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Expired Canadian patentCanada

Scintillation apparatus and method with surface- modified polyethylene sample vessels

CA 1234930 A · Owner: Fisher Scientific Company · Inventors: Koetters, Daniel M.; Edelstein, Harold

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Liquid scintillation vials are disclosed formed from polyethylene or polypropylene and fluorinated on at least the inner surface. The advantageous physical properties and disposability of polyethylene or polypropylene are retained, while reducing permeation of organic solvents of the scintillation cocktail into or through the walls. Therefore problems of vial swelling resulting in jamming of scintillation counters are, avoided.

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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 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 16, 1986
GrantedApril 5, 1988
Term endedApril 5, 2005
Patent numberCA 1234930 A
Classification (IPC)G01T7/02 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJune 16, 1986Patent grantedApril 5, 1988Term endedApril 5, 2005

Sources & verification

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