Brightening compositions
CA 1094262 A · Owner: Ciba-Geigy Investments Ltd. · Inventors: Gunter, Franz; Eckhardt, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Case 1-10594/++, Canada, Brightening compositions Abstract of the Disclosure, A brightening composition consisting of a mixture of brighteners and 0 to 99.995 % by weight of a commercially available washing agent, said mixture containing at least two brighteners of the formula, in which A and B independently of one another denote a radical of the formula, or , in which M represents hydrogen or an ammonium,alkaline earth metal, amine salt or alkali metal ion, as well as a process for brightening organic textiles are disclosed.
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 January 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 27, 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.
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.