Thinning of granular starch
CA 2126126 A1 · Owner: Suss, Hans-Ulrich · Inventors: Suss, Hans-Ulrich; Eul, Wilfried R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for thinning granular starch in an aqueous slurry employing a source of peracid without using metal catalysts. The thinning process is aimed at modifying granular starches by lowering viscosity/increasing alkaline fluidity. It can also be employed immediately before or during cooking (gelatinization) of starch. Sources of peracids are peroxomonosulfuric acid (Caro's acid) or organic peracids such as performic, peracetic or perpropionic acid. Reaction time and temperature are lower than for existing process while product properties are improved.
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 June 17, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2016.
- 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.