Heat-insulating material
CA 1108941 A · Owner: Tallinsky Politekhnichesky Institut Kievsky Kombinat Stroiindustrii · Inventors: Kaps, Tiit K.; Tynnisson, Anne A.; Kumari, Tynu A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-insulating material comprising from 85 to 98 parts by weight of mineral wool and from 15 to 2 parts by weight of a binder applied onto said wool which is a modified, resol phenol-formaldehyde resin on the basis of phenol formal-, dehyde, sodium hydroxide, a water proofing additive which is an individual alkylresorcinol with a number of side chain carbons of 2 to 8 or a mixture of alkylresorcinols as well as, urea, or dicyandiamide, or melamine the ratio between said, components being as follows (parts by weight): phenol - 1, formaldehyde - 0.74-0.96, sodium hydroxide - 0.03-0.05 alkylresorcinol with a number of, side chain carbons of 2 to 8 or a mixture of alkylresorcinols - …
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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 September 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 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.