US PATENT SUBCLASS 523 / 169
.~.~ Antifogging or water repellent composition for optical or windshield application or process of preparing

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
169.~.~ Antifogging or water repellent composition for optical or windshield application or process of preparing

DEFINITION

Classification: 523/169

Antifogging or water repellent composition for optical or windshield application or process of preparing:

(under subclass 1) Subject matter wherein a composition having utility to preserve visibility though a windshield or other optical device either by preventing the buildup of fog or rendering the surface hydrophobic thereby causing the surface to repel water is claimed or solely disclosed or to processes of preparation thereof.

(1) Note. For an explanation of patent placement referring to claimed or solely disclosed, see (in the class definition) the section of SEARCH THIS CLASS, SUBCLASS that refers to this subclass.

(2) Note. An antifogging or water repellent composition and

which is not solely disclosed for those purposes is placed as appropriate in Classes 523 and 524 hereinbelow.

SEE OR SEARCH CLASS

106, Compositions: Coating or Plastic,

13, for a coating or plastic composition not containing a synthetic resin specialized in preventing the formation of fog, frost, or ice on a surface of a window.

252, Compositions, 70, for a frost-preventing, ice-thawing, thermostatic, thermophoric, or cryogenic composition.