Patent Yard Sign in
Expired Canadian patentCanada

Complex phosphate adsorbent

CA 1324601 C · Owner: Okazaki, Susumu · Inventors: Okazaki, Susumu; Hino, Kuniaki; Endo, Hiroshi

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

The present invention discloses a phosphate adsorbent comprising an MgO-TiO2 complex as an active ingredient and a phosphate adsorbent having said complex deposited on active carbons. In the preferred embodiments of the present invention, the MgO/TiO2 molar ratio in the complex is in the range of 99.99/0.01 to 80/20, the specific surface area of the adsorbent as measured by BET method is in the range of 50 to 700 m2/g and the adsorbent shows a crystal diffraction pattern of MgO in powder X-ray diffractometry. The phosphate adsorbent according to the present invention is useful as an antihyperphosphoremial agent, an adsorbent for hemoperfusion and a therapeutical agent for renal diseases.

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 November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 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.
FiledAugust 24, 1988
GrantedNovember 23, 1993
Term endedNovember 23, 2010
Patent numberCA 1324601 C
Classification (IPC)B01J20/06 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 24, 1988Patent grantedNov 23, 1993Term endedNov 23, 2010

Sources & verification

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