Biodegradable plastic
CA 2099773 A1 · Owner: Nishida, Tomoaki · Inventors: Nishida, Tomoaki; Takahara, Yoshimasa; Deguchi, Tetsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biodegradable plastic added at an amount of a hydrophilic property imparting-substance providing wettability such that the contact angle of plastic surface to water is 70 ° or less whereby the decomposability thereof with Basidiomycetes the, cultured products thereof and/or the processed products thereof is improved. A method for decomposing plastic under the conditions with limitation to nitrogen and/or carbon in decomposing such biodegradable plastic. In accordance with the present invention, the plastic which has conventionally been decomposed with difficulty can be decomposed efficiently.
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 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2014.
- 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.