Organic compounds (class 532, subclass 1) > Carboxylic acid anhydrides (i.e., compounds having the -c(=o)-o-c(=o)- group) > Processes of forming the -c(=o)-o-c(=o)- group > Ketone or ketene reactant > Patents

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Class Information
Number: 562/892
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carboxylic acid anhydrides (i.e., compounds having the -c(=o)-o-c(=o)- group) > Processes of forming the -c(=o)-o-c(=o)- group > Ketone or ketene reactant
Description: Processes wherein a ketene or a ketone is used as a reactant.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
7199263	Acetic anhydride and acetate ester co-production	Apr. 3, 2007
6469206	Process for the preparation of triflic anhydride	Oct. 22, 2002
6248923	Process for the production of fluorocarboxylic acid anhydrides	Jun. 19, 2001
5264087	Method for refining acetic anhydride by distillation	Nov. 23, 1993
4570017	Preparation of optically-active (mixed) anhydrides and acids	Feb. 11, 1986