Expired Canadian patentCanada
Liquid cleaner containing viable microorganisms
CA 1293463 C · Owner: Sybron Chemical Holdings Inc. · Inventors: Bromirski, Anthony Frank; Davis, Lois Trezise; Richardson, Ray Oliver
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaning composition which comprises a stable suspension of abrasive particles and viable microorganisms in a water solution containing a detergent.
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 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 9, 1987
GrantedDecember 24, 1991
Term endedDecember 24, 2008
Patent numberCA 1293463 C
Classification (IPC)C11D3/38 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.