Process for preparing rubber-containing waste for further treatment
CA 2079209 A1 · Owner: Gastinger, Dieter · Inventors: Gastinger, Dieter; Schraufstetter, Wilfried; Schraufstetter, Wilfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
57) Abstract, The description relates to a process for preparing rubber-containing waste for further treatment by making use of the britleness of individual components of the waste by cooling the waste in which the rubber-containing wastes is milled in a wormdrive press, cooled at least in the press and possibly more finely divided before insertion in the press. Liquid nitrogen or water is added for cooling purposes. This process uses less power and less coolant like nitrogen or the like is needed.
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
- Filed March 26, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2013.
- 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.