner: Kabushiki Kaisha E.P.E. · Inventors: Yamashiro, Hiroshi
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plastic shock absorber for packing which is prepared by sealing a gas such as air in a hollow cylindrical plastic body and heat-pressing it substantially vertically and horizontally at suitable intervals.
Read 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 December 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 16, 1983
GrantedDecember 23, 1986
Term endedDecember 23, 2003
Patent numberCA 1215625 A
Classification (IPC)B32B1/08 +2 more
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.