Clear coats
CA 1323948 C · Owner: Isaac, Sharon R. · Inventors: Isaac, Sharon R.; Harris, Kevin M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An improvement in the appearance of golf balls is disclosed. The "clear coat," i.e. the transparent coat which is the last put on to the outer surface of the golf ball, has included in it an optical brightener, preferably one selected from the group consisting of stilbene derivatives styryl derivatives of benzene and biphenyl bis(benzazol-2-yl) derivatives, coumarins carbostyrils, naphthalimides, derivatives of dibenzothiophene-5,5-dioxide, pyrene derivatives and pyridotriazoles. Substantial improvements in appearance of the golf ball are obtained.
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 November 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 2010.
- 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.