Expired Canadian patentCanada
Lubricating sealants
CA 1188674 A · Owner: Stauffer Chemical Company · Inventors: Shim, Kyung S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lubricating sealants which are resistant to aprotic solvents such as chloroform and carbon disulfide are prepared by forming a grease comprising glycerine, fumed silica, polyethylene glycol and a minor amount of water.
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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 June 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
- 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 26, 1982
GrantedJune 11, 1985
Term endedJune 11, 2002
Patent numberCA 1188674 A
Classification (IPC)C10M111/04 +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.