US PATENT SUBCLASS 264 / 1.7
.~ Composite or multiple layer


Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

1.1  DF  OPTICAL ARTICLE SHAPING OR TREATING {11}
1.7.~ Composite or multiple layer {2}
1.8  DF  .~.~> Including bifocal
1.9  DF  .~.~> Reflective


DEFINITION

Classification: 264/1.7

Composite or multiple layer:

(under subclass 1.1) Processes directed to shaping or treating an optical article including incorporation of an optical preform into the final optical article.

(1) Note. This and the indented subclasses provide for molding a lens in two different sections where the first section has the second molded against it as well as processes in which the second section completely covers the first.

(2) Note. Chemical treatment of an optical preform to alter optical properties of part of the preform are not provided for herein, and are found in subclass 2.6.