US PATENT SUBCLASS 562 / 513
.~.~.~ Preparation from source of undetermined composition (e.g., industrial waste, etc.)

Current as of: June, 1999
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562 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
400  DF  .~ Carboxylic acids and salts thereof {14}
512  DF  .~.~ Acyclic {14}
513.~.~.~ Preparation from source of undetermined composition (e.g., industrial waste, etc.) {1}
514  DF  .~.~.~.~> Nitrogen containing acid produced

DEFINITION

Classification: 562/513

Preparation from source of undetermined composition (e.g., industrial waste, etc.):

(under subclass 512) Processes for producing acyclic carboxylic acids from sources of undetermined compositions, e.g., industrial wastes such as distillery slops, fermentation residues, and waste sulphite liquor. Examples of acids produced from these sources are acetic, oxalic, and glutamic acids and their salts.

(1) Note. This subclass also includes the production of betaine hydrochloride form residual liquors of the beet industry.