Patents by Inventor Gregory C. Niu

Gregory C. Niu 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).

  • Shunting device adopted in the intracranial shunting surgical operation for the treatment of hydrocephalus
    Patent number: 5000731
    Abstract: This invention relates to a shunting device adopted in the intracranial shunting surgical operation for the treatment of hydrocephalus. It is comprised of a thin film and a ventricular tube to be implanted into the cranium of a patient with hydrocephalus, which will bypass the intraventricular cerebrospinal fluid (CSF) in the brain of such a patient, and thus maintain a normal pressure inside the cranium for the treatment of hydrocephalus.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: March 19, 1991
    Assignee: Tai-Ting Wong
    Inventors: Tai-Ting Wong, Liang-Shong Lee, Gregory C. Niu
  • Water absorbing contact lenses made from polysiloxane/acrylic acid polymer
    Patent number: 4277595
    Abstract: Monomeric polysiloxanes end-capped with activated unsaturated groups are copolymerized with acrylic acid to form hydrophilic, water absorbing polysiloxane contact lenses. These contact lenses are unexpectedly capable upon hydration of retaining from 1 percent to about 99 percent by weight, based upon the total weight of the copolymer, of water.
    Type: Grant
    Filed: September 13, 1979
    Date of Patent: July 7, 1981
    Assignee: Bausch & Lomb Incorporated
    Inventors: William G. Deichert, Gregory C. Niu, Martin F. VanBuren