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Expired Canadian patentCanada

Process for preparing wet spun proteinaceous filaments

CA 1048726 A · Owner: Miles Laboratories, Inc. · Inventors: Sternberg, Moshe M.; Kim, Chong Y.

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Wet spun proteinaceous filaments are prepared from pulverized, functional defatted leguminous materials having a protein content of about 45 to about 55 percent by, forming an aqueous slurry thereof to extract proteins and carbohydrates, precipitating the protein onto and into the insoluble portion of the leguminous material separating, the solids from the liquid portion of the slurry forming, an aqueous alkaline spinning dope with the separated solids and forcing the spinning dope through a spinneret into an acid and salt coagulating bath to form proteinaceous filaments.

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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 February 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 20, 1979
Term endedFebruary 20, 1996
Patent numberCA 1048726 A
Classification (IPC)A23J3/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 20, 1979Term endedFeb 20, 1996

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.