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Expired Canadian patentCanada

Cell-seeding into fibrous lattices by means of centrifugation

CA 1202898 A · Owner: Massachusetts Institute Of Technology · Inventors: Burke, John F.; Skrabut, Eugene M.; Yannas, Ioannis V.

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Abstract From the Canadian patent

This invention comprises the use of centrifugal force to introduce viable cells into a fibrous lattice, as well as fibrous lattices that are seeded with cells by the use of centrifugal force. A variety of fibrous lattices may be seeded by the methods of this invention, such as a highly porous lattice comprising collagen fibers crosslinked with glycosaminoglycan. Before the centrifugation a, piece of intact tissue is harvested from a donor site. It is treated with one or more substances such, as trypsin or collagenase, to dissociate cells from the tissue. The cells are then mixed with an aqueous solution to create an aqueous suspension of cells. A piece of fibrous lattice is placed within a …

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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 April 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 8, 1982
GrantedApril 8, 1986
Term endedApril 8, 2003
Patent numberCA 1202898 A
Classification (IPC)A61L15/00

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedNov 8, 1982Patent grantedApril 8, 1986Term endedApril 8, 2003

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