Patents by Inventor Chiun-hsien Chang

Chiun-hsien Chang 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).

  • Absorbent article comprising microporous film
    Patent number: 6328723
    Abstract: An absorbent article having a breathable microporous film is disclosed. The breathable microporous film is made by stretching a mixture of a thermoplastic resin and inorganic fillers at least in one direction. At least a part of the breathable microporous film is deformed such that Z number specified by equation (1) is 3.0 or above, wherein MS: average material strain at break of breathable microporous film; AS: average applied strain for deformation; N: neck down prevention coefficient; &sgr;MS: standard deviation of material strain at break; &sgr;AS: standard deviation of applied strain.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: December 11, 2001
    Assignee: The Procter & Gamble Company
    Inventors: John Glasgow Burns, Jr., Chiun-hsien Chang, Kazushige Kishida, Guido Bonelli, Tsunetoshi Miura