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Expired Canadian patentCanada

Tissue equivalent test systems

CA 1305913 C · Owner: Bell, Eugene · Inventors: Weinberg, Crispin B.; Bell, Eugene

CIPO record

Overview

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

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Abstract From the Canadian patent

The present invention provides methods of apparatus for, and kits, for determining the interaction of tissue and at least one agent by use of at least one tissue equivalent. Tissue equivalent includes but is, not limited to, equivalents of epithelial tissue connective tissue, cartilage, bone, blood organs, glands and blood vessels, which are composed of living cells and extracellular matrix molecules principally, collagen. Agent includes, but is not limited to various substances, such as chemicals, cosmetics pharmaceuticals; stimuli, e.g. light or physical injury; and tissue protective agents.

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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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 30, 1988
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1305913 C
Classification (IPC)G01N1/30 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 30, 1988Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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