Expired Canadian patentCanada
Wafer suspension box
CA 2075654 C · Owner: Entegris, Inc. · Inventors: Gregerson, Barry
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 ridged, transparent, thermoplastic package for transporting substrate wafers is disclosed. The package includes elastomeric cushions which hold the substrate wafers in a manner which precludes them from becoming damaged during normal shipping and handling.
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
- Filed August 10, 1992 and granted October 28, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 10, 1992
GrantedOctober 28, 1997
Term endedAugust 10, 2012
Patent numberCA 2075654 C
Classification (IPC)B65D85/57 +1 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.