Patents by Inventor Francisco Lopez-Serrano Ramos

Francisco Lopez-Serrano Ramos 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).

  • Rubber and carbon black
    Patent number: 6646028
    Abstract: A process is provided for making a carbon-filled rubber having a uniform dispersion of nanometric-sized carbon black particles. Fluffy carbon black is received as a slurry in water and added to latex rubber before or during coagulation in an emulsion styrene butadiene rubber plant, or fluffy carbon black is similarly incorporated in rubber using a different type of rubber-manufacturing process. A uniform dispersion of smaller-than-usual carbon black particles in rubber is formed, which provides a black masterbatch rubber with superior mechanical and rheological properties. Ash and grit is removed from the fluffy carbon black slurry, which further improves the properties of the carbon-filled rubber by reducing defects in the rubber caused by the ash or grit.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: November 11, 2003
    Assignee: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. de C.V.
    Inventors: Francisco Lopez-Serrano Ramos, Luis Enrique Mille Loera, Angel Garcia Garza
  • Rubber and Carbon Black
    Publication number: 20020111413
    Abstract: A process is provided for making a carbon-filled rubber having a uniform dispersion of nanometric-sized carbon black particles. Fluffy carbon black is received as a slurry in water and added to latex rubber before or during coagulation in an emulsion styrene butadiene rubber plant, or fluffy carbon black is similarly incorporated in rubber using a different type of rubber-manufacturing process. A uniform dispersion of smaller-than-usual carbon black particles in rubber is formed, which provides a black masterbatch rubber with superior mechanical and rheological properties. Ash and grit is removed from the fluffy carbon black slurry, which further improves the properties of the carbon-filled rubber by reducing defects in the rubber caused by the ash or grit.
    Type: Application
    Filed: December 5, 2001
    Publication date: August 15, 2002
    Applicant: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. de C.V.
    Inventors: Francisco Lopez-Serrano Ramos, Luis Enrique Mille Loera, Angel Garcia Garza
  • Chemical depletion process to substantially remove residual monomers in emulsion polimerization processes
    Patent number: 5886140
    Abstract: A process has been developed to substantially reduce the residual monomer resulting at the end of the emulsion polymerization reaction. The process consists in submitting the latex to a redox process after the polymerization reaction. The recommended environment consists of vinyl monomers and/or conjugated dienes homo or copolymer that has a residual monomer content not in excess of 100,000 ppm at the end of the reaction. After the chemical depletion, residual monomer contents of 50 to 1000 ppm are achieved in a process that lasts from 0.5 to 5 hours at most.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: March 23, 1999
    Assignee: Centro De Investigacion Y Desarollo Technologico S.A. de C.V.
    Inventors: Margarito Albarran Olivares, Francisco J. Alvaro Archundia, Francisco Lopez Serrano Ramos