Patents by Inventor Roberto Olvera-Camacho

Roberto Olvera-Camacho 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).

  • Formulations of positive films
    Patent number: 6432617
    Abstract: The present invention relates to positive film formulations for obtaining color selection, through the use of balanced primary colors, and the method to obtain the same. Said formulations comprise an emulsion sensitive to any type of light and a photographically accepted vehicle. The thus obtained positive film formulations are suitable to establish trichromatisms and bichromatisms by employing previously balanced primary colors.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: August 13, 2002
    Inventor: Roberto Olvera-Camacho
  • Method for obtaining a tabulation to display a range of colors which can be reproduced with accuracy
    Patent number: 6217337
    Abstract: A method for obtaining a tabulation to display a range of colors which can be reproduced with accuracy is described; which is obtained through the application of a color volume calculated based on the following expression: T=(10V)½   (I) wherein: T=the color shade in percentage (%); V=the color volume in volumetric units.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: April 17, 2001
    Inventor: Roberto Olvera-Camacho
  • Formulations of positive films in order to obtain the selection of colors by means of primary balanced colors, and method for obtaining such formulations
    Patent number: 6168902
    Abstract: The present invention relates to positive film formulations for obtaining color selection, through the use of balanced primary colors, and the method to obtain the same. Said formulations comprise an emulsion sensitive to any type of light and a photographically accepted vehicle. The thus obtained positive film formulations are suitable to establish trichromatisms and bichromatisms by employing previously balanced primary colors.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: January 2, 2001
    Inventor: Roberto Olvera-Camacho