Patents by Inventor John A. Chang

John A. 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 articles providing sustained dynamic fit
    Patent number: 5634916
    Abstract: Absorbent articles such as diapers, incontinent briefs, training pants, diaper holders and liners, feminine hygiene garments, and the like, designed to provide sustained dynamic fit about the wearer during use as well as to improve the containment of body exudates and wearer comfort/mobility. Such an absorbent article has an absorbent core preferably designed to fit within the low motion zone of the wearer so that dynamic forces imparted by movements of the wearer on the absorbent core are minimized. The absorbent article is also provided with a closure system for anchoring the absorbent article on the wearer to sustain the dynamic fit of the absorbent article throughout wearing. The closure system is designed so that a primary line of tension, fitting at an angle to the body, is formed to secure the absorbent article on a wearer.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: June 3, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Gary D. Lavon, Edward P. Carlin, Kenneth B. Buell, Thomas A. Desmarais, John A. Chang, Christina S. Mueller, Takako Haga
  • Sanitary napkin wrapper and adhesive tab construction for the same
    Patent number: 5484636
    Abstract: A sanitary napkin wrapper and adhesive tab construction for such a wrapper are disclosed. The adhesive tab can, in a preferred embodiment, be applied to the package formed by the wrapper contemporaneously with its own landing member to form a complete fastening system. The sanitary napkin wrapper can also be provided with a flap or pouch in several variations for securing the used sanitary napkin for disposal.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: January 16, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Charles J. Berg, Jr., Delmar R. Muckenfuhs, William P. Maxam, Jr., Alan E. Byrd, John A. Chang
  • Absorbent articles providing sustained dynamic fit
    Patent number: 5358500
    Abstract: Absorbent articles such as diapers, incontinent briefs, training pants, diaper holders and liners, feminine hygiene garments, and the like, designed to provide sustained dynamic fit about the wearer during use as well as to improve the containment of body exudates and wearer comfort/mobility. Such an absorbent article has an absorbent core preferably designed to fit within the low motion zone of the wearer so that dynamic forces imparted by movements of the wearer on the absorbent core are minimized. The absorbent article is also provided with a closure system for anchoring the absorbent article on the wearer to sustain the dynamic fit of the absorbent article throughout wearing. The closure system is designed so that a primary line of tension, fitting at an angle to the body, is formed to secure the absorbent article on a wearer.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: October 25, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Gary D. Lavon, Edward P. Carlin, Kenneth B. Buell, Thomas A. Desmarais, John A. Chang, Christina-Susanne Mueller, Takako Haga