US PATENT SUBCLASS 257 / 40
ORGANIC SEMICONDUCTOR MATERIAL


Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

40ORGANIC SEMICONDUCTOR MATERIAL


DEFINITION

Classification: 257/40

ORGANIC SEMICONDUCTOR MATERIAL:

(under the class definition) Subject matter comprising a semiconductor compound that includes an organic material characterized by two or more carbon atoms bonded together, one atom of carbon bonded to at least one atom of hydrogen or halogen (i.e., chlorine, fluorine, bromine, iodine), or one atom of carbon bonded to at least one atom of nitrogen by a single or double bond.

(1) Note. Certain compounds are exceptions to this rule, i.e., HCN, CN-CN, HNCO, HNCS, cyanogen halides, cyanamide, fulminic acid, and metal carbides. These are not regarded as

organic materials.

(2) Note. Graphite and diamond are not regarded as organic, since they are not compounds; silicon carbide is not regarded as organic. Active solid-state devices using silicon carbide or diamond as the semiconductor are in subclass 77 of this class.

(3) Note. Organic insulating materials, as opposed to semiconducting materials, do not go in this subclass.

SEE OR SEARCH CLASS

136, Batteries: Thermoelectric and Photoelectric,

263, for photoelectric cells containing organic active material. 260, Chemistry of Carbon Compounds, and other classes which form integral parts of Class 260, appropriate subclasses for organic materials

313, Electric Lamp and Discharge Devices,

504, for solid-state organic phosphor material luminescent devices.

361, Electricity: Electrical Systems and Devices,

527, for solid electrolytic capacitors containing an organic salt.

438, Semiconductor Device Manufacturing: Process,

82, for processes of making a light responsive device utilizing an organic semiconductor, and subclass 99 for methods of making an electrical device utilizing as a semiconductor component an organic semiconductor.