Fibrous insulation mat with anti-punking binder system
CA 1160513 A · Owner: Manville Service Corporation · Inventors: Mchenry, Patricia A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention comprises a low-cost convenient -to use, anti-punking binder system for use in bonding entangled masses of mineral fibers such as glass. The binder system comprises a phenolic-formaldehyde resin mixed with a water soluble urea-foraldehyde resin the urea-formaldehyde resin content in the binder system comprising an amount of about 5 to 50% by weight of the binder solids content. The urea-formaldehyde resin comprises about 59% urea about 19%, formaldehyde and about 22% water by weight. Silane ammonia and, ammonium sulfate may also be added.
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 January 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 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.