Aluminum chloride/polyhydroxy complex as antiperspirant
CA 1100144 A · Owner: Unilever Limited · Inventors: Baldock, Michael J.; Mulley, Victor J.; Gosling, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
J.713 (CA), Abstract, The invention concerns an improved antiperspirant material consisting of a basic aluminium chloride/polyhydroxy compound complex of the empirical formula: A12 (OH)6-a Cla (HO)xRy, where R is a polyhydroxy compound having at least 2 carbon atoms each of which is linked to a hydroxy group; a has a value of from 0.8 to 4.0, x has a value of from 0.5 to 2,5 and y has a value of from 0.2 to 5Ø The complex is characterized in that on analysis by a size exclusion chromatographic procedure it exhibits a fraction (referred to as the Band III fraction) having a relative retention time within the range 0.76 to 0.82 within which there is contained at least 15% of the total …
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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
- Granted April 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 1998.
- 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.