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Expired Canadian patentCanada

Metachromatic dye sorption and fluorescent light emissive means for determination of developmental stages of neutrophilic granulocytic cells and other leukocytes

CA 1205365 A · Owner: Kass, Lawrence · Inventors: Kass, Lawrence

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Abstract From the Canadian patent

In the diagnosis and prognosis of various diseases as well as medical researches in relation thereto studies leading to differentiation, identification, enumeration and following the variations in human blood, determination of developmental stages of neutrophilic granulocytic cells including promyelocytes, myelocytes, metamyelocytes, bands neutrophils, eosinophils, basophils, monocytes B-lymphocytes or B-cells, and T-lymphocytes or T-cells and other leukocytes play a vital role. Heretofore, accurate detailed lengthy and arduous procedures were essential to such ends, if available. In a Parent case, Canadian application number 371180 filed February 18, 1981, it was found selective use of …

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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 June 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 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.
FiledFebruary 4, 1983
GrantedJune 3, 1986
Term endedJune 3, 2003
Patent numberCA 1205365 A
Classification (IPC)G01N21/64 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedFeb 4, 1983Patent grantedJune 3, 1986Term endedJune 3, 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.