US PATENT SUBCLASS 257 / 642
.~.~.~ At least one layer of organic material

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

629  DF  WITH MEANS TO CONTROL SURFACE EFFECTS {4}
632  DF  .~ Insulating coating {8}
635  DF  .~.~ Multiple layers {8}
642.~.~.~ At least one layer of organic material {1}
643  DF  .~.~.~.~> Polyimide or polyamide

DEFINITION

Classification: 257/642

At least one layer of organic material:

(under subclass 635) Subject matter wherein at least one insulating layer comprises an organic compound, i.e., one which has a molecule characterized by two carbon atoms bonded together, one atom of carbon being bonded to at least one atom of hydrogen or a halogen, or one atom or carbon bonded to at least one atom of nitrogen by a single or double bond, certain compounds such as HCN, CN-CN, HNCO, HNCS, cyanogen halides, cyanamide, fulminic acid and metal carbides, being

exceptions to this rule.

(1) Note. The definition of an organic compound here is the same as in Class 260, Chemistry of Carbon Compounds.