Stick of composite materials and process for preparation thereof
CA 1286510 C · Owner: Hara, Akio · Inventors: Hara, Akio; Kohno, Yuichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stick of composite materials comprises a hot-pressed super-hard head member containing higher than 50 vol% of a diamond power and/or a high pressure boron nitride powder, and a supporting member which is bonded at one of its ends with the hotpressed super-hard head member. The stick of composite materials is characterized in that the bonding between the head member and the supporting member is formed during the hot press process of the head member; the stick is of an elongated form preferably, of a cylindrical form of which the sectional diameter or equivalent sectional diameter is not larger than 3 mm; the length of the head member is 0.3 to 2.0 mm in the axial direction of the stick; …
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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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.