Polymer of 1,2,4-thiadiazole and lubricants containing it as an additive
CA 1099726 A · Owner: Pennwalt Corporation · Inventors: Popoff, Ivan C.; King, James P.; Mailey, Everett A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The Polymer of 1,2,4-thiadiazole of the structure and lubricants containing said polymer are provided wherein R is selected, from the group consisting of , , , , . phenylene, an alkylene or substituted alkylene of 2-50 carbons cyclic, alkylene or substituted cyclic alkylene of 5-50 carbons wherein the alkylene or cyclic alkylene can contain oxygen and/or sulfur atoms or (S)x groups, and wherein the substituent is selected from oxygen and/or sulfur atoms or (S)x groups or lower alkyl, or combinations thereof; m is an Integer of 0-10;, n is an integer of 5-100; x is an integer of 1-5.
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 April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.