Starch-containing fibers, process for their production and products made therefrom
CA 2082340 A1 · Owner: Ems-Inventa Ag · Inventors: Meier, Peter; Buehler, Friedrich; Baron, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A starch fiber produced by a spinning process and comprising: A A first amount of 1 to 100 parts of a starch melt-spinnable composition comprising, 1. a second amount of 56 to 96 parts of at least one modified and/or unmodified starch, 2. a third amount of 4 to 40 parts of at least one destructuring agent, 3. a fourth amount of 0 to 4 parts of at least one additive selected from urea, urea derivatives, emulsifiers lubricants, and proteins and their alkali salts components 1, 2 and 3 totaling 100 parts; and B a fifth amount of 99 to 0 parts of at least one melt-spinnable polymer, ingredients A and B totaling 100 parts. In addition there may also be included 0 to 20 parts of conventional …
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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 6, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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
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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.