Dermatological preparations containing allantoin
CA 1204669 A · Owner: Warner-Lambert Company Llc · Inventors: Fox, Charles; Rieger, Martin M.; Geria, Navin M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Allantoin is stabilized by preparation in a composition comprising an organic complexing agent and a non-formaldehyde-donating preservative. The preservative may be selected from benzoic acid, esters of para hydroxy benzoic acid, and/or a poly halo substituted phenoxy phenol. The stabilized allantoin composition is further characterized by having an acidic pH, and preferably a pH ranging from about 4.5 to about 6.5. Dermatological compositions including hand lotions, face creams, lipsticks makeups, and the like may be prepared which include the stabilized allantoin composition. The stabilized allantoin compositions assure uniform allantoin presence and activity in combination with improved …
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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 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
- 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.