Allergen absorbent and blocking gel
CA 1289073 C · Owner: Schulz, Anthony · Inventors: Schulz, Anthony; Beall, Gary W.; Powell, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An allergen absorbent and blocking gel for topical application to the skin comprises an organophilic clay of the smectite type and a quaternary ammonium compound having aryl or alkyl groups in the range of from 10 to 22 carbon atoms and a vehicle comprising long-chain hydrocarbon or volatile silicone. The material can be made in the form of a stick, a salve or an aerosol spray. It is essential that the organophilic clay gel be highly activated. This is accomplished by high-shear mixing and/or by the use of a low molecular weight polar organic dispersant, such as propylene carbonate. This can also be accomplished using self-activating and self-dispersing clays which do not require high shear …
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
- Granted September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
- 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.