US PATENT SUBCLASS 501 / 901
.~.~ Having R.I. at least 1.8

Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
900  DF  .~ Optical glass (e.g., silent on refractive index and/or Abbe number) {6}
901.~.~ Having R.I. at least 1.8

DEFINITION

Classification: 501/901

Having R.I. at least 1.8:

This subclass takes cross-references of patents which are originals in subclasses enumerated above disclosing an optical glass composition or method of making same having a refractive index of at least 1.8.