Patent Yard Sign in
Expired Canadian patentCanada

Carbonyl-stress improving agent and peritoneal dialysate

CA 2339879 C · Owner: Tokai University Educational System · Inventors: Miyata, Toshio

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

Carbonyl compounds generated and accumulated in the peritoneal dialysate can be inactivated or eliminated by a carbonyl compound-trapping agent such as aminoguanidine. Carbonyl compounds generated during sterilization and storage of the peritoneal dialysate can be eliminated by pre-contacting with the trapping agent. Further it is possible to eliminate carbonyl compounds transferred from the blood to the peritoneal cavity of the patient during peritoneal dialysis treatment, by adding the trapping agent to the peritoneal dialysate or by circulating the fluid through a carbonyl compound-trapping cartridge. Intraperitoneal protein modification by carbonyl compounds is inhibited by the …

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

  • Filed August 23, 1999 and granted November 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 23, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 23, 1999
GrantedNovember 15, 2011
Term endedAugust 23, 2019
Patent numberCA 2339879 C
Classification (IPC)A61K45/00 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedAug 23, 1999Patent grantedNov 15, 2011Term endedAug 23, 2019

Sources & verification

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