Agricultural protective fabric
CA 1292413 C · Owner: Kimberly-Clark Worldwide, Inc. · Inventors: Shipp, Peter W. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure There is disclosed an agricultural protective fabric having characteristics which dynamically change during the growing season as a result of the degradation of one of the fabric layers. The fabric is a two layer fabric of a nondegradable spun-bonded layer and a degradable meltblown layer. During the early part of the season the meltblown layer provides additional protection from frost. In one embodiment, as a result of ultraviolet light the melt-, blown layer degrades to provide less insulation and greater permeability.
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 November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- 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.