Patents Represented by Attorney Mary Jo Kanaday

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  • Copolyimide exhibiting specific photosensitivity and birefringence
    Patent number: 5449742
    Abstract: Polyimide optical waveguide structures comprising a core within a cladding wherein at least one of the core and the cladding is a polyimide containing 6FDA, BTDA, an aromatic diamine having bulky methyl groups ortho to the amine, and a co-diamine wherein the polyimides have the properties of low optical loss, low optical absorbance, controllable refractive index, and high thermal stability, and wherein the polyimides are photosensitive and solvent resistant.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: September 12, 1995
    Assignee: Amoco Corporation
    Inventors: Allyson J. Beuhler, David A. Wargowski
  • Intermediates for the synthesis of 4-demethoxydaunorubicin
    Patent number: 4161480
    Abstract: The present invention encompasses novel intermediates having the following structural formulas: ##STR1## wherein X is hydrogen, methoxy, or hydroxy; ##STR2## wherein X is hydrogen, methoxy, or hydroxy; and ##STR3## wherein X is hydrogen, methoxy, or hydroxy. Compounds of the present invention are useful in synthesizing 4-demethoxydaunorubicin, daunorubicin, adriamycin, and carminomycin which are potent antitumor agents.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: July 17, 1979
    Assignee: G. D. Searle & Co.
    Inventors: Raphael Pappo, Robert B. Garland