Preparation of carbon filaments by decomposition of a carbonaceous gas on ferro-magnetic metal particles
CA 1313732 C · Owner: Geus, John Wilhelm · Inventors: Geus, John Wilhelm; Linowski, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of preparing carbon filaments is disclosed, which comprises exposing a suitable thermostable substrate which is covered with reduced monocrystalline metal particles with a diameter of at least 5 nanometers to a carbon containing gas mixture at temperatures of about 250° up to about 700°C to 800°C for a period of time sufficient to form filaments of the desired length and thereafter removing the substrate and/or the metal particles. The filaments are characterized by a crystalline graphitic structure and a morphology defined by a fishbone-like arrangement of the graphite layers along the axis of the filaments. A high carbide content is a prerequisite for the nucleation of the …
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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 February 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 2010.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.