Patents by Inventor Edgar M. Marin

Edgar M. Marin 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
  • Patent number: 5320783
    Abstract: A detergent composition comprising a gel wholly or predominantly in hexagonal liquid crystal form comprising: (a) 15% to 70% surfactant system, wherein at least 40% by weight of the surfactant system is an ethoxylated alkyl sulfate surfactant, wherein the alkyl group of the ethoxylated alkyl sulfate surfactant has an average of from 8 to 20 carbon atoms, and wherein the ethoxylated alkyl sulfate surfactant has an average degree of ethoxylation of from 0.5 to 15; (b) 1% to 45% additive which is a water-soluble non-micelle-forming or weakly micelle-forming material capable of forcing the surfactant system into hexagonal phase, the additive being anionic or nonionic and having at most 6 aliphatic carbon atoms, and the additive being selected from the lower amides or mixtures thereof; and (c) 20% to 70% water. The detergent gel has excellent viscosity, overall consistency, foaming, stability and appearance, and provides good cleaning ability. Dishcare gels are preferred.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: June 14, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Edgar M. Marin, Alan E. Sherry, Kyle D. Jones