Patent Yard Sign in
Expired Canadian patentCanada

Method of transmitting liquid between separated activation compartments for biological purification of water and apparatus for performing the same

CA 1102934 A · Owner: Romo Narodni Podnik · Inventors: Mackrle, Svatopluk; Mackrle, Vladimir; Dracka, Oldrich

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

A method of transmitting liquid between separated activation compartments for biological water purification based upon the application of pressure induced by the stream of liquid in the individual activation compartments due to aeration of said liquid. Such effect is achieved owing to the fact that the inlet holes of transmitting passages between the separated compartments are located in the area of lower velocity of flow of the liquid than the velocity of flow of the same at the outlet holes of the transmitting passages. Such method is easily applicable particularly for vertical tanks. The compensation of pressure losses in the individual compartments, and thus the ensuring of equal levels …

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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
  • 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 2, 1978
GrantedJune 9, 1981
Term endedJune 9, 1998
Patent numberCA 1102934 A
Classification (IPC)C02F3/02 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedAug 2, 1978Patent grantedJune 9, 1981Term endedJune 9, 1998

Sources & verification

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