Patent Yard Sign in
Expired Canadian patentCanada

High density detergent-making process using a high active surfactant paste having improved stability

CA 2251844 C · Owner: Bohlen, David Scott · Inventors: Hollihan, Lester John; Jensen, Michael Chris; Capeci, Scott William

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 process for making detergent agglomerates is provided in which a high active surfactant paste and a detergent builder are agglomerated together. The process entails maintaining the high active surfactant paste in a highly stable, pumpable and transportable form over an extended period of time. In this way, the process facilitates multi-locational large-scale manufacture of , modern compact detergent products. In particular the high active surfactant , paste can be manufactured in one facility and thereafter, stored and , transported to a remote facility for further processing into the finished detergent agglomerates.

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 April 16, 1997 and granted January 14, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 16, 1997
GrantedJanuary 14, 2003
Term endedApril 16, 2017
Patent numberCA 2251844 C
Classification (IPC)C11D11/00 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedApril 16, 1997Patent grantedJan 14, 2003Term endedApril 16, 2017

Sources & verification

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