Patents by Inventor Cesar Montemayor Guevara

Cesar Montemayor Guevara 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).

  • Publication number: 20010003797
    Abstract: A degradable disposable diaper includes one or more sheets made of polyolefin with the polyolefin including a prodegradant causing the sheet to degrade. The prodegradant includes a metal compound such as a metal selected from the group consisting of cobalt, cerium, and iron. The preferred metal compound is a metal carboxylate. The polyolefin is preferably polyethylene or polypropylene. A secondary polyolefin may be used to aid the incorporation of the prodegradant into the primary polyolefin. A filler may also be used with the polyolefin and prodegradant. The filler preferably has a particle size less than 150 mesh and is free of water. The filler is preferably calcium carbonate having a 1 to 10 micron particle size. The sheet contains between about 0.001 and about 15 weight % prodegradant and most preferably between about 0.01 and about 3 weight % prodegradant. The sheet also includes up to about 15 weight % filler. The diaper also includes a degradable absorbent core.
    Type: Application
    Filed: December 5, 2000
    Publication date: June 14, 2001
    Inventors: Cesar Montemayor Guevara, Oscar J. Kat, Carlos E. Richer, Brian E. Cermak, Joseph G. Gho, David M. Wiles
  • Patent number: 6086571
    Abstract: An absorbent article including a containment assembly having a topsheet, a backsheet and an absorbent core placed between the topsheet and the backsheet. First and second extension ears extend laterally outwards from each one of the corresponding lengthwise edges of the containment assembly in the rear waist region, each one of the first and second extension ears have a close edge connected to the rear waist region, and a distant edge laterally separated outwards from the close edge. First and second elastic belts extend laterally outwards from each one of the corresponding lengthwise edges of the containment assembly in the rear waist region, or from each one of the corresponding extension ears. One of the first and second elastic belts has a close edge connected to the rear waist region, or to the distant edges of the first and second extension ears, and a distant edge laterally separated outwards from the close edge, the tying media being connected at the distant edge.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: July 11, 2000
    Assignee: Absormex S.A. de C.V.
    Inventors: Cesar Montemayor Guevara, Carlos Eduardo Richer Cantu, Martin Juarez Zamacona