Brush
CA 1264892 C · Owner: Ito, Ryu · Inventors: Umezawa, Tsuneo; Umebara, Akiyoshi; Ito, Ryu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a brush which comprises a handle portion, a base portion formed with recesses for holding filaments or bristles, an insert which acts as holding means for holding the filaments or bristles in the recesses and filaments or bristles held in the recesses by the insert. According to the invention, the base portion of the brush and possibly also, the handle portion, is formed of a particular plastic which permits the insert which holds the filaments or bristles to press into the sides of the recesses with considerable pressure without cracking the sides so as to permit better holding of the filaments or bristles in the brush base. The plastic forming the base portion …
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 January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 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.