Insecticidal active thiophene phosphorous derivatives
CA 1078399 A · Owner: Stauffer Chemical Company · Inventors: Gutman, Arnold D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Thiophene phosphorous derivatives and their use as insecticides are described herein. The compounds are defined by the following formula: wherein R is a lower alkyl group having from 1 to 4 carbon atoms and R1 is selected from lower alkyl and lower alkoxy having frsm 1 to 4 carbon atoms.
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 May 27, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 1997.
- 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.