Patents by Inventor Edgar M. Marin-Carrillo

Edgar M. Marin-Carrillo 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).

  • Patent number: 5486297
    Abstract: The present invention relates to a method for reducing dye fading of a fabric comprising depositing on the fabric a soil release agent capable of substantially absorbing ultraviolet and/or visible light (in the 200-700 nanometer wavelength range). The soil release agent is preferably deposited on the fabric during a laundering or drying operation. Preferably the weight ratio of soil release agent to fabric is between about 1:10,000 and about 1:100. The soil release agent has light-absorbing chemical structure groups which can include carbonyls, carboxylates, conjugated double bonds, and/or aromatic rings. Suitable soil release agents for use in the invention include oliogomeric, substantially linear, sulfonated poly-ethoxy/propoxy end-capped esters, which comprise oxyethyleneoxy units and terephthaloyl units.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: January 23, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Edgar M. Marin-Carrillo, Luis A. Amestica, Francisco R. Figueroa, Ana M. Ramirez-Semeco