US PATENT SUBCLASS 528 / 316
.~.~.~.~ Material is a ketone, aldehyde, or derivative


Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
271  DF  .~ FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF {10}
310  DF  .~.~ From imide- or lactam-containing compound, or from an amino-nitrogen containing carboxylic acid, or derivative of an amino-nitrogen-containing carboxylic acid {9}
312  DF  .~.~.~ Polymerizing in the presence of a specified material other than reactant {8}
316.~.~.~.~ Material is a ketone, aldehyde, or derivative


DEFINITION

Classification: 528/316

(under subclass 312) Subject matter wherein the specified material is a ketone or aldehyde.

(1) Note. The term "aldehyde" herein does not include aldehyde derivatives, such as acetals or hemiacetals.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the terms "ketone" and "aldehyde".