Expired Canadian patentCanada
Polycaprolactam with titanium dioxide content
CA 1329672 C · Owner: Wehr, Rudolf · Inventors: Wehr, Rudolf
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 TiO2-containing polycaprolactam contains, based on TiO2, less than 0.1 X by weight of 100°C water solubles and from 2 to 15 % by weight of monomeric caprolactam and oligomers thereof based on, polycaprolactam.
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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- 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 24, 1988
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329672 C
Classification (IPC)C08K3/22 +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.