Expired Canadian patentCanada
Waterproof sunscreen
CA 1330309 C · Owner: Neutrogena Corporation · Inventors: Matravers, Peter
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A skin protective composition for topical application to mammalian skin for protection from water washing containing C18-C36 aliphatic wax and anhydrous hydrophobic starch as its principal active waterproofing agents disposed in a water-free carrier.
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 June 21, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 15, 1989
GrantedJune 21, 1994
Term endedJune 21, 2011
Patent numberCA 1330309 C
Classification (IPC)A61K8/73
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.