Stabilized red phosphorus and process for making it
CA 1097152 A · Owner: Hoechst Aktiengesellschaft · Inventors: Dany, Franz-Josef; Adam, Wilhelm; Kandler, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stabilized red phosphorus consisting of particular with a size of at most about 2 mm and an oxidation stabilizer. The individual phosphorus particles are superficially covered with a thin film of a polycondensation product of melamine and formaldehyde as the oxidation stabilizer, the polycondensation product being used in a proportion of about 1 to 20 weight % based, on the quantity of red phosphorus.
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 March 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 1998.
- 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.