Chitin films and fibers
CA 1104313 A · Owner: University Of Delaware · Inventors: Brine, Charles J.; Austin, Paul R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new method for producing high-strength films fibers and, other shaped articles from chitin has been discovered whereby, an anhydrous solution of chitin is made into the desired shape the chitin is insolubilized with an organic non-solvent for the chitin and the resultant shaped article if desired, is oriented, by cold drawing until its properties such as tensile strength, are substantially enhanced. The films fibers, and other shaped, articles capable of being oriented or in oriented form are, novel and useful in such applications as food wrap and surgical sutures.
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 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.