US PATENT SUBCLASS 349 / 20
.~ Thermal excitation

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

19  DF  PARTICULAR EXCITATION OF LIQUID CRYSTAL {6}
20.~ Thermal excitation {2}
21  DF  .~.~> By heating electrode
22  DF  .~.~> By light beam heating (e.g., IR, laser, etc.)

DEFINITION

Classification: 349/20

Thermal excitation:

(under subclass 19) Subject matter wherein a change in a liquid crystal optical property is exhibited in response to the application of heat energy.

(1) Note. Structure merely maintaining the liquid crystal material at a particular temperature is excluded from this subclass. For such excluded subject matter, see SEARCH THIS CLASS, SUBCLASS below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72, and 161, for using particular devices for keeping the liquid crystal material at a particular temperature.