Method of preparing polyphenylene oxide composition and laminate using the composition
CA 1285675 C · Owner: Sakamoto, Takaaki · Inventors: Maeda, Shuji; Takanaga, Tetsuya; Sakamoto, Takaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of preparing a polyphenylene oxide (PPO) composition as well as a laminate using such composition, wherein a setting means containing a polyfunctional component having a crosslinking property and compatible with PPO is added to and mixed with PPO, and a sufficient film-forming property is provided to PPO, whereby the PPO composition can be obtained in the form of a film and, when a plurality of such films are stacked to form a metal-clad laminate the laminate exhibits low dielectric constant and loss so as to be effectively utilizable in such super high frequency band as X band used for satellite communication or the like.
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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.