(under subclass 359) Subject matter wherein at least one coating or lamina or the substrate is composed of a metal.
(1) Note. Semiconductor elements are not considered as metal and are included under subclass 359.
(2) Note. Only an elemental metal layer is classified in this subclass. Metal alloys or compositions in a multilayer structure are classified in subclass 359.
SEE OR SEARCH THIS CLASS, SUBCLASS:
722+, for lenses with selective wavelength transmitting or blocking.
SEE OR SEARCH CLASS
250, Radiant Energy,
226, for color filter or spectroscope optical or pre-photocell system. 351, Optics: Eye Examining, Vision Testing and Correcting,
44, for sunglasses with antiglare or shading.
607, Surgery: Light, Thermal, and Electrical Application,
