Patents by Inventor Wu-Chang Chung

Wu-Chang Chung 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).

  • Dental floss holding structure
    Patent number: 8146608
    Abstract: A dental floss holding structure includes a dental floss and two holding bodies. The two ends of the dental floss are respectively connected with a base, which includes a first coupling portion with a first positioning portion mounted thereon. Each of the two holding bodies includes a second coupling portion corresponding to the first coupling portion, and the second coupling portion has a second positioning portion corresponding to the first positioning portion, so that the dental floss and the holding bodies can be stably fixed with each other through the engagement between the first and the second positioning portions. Accordingly, when the user's hands hold the two holding bodies to clean the teeth slits, the fingers can be kept out of the mouth without entering the mouth, which not only provides convenience but also assures the hygiene.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: April 3, 2012
    Assignee: Kin Denfra Co., Ltd.
    Inventor: Wu-Chang Chung
  • DENTAL FLOSS HOLDING STRUCTURE
    Publication number: 20110155168
    Abstract: A dental floss holding structure includes a dental floss and two holding bodies. The two ends of the dental floss are respectively connected with a base, which includes a first coupling portion with a first positioning portion mounted thereon. Each of the two holding bodies includes a second coupling portion corresponding to the first coupling portion, and the second coupling portion has a second positioning portion corresponding to the first positioning portion, so that the dental floss and the holding bodies can be stably fixed with each other through the engagement between the first and the second positioning portions. Accordingly, when the user's hands hold the two holding bodies to clean the teeth slits, the fingers can be kept out of the mouth without entering the mouth, which not only provides convenience but also assures the hygiene.
    Type: Application
    Filed: December 29, 2009
    Publication date: June 30, 2011
    Inventor: WU-CHANG CHUNG
  • Disposable dental flosser
    Patent number: D323723
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: February 4, 1992
    Inventor: Wu-Chang Chung
  • Disposable dental flosser
    Patent number: D352801
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: November 22, 1994
    Inventor: Wu-Chang Chung