Polyester resin composition and process for preparing the same
CA 2308633 A1 · Owner: Kaneka Corporation · Inventors: Suzuki, Noriyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyester resin compositions each comprising a polyester resin and a silane/clay composite, wherein the silane/clay composite is one prepared by incorporating a swellable silicate salt with a silane compound of the general formula (1): YnSiX4-n (wherein n is an integer of 0 to 3; Y is an optionally substituted C1-C25 hydrocarbon group; and X is a hydrolyzable group or hydroxyl, with the proviso that when n or 4-n is 2 or above nY's or (4-n)X's , may be the same or different from each other) and the maximum layer thickness of the composite in the composition is larger than 100 .ANG. but smaller than 2000 .ANG..
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 October 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2020.
- 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.