Enhanced efficacy aluminum chlorhydrate antiperspirant and method of making same
CA 1301427 C · Owner: Murray, Robert W. · Inventors: Murray, Robert W.; Rubino, Andrew M.; Nelson, Roger E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Two-thirds to five-sixths basic aluminum chlorides having enhanced antiperspirant efficacy are produced by heating an aqueous solution containing about 40 to about 50 weight percent of the basic aluminum chloride to a temperature of at least about 130 degrees C for about one to twelve hours in a closed vessel, with the heating time being inversely proportional to the temperature. Five-sixths basic aluminum chlorides treated in this manner are characterized by a size exclusion chromatogram having a single major peak with its apex at a relative retention time of about 0.75-0.79. The basic aluminum chlorides may be incorporated into any of the 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
- Granted May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.