Compounds useful in preparing fluorine-containing chiral smectic liquid crystals
CA 1341010 C · Owner: Minnesota Mining And Manufacturing Company · Inventors: Janulis, Eugene P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound useful in the preparation of ferroelectric liquid crystal compounds comprising a compound represented by the formula, where x is 4 to 20. A compound useful in the preparation of fluorinated ferroelectric liquid crystal compounds and represented in formula, where J is -OH -COOH, or -CHO, y is 1 to 20, z and z' are independently 1 to 20, and R ''' is an alkyl group having 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 30, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 30, 2017.
- 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.