Process for making a low density detergent composition by agglomeration followed by dielectric heating
CA 2254924 C · Owner: Beimesch, Wayne Edward · Inventors: Genskow, Larry Rudolph; France, Paul Amaat; Beimesch, Wayne Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided which produces a low density (below about 600 g/l) detergent composition directly from starting detergent ingredients. The process employs dielectric heating means such as a microwave (MW) dryer or a , Radio Frequency (RF) dryer to "puff" agglomerates formed by agglomerating a surfactant paste or acid precursor thereof and dry detergent materials. The process does not require the use of conventional spray drying towers and , therefore, is more efficient, economical and flexible with regard to the variety of detergent compositions that can be produced in the process.
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 May 1, 1997 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 1, 2019.
- 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.