Patents by Inventor David Michael Szum

David Michael Szum has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Radiation-curable liquid resin composition for coating optical fibers
    Patent number: 6359025
    Abstract: A radiation-curable composition for optical fiber coatings comprising about 10 wt. % to about 90 wt. % of at least one radiation-curable oligomer (A), about 10 wt. % to about 90 wt. % of at least one radiation-curable monomer diluent (B), and an effective amount of at least one photoinitiator (C) represented by formula (1): wherein Ar1 to Ar3 are aromatic groups which may have one or more substitution groups.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: March 19, 2002
    Assignee: DSM N.V.
    Inventors: Paul Eugene Snowwhite, Timothy Edward Bishop, David Michael Szum, Zen Komiya, Miyuki Ishikawa, Takashi Ukachi
  • Radiation-curable liquid resin composition for coating optical fibers
    Patent number: 6136880
    Abstract: A radiation-curable composition for optical fiber coatings comprising about 10 wt. % to about 90 wt. % of at least one radiation-curable oligomer (A), about 10 wt. % to about 90 wt. % of at least one radiation-curable monomer diluent (B), and an effective amount of at least one photoinitiator (C) represented by formula (1): ##STR1## wherein Ar.sup.1 to Ar.sup.3 are aromatic groups which may have one or more substitution groups.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: October 24, 2000
    Assignees: DSM N.V., JSR Corporation
    Inventors: Paul Eugene Snowwhite, Timothy Edward Bishop, David Michael Szum, Zen Komiya, Miyuki Ishikawa, Takashi Ukachi