Microcellular paintbrush bristles
CA 1323740 C · Owner: Ametek, Inc. · Inventors: Wagner, William M.; O'Brien, Timothy D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Synthetic microcellular paintbrush bristles are produced having a generally consistent cross-sectional shape along their length and a rough and irregular surface. The bristles comprise 15 to 40% cells on a volume basis, the cells being predominantly closed in the interior of the bristle and being open along the wall to provide the rough and irregular surface.
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.