Expired Canadian patentCanada
Curable hydrophilic silicone polyether polymer
CA 1289693 C · Owner: Traver, Frank John · Inventors: Raleigh, William John; Doin, James Edward; Traver, Frank John
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A bis (alkoxysilyl) polyether is produced and utilized as a fabric sizing agent,
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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 3, 1988
GrantedSeptember 24, 1991
Term endedSeptember 24, 2008
Patent numberCA 1289693 C
Classification (IPC)D06M15/64 +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.