Patents by Inventor Daxing Ma

Daxing Ma 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).

  • Process of forming a negative battery paste
    Patent number: 6740452
    Abstract: Provided for herein is a process of forming a negative battery paste comprising combining a barium containing material at least partially dissolved in a portion of water with an organic expander, carbon black, and a lead oxide containing material to form a first mixture, followed by combining the first mixture with an amount of sulfuric acid to form the negative battery paste.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: May 25, 2004
    Assignee: Delphi Technologies, Inc.
    Inventor: Daxing Ma
  • Method of making a paste composition for lead acid battery
    Patent number: 6733547
    Abstract: A composition and plate-making process for a lead acid battery for reducing active material shrinkage in negative battery plates. A polymer is mixed with lead oxide, water, an expander and sulfuric acid to form a negative paste composition comprising the expander and basic lead sulfate crystals with the polymer absorbed on the crystal surfaces. The paste having the polymer addition is then pasted onto a grid where the paste is dried, cured and reacted to form a negative battery plate of the lead acid battery. The negative battery plate comprises a sponge lead negative active mass that exhibits less shrinkage by virtue of the polymer addition.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: May 11, 2004
    Assignee: Delphi Technologies, Inc.
    Inventor: Daxing Ma
  • Negative battery paste
    Publication number: 20030180613
    Abstract: Provided for herein is a process of forming a negative battery paste comprising combining a barium containing material at least partially dissolved in a portion of water with an organic expander, carbon black, and a lead oxide containing material to form a first mixture, followed by combining the first mixture with an amount of sulfuric acid to form the negative battery paste.
    Type: Application
    Filed: March 19, 2002
    Publication date: September 25, 2003
    Inventor: Daxing Ma
  • Paste composition for lead acid battery
    Publication number: 20030106205
    Abstract: A composition and plate-making process for a lead acid battery for reducing active material shrinkage in negative battery plates. A polymer is mixed with lead oxide, water, an expander and sulfuric acid to form a negative paste composition comprising the expander and basic lead sulfate crystals with the polymer absorbed on the crystal surfaces. The paste having the polymer addition is then pasted onto a grid where the paste is dried, cured and reacted to form a negative battery plate of the lead acid battery. The negative battery plate comprises a sponge lead negative active mass that exhibits less shrinkage by virtue of the polymer addition.
    Type: Application
    Filed: December 10, 2001
    Publication date: June 12, 2003
    Inventor: Daxing Ma