Detergent shaped body with enhanced dissolving properties
CA 2289305 A1 · Owner: Block, Christian · Inventors: Blasey, Gerhard; Schambil, Fred; Kruse, Hans-Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An effervescent shaped detergent body of compacted particulate is presented which disintegrates rapidly in wash liquor without leaving residues on fabrics. They shaped detergent includes 1 to 10 percent by weight of one or more swellable, water-insoluble disintegration aids selected from the group consisting of polyvinyl pyrrolidone polyvinyl, alcohol, and natural and chemically modified biopolymers and 3 to 60 percent by weight of a gas-generating effervescent system.
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 November 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2021.
- 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.