Patents by Inventor Yifang Cal

Yifang Cal 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).

  • Spinner disc and rotary fiberization process
    Patent number: 6453703
    Abstract: A spinner disc for a rotary fiberization process, includes a base plate and an annular peripheral sidewall extending upward from the base plate which has a plurality of rows of fiberizing holes therein for fiberizing molten thermoplastic fiberizable materials by centrifugal force. The base plate has: a central bore therein on a rotational axis of the spinner disc for mounting the spinner disc on a drive shaft; an outer annular portion for receiving molten thermoplastic fiberizable materials to be fiberized; and an inner annular portion intermediate the central bore and, the outer annular base plate portion.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: September 24, 2002
    Assignee: Johns Manville International, Inc.
    Inventors: Walter A. Johnson, Doug Ferreira, Gerard J. DeMott, Yifang Cal
  • Spinner disc and rotary fiberization process
    Publication number: 20020073742
    Abstract: A spinner disc for a rotary fiberization process, includes a base plate and an annular peripheral sidewall extending upward from the base plate which has a plurality of rows of fiberizing holes therein for fiberizing molten thermoplastic fiberizable materials by centrifugal force. The base plate has: a central bore therein on a rotational axis of the spinner disc for mounting the spinner disc on a drive shaft; an outer annular portion for receiving molten thermoplastic fiberizable materials to be fiberized; and an inner annular portion intermediate the central bore and the outer annular base plate portion.
    Type: Application
    Filed: December 20, 2000
    Publication date: June 20, 2002
    Inventors: Walter A. Johnson, Doug Ferreira, Gerard J. DeMott, Yifang Cal