Sound absorbing panels
CA 1080633 A · Owner: United States Gypsum Company · Inventors: Wendt, Alan C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sound absorbing panel for use in industrial sound control is disclosed, said panel comprising a sound absorbing material being mineral fiber having a density of from four to six pounds per cubic foot wherein said sound absorbing material is completely enclosed in a heat shrunk plastic material and supporting by a frame having an integral Ushaped cross-seaction extending about the outer edge of the enclosed sound absorbing material. A method for manufacturing said sound absorbing panel is also disclosed.
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 July 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 1, 1997.
- 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.