Patent Yard Sign in
Expired Canadian patentCanada

Device for plasma modification -- composition and remodeling

CA 1325172 C · Owner: Clark, Brian R. · Inventors: Lerch, L. Bernard; Okarma, Thomas B.; Chang, Chin-Hai

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

Compositions and devices are provided for the specific removal of components of plasma in efficient and economical ways. The devices provide for a tortuous path of the plasma through a high surface material to which is bound a binding compound for removal of the fluid component. The devices find particular application with plasma, in diagnosis therapy, and for production of specific physiologically active materials.

Read the whole patent

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 December 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 5, 1989
GrantedDecember 14, 1993
Term endedDecember 14, 2010
Patent numberCA 1325172 C
Classification (IPC)A61M1/34 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 5, 1989Patent grantedDec 14, 1993Term endedDec 14, 2010

Sources & verification

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