A biodegradable plastic composition, a molded article thereof and a method for controlling biodegradation rate using the same composition
CA 2448469 A1 · Owner: Nisshinbo Industries, Inc. · Inventors: Takahashi, Ikuo; Yamazaki, Yoshihiro; Takeuchi, Tsuyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biodegradable plastic composition which can be stably adjusted in biodegradation rate and has greatly, improved resistance to hydrolysis and weather in particular, the former, and durability resulting from the improved resistances; a molded article thereof; and a method for controlling biodegradation rate using the same composition. The biodegradable plastic composition comprising (A) 100 parts by weight of biodegradable plastic (B) 0.01 to 10 parts by weight of a carbodiimide compound and (C) 0.01 to 10 parts by weight of at least one compound selected from the group consisting of benzotriazoletriazine- and hydroxylamine-based one; the molded article thereof; and the method for …
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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 November 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2025.
- 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
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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.