Method and apparatus useful in control of edge uniformity in nonwoven fabrics
CA 1069285 A · Owner: Phillips Petroleum Company · Inventors: Stoller, Frederick L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
25,448, METHOD AND APPARATUS USEFUL IN CONTROL OF EDGE UNIFORMITY IN NONWOVEN FABRICS, Abstract of the Disclosure A nonwoven fabric is passed to a compression zone wherein the edge portions of said fabric are compressed to produce a nonwoven fabric with a uniform thickness.
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 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.