Starch bound non-asbestos paper
CA 1163060 A · Owner: Turner & Newall Limited · Inventors: Cousens, Alan K.; Hargreaves, Brian; Lancaster, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Non-asbestos alternatives to starch-bound asbestos papers comprise a matrix of unfired ball clay which is reinforced by vitreous fibres derived from wool-form materials and by organic web-forming fibres the whole, being bound together by hydrolysed starch.
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 6, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2001.
- 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.