Patents by Inventor Yejia Wu

Yejia Wu 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).

  • Apparatus and method for characterizing fiber crimps
    Patent number: 6853742
    Abstract: Apparatus and method are described for measuring and controlling the crimp characteristics of a moving crimped tow. A light source illuminates a section of the moving crimped tow and at least one progressive scanning camera acquires a non-interlaced video image of the tow. The acquired image is digitized and a processor analyzes the non-interlaced image. Crimp characteristics are derived based on this analysis.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: February 8, 2005
    Assignee: Honeywell International Inc.
    Inventors: Yejia Wu, Nicholas Leoncavallo, Jr., Thomas Yiu-Tai Tam
  • Apparatus and method for characterizing fiber crimps
    Publication number: 20040156534
    Abstract: Apparatus and method are described for measuring and controlling the crimp characteristics of a moving crimped tow. A light source illuminates a section of the moving crimped tow and at least one progressive scanning camera acquires a non-interlaced video image of the tow. The acquired image is digitized and a processor analyzes the non-interlaced image. Crimp characteristics are derived based on this analysis.
    Type: Application
    Filed: November 18, 2003
    Publication date: August 12, 2004
    Inventors: Yejia Wu, Nicholas Leoncavallo, Thomas Yiu-Tai Tam
  • Apparatus and method for characterizing fiber crimps
    Patent number: 6674887
    Abstract: Apparatus and method are described for measuring and controlling the crimp characteristics of a moving crimped tow. A light source illuminates a section of the moving crimped tow and at least one progressive scanning camera acquires a non-interlaced video image of the tow. The acquired image is digitized and a processor analyzes the non-interlaced image. Crimp characteristics are derived based on this analysis.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: January 6, 2004
    Assignee: Honeywell International Inc.
    Inventors: Yejia Wu, Nicholas Leoncavallo, Jr., Thomas Yui-Tai Tam
  • Apparatus and method for characterizing fiber crimps
    Patent number: 6043840
    Abstract: Apparatus and method are described for measuring and controlling the crimp characteristics of a moving crimped tow. A light source illuminates a section of the moving crimped tow and at least one camera acquires a video image of the tow. The acquired image is digitized and a processor decomposes the interlaced image into two non-interlaced field images. Crimp characteristics are derived based on the decomposed images.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: March 28, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Yejia Wu, Nicholas Leoncavallo, Jr., Thomas Yiu-Tai Tam