Process for making crumb silicone material
CA 1282515 C · Owner: Dow Corning Corporation · Inventors: Beck, Earl W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mixing under low shear vinyl-containing polyorganosiloxane, a silicon-bonded hydrogen polysiloxane and a platinum catalyst, and continued mixing produces a crumb which has an extrusion rate of at least 50 grams per minute through an orifice of 0.5 inch diameter under a pressure of 345 kilopascals and compression points of less than 1035 kilopascals. The crumb is useful in hydraulic applications.
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 April 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 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.