Low-temperature-stable titanium chelates
CA 2047920 C · Owner: Horn, Michael · Inventors: Horn, Michael; Kotzsch, Hans-Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Titanium chelates of the formula, (see formula I) in which X represents, (see formula II) and It is selected from the group consisting of ethyl n-propyl, n-butyl, i-butyl and t-butyl and mixtures thereof are disclosed. The compounds are prepared by mixing diisopropoxytitanium bis- (acetylacetonate) (i-PrO)2TiX2 with dialkoxytitanium bis(acetylacetonate) (RO)2TiX2 and allowing the mixture to react at a temperature of from 1 to 100°C above the melting point of the higher melting component of the mixture for 0 to 60 minutes. The compounds are useful as adhesion promoters between inorganic and organic surfaces and printing inks and for coating sheet glass, hollow glassware and glass fibres to …
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 July 25, 1991 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2013.
- 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.