Process of pretreatment prior to paint coating
CA 1270463 C · Owner: Abe, Masaru · Inventors: Sekiguchi, Katsumi; Ebisawa, Hiroo; Hara, Hirofumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The surface of a product molded of polyolefin is washed with an organic solvent containing fluorine such as CCl2F-CCl2F or CCl2F-CClF2 and thereafter plasma treatment is effected on the product surface. Since the product surface is washed with the organic solvent containing fluorine, wastewater and process operation can be controlled with relative ease. The product pretreated by the process of the invention has large peel strength and water resistance when it is coated with paint.
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 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
- 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.