2-phenylpyridine derivatives
CA 1254573 A · Owner: Seiko Epson Kabushiki Kaisha · Inventors: Obikawa, Tsuyoshi; Yamada, Shuhei; Shinozaki, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 2-phenyl pyridine derivative of the formula wherein when Y=R, Z is selected from the group consisting of R RO, , and , when Y=RO, Z is selected from the group of straight chain pentyl; or CN;, when Y is , or , Z is, selected from the group of R RO and CN;, when Y is CN, Z is RO, , or -CH2CH2-;, wherein R is a straight chain alkyl group of 1 to 12 carbon atoms useful as a liquid crystal compound, more particularly as nematic liquid crystal compounds which can be used as ingredients of liquid crystal compositions utilized as electro-optical display materials.
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 23, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 23, 2006.
- 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.