Reinforced poly(arylene sulfide) resins having reduced flash
CA 2105211 A1 · Owner: Wadhwa, Lachhman H. · Inventors: Wadhwa, Lachhman H.; Zorrilla, Andres; Naviello, Gerard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Molding compositions which comprises a melt blend of: (a) poly(arylene sulfide);, (b) reinforcing filler; and (c) a flash reducing amount of an amorphous silica having a surface area of from about 50 to about 500 m2/g wherein the composition has a melt viscosity of from about 150 to about 900 Pa.S at 400 sec-1 and 316°C.
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
- Filed August 31, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 31, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2015.
- 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.