Substance for forming lustrous carbon residues from phenol synthesis
CA 1329965 C · Owner: Hormeyer, Heinrich · Inventors: Hormeyer, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The substance to form lustrous carbon from residues from phenol synthesis has a softening point of approximately 100°C (Kraemer-Sarnow) and contains only very small quantities of toxicologically benign substances. It pyrolyzes evenly in the range from 200 to 800°C, forming 30 to 40%-wt of the substance that form lustrous carbon. The small phenol content is achieved by distillation-type thermal processing with the addition of a high-boiling point aromatic oil.
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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 June 7, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2011.
- 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.