Class 422/14 - Essentially pure water environment

Subclass of Class 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
Definition: Process for preventing damage to metal by an environment
No. of patents: 202
Last issue date: 08/05/2008

Number	Title	Issue Date
3989637	Corrosion inhibitors and processes for using the same Carboxylated lactones of the general formula ##EQU1## wherein R1 and R2 are individually selected from hydrogen, hydroxy, alkyl, hydroxyalkyl, --COOM, --CHOHCOOM, --CH2 COOM and a 1,3-dioxolane, 5-oxo group, and R	11/02/1976
3948792	Corrosion and scale softening composition A method and composition for reducing the amount of and softening silicate scale formation in automobile and diesel coolant systems where a silicate containing anti-corrosion formula is used which comprises adding to said formula an effective amount of a ...	04/06/1976

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