Sunscreen compositions and methods of use thereof
CA 2495966 A1 · Owner: Maniscalco, Thomas J. · Inventors: Maniscalco, Thomas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are novel methods for reducing or preventing the harmful effects of solar radiation on skin. Also disclosed are novel sunscreen compositions comprising 3-2-(4diethylaminophenyl)-2-oxoethylthiazolium salt for reducing or preventing the harmful effects of solar radiation on skin. Agents that provide UV-A and UV-B filters are also included. The invention further discloses additional sunscreen active agents emollients, humectants, dry-feel modifiers waterproofing agents, insect repellants antimicrobial , preservatives, antioxidants chelating agents, fragrances and moisturizers suitable carriers for topical application and emulsions.
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 May 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2025.
- 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.