Expired Canadian patentCanada
Concretion preventing agent for fertilizers
CA 1268050 C · Owner: Iwasaki, Tetsuji · Inventors: Iwasaki, Tetsuji
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 fertilizer is effectively prevented from caking and improved in the storage stability with an aldehyde compound of the formula: R-CHO in which R is alkyl or alkenyl having 4 to 30 carbon atoms, optionally having a hydroxyl group.
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 April 24, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 6, 1986
GrantedApril 24, 1990
Term endedApril 24, 2007
Patent numberCA 1268050 C
Classification (IPC)C05G3/00 +1 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.