Buffing composition
CA 2007805 C · Owner: Elepano, Normita P. · Inventors: Elepano, Normita P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a buffing composition and, in, particular, to a composition that imparts a very fine finish to automobile surfaces. In the 1980's automobile, manufacturers began using a base coat/clear coat paint system for automotive surfaces. The base coat imparts the desired color, and the clear coat, which is applied over the base coat, is a transparent, hard, chip-resistant protective coat. This paint system magnifies painting defects in either the base coat or the clear coat. If the defects cannot be corrected on the assembly line the, automobile must be removed from the line the defects, removed, and the automobile then repainted. This procedure results in a considerable …
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 January 16, 1990 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2012.
- 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.