(under subclass 523) Subject matter wherein the electrode absorbs infrared, visible, or ultraviolet electromagnetic radiation so that some of the electrons of the material absorb enough energy as a result of the electromagnetic radiation to escape from the surface of the material.
(1) Note. Photocathodes claimed as bases with coatings or layers which emit electrons upon irradiation by electromagnetic radiation of the ultraviolet, visible, infrared light are classified here.
(2) Note. See the class definition for a discussion on electrodes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
326+, for an electrode, per se, which may be a photocathode or photosensitive and used in a lamp or discharge device, particularly subclass 329 for mosaic electrodes which includes photosensitive mosaic electrodes.
329, for mosaic photosensitive electrodes.
365+, for a cathode-ray tube with a photosensitive electrode.
367+, for cathode-ray tubes having mosaic potosensitive electrodes. SEE OR SEARCH CLASS
140, Wireworking,
71.5, for electric lamp or discharge device electrode making or forming.
148, Metal Treatment,
317+, for coated stock material.
252, Compositions,
501.1, for electrically emissive photosensitive compositions.
427, Coating Processes,
74+, for photoelectric coating processes.
445, Electric Lamp or Space Discharge Component or Device Manufacturing,
35+, for processes of assembling an electrode, subclasses 46+ for processes of making an electrode and subclasses 60+ for corresponding apparatus, especially subclass 67 for electrode assembly means.
