Patents by Inventor James J. Cervera

James J. Cervera 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).

  • Acid-treated manganese dioxide and methods of making thereof
    Patent number: 8303840
    Abstract: A primary battery includes a cathode having an acid-treated manganese dioxide, an anode, a separator between the cathode and the anode, and an alkaline electrolyte.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: November 6, 2012
    Assignee: The Gillette Company
    Inventors: Kirakodu S. Nanjundaswamy, Fan Zhang, Yichun Wang, James J. Cervera, Jennifer A. Nelson, Gary A. Miller, Rimma A. Sirotina
  • ACID-TREATED MANGANESE DIOXIDE AND METHODS OF MAKING THEREOF
    Publication number: 20110220842
    Abstract: A primary battery includes a cathode having an acid-treated manganese dioxide, an anode, a separator between the cathode and the anode, and an alkaline electrolyte.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 15, 2011
    Inventors: Kirakodu S. Nanjundaswamy, Fan Zhang, Yichun Wang, James J. Cervera, Jennifer A. Nelson, Gary A. Miller, Rimma A. Sirotina
  • Alkaline cell with improved separator
    Publication number: 20100119930
    Abstract: An alkaline cell with improved separator. The separator is formed of two sheets. The two sheets are wound into a tube shape and the bottom edge of the wound separator is folded and heat sealed. The facing surfaces of the two sheets forming the separator body are not glued or bonded together. The two separator sheets may overlap laterally so that a portion of each sheet forms a different portion of the separator outside surface. Alternatively, the separator may be formed of two sheets wherein the first sheet forms an outer layer which completely covers the second sheet. One sheet is preferably composed of a blend of polyvinylalcohol fibers and rayon fibers and the other sheet composed of polyvinylalcohol fibers and wood pulp fibers.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 13, 2010
    Inventors: David L. Anglin, James J. Cervera, Alexander Shelekhin, Terry L. Hamilton, Robert M. Smith, Daniel W. Gibbons
  • Battery
    Patent number: 7132198
    Abstract: A primary alkaline battery includes a cathode having manganese dioxide and carbon particles, an anode, a separator and an alkaline electrolyte. The carbon particles include expanded graphite particles and non-expanded graphite particles. The expanded graphite particles have a kerosene absorption greater than about 2.7 milliliters per gram.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: November 7, 2006
    Assignee: The Gillette Company
    Inventors: James J. Cervera, Christopher Haines, Shuming Zeng
  • Battery
    Patent number: 6921610
    Abstract: A primary alkaline battery includes a cathode having manganese dioxide and carbon particles, an anode, a separator and an alkaline electrolyte. The carbon particles include expanded graphite particles and non-expanded graphite particles. The expanded graphite particles have a kerosene absorption greater than about 2.7 milliliters per gram.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: July 26, 2005
    Assignee: The Gillette Company
    Inventors: James J. Cervera, Christopher Haines, Shuming Zeng
  • Battery
    Publication number: 20030017397
    Abstract: A primary alkaline battery includes a cathode having manganese dioxide and carbon particles, an anode, a separator and an alkaline electrolyte. The carbon particles include expanded graphite particles and non-expanded graphite particles. The expanded graphite particles have a kerosene absorption greater than about 2.7 milliliters per gram.
    Type: Application
    Filed: July 11, 2001
    Publication date: January 23, 2003
    Inventors: James J. Cervera, Christopher Haines, Shuming Zeng
  • Battery comprising manganese dioxide having a high power coefficient
    Patent number: 6509117
    Abstract: A battery, a primary alkaline battery, has a cathode including manganese dioxide, carbon, and a binder. The manganese dioxide is selected to have a high power coefficient to provide the battery capable of high current discharge.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: January 21, 2003
    Assignee: The Gillette Company
    Inventors: William Bowden, Klaus Brandt, James J. Cervera, Hyoun Sook Choe, Rimma A. Sirotina, Joseph Sunstrom
  • Method of selecting manganese dioxide for use in a cathode
    Patent number: 6440181
    Abstract: A method of making a cathode includes determining a sample of manganese dioxide having a power coefficient greater than about 3.4, and incorporating the sample of manganese dioxide into the cathode. The cathode can be incorporated into a battery, e.g., a cylindrical primary alkaline battery.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: August 27, 2002
    Assignee: The Gillette Company
    Inventors: William Bowden, Klaus Brandt, James J. Cervera, Hyoun Sook Choe, Rimma A. Sirotina, Joseph Sunstrom
  • Battery separator
    Patent number: 6159634
    Abstract: A thin separator for batteries is provided. The separator includes a layer that reduces dendrite shorting and a nonwoven layer. Typically, the separator also includes a laminate layer disposed between the nonwoven layer and the layer which reduces dendrite shorting. Additional nonwoven layers can also be included in the separator.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: December 12, 2000
    Assignee: Duracell Inc.
    Inventors: William W. Yen, Douglas J. Woodnorth, James J. Cervera