Patents by Inventor Patti E. Brown

Patti E. Brown 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).

  • Cationic and anionic lignin amines corrosion inhibitors
    Patent number: 4789523
    Abstract: Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, fluid loss additives, oil well cement additives, corrosion inhibitors, retention aids, cationic dispersants, and tall oil pitch emulsifiers.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: December 6, 1988
    Assignee: Westvaco Corporation
    Inventors: Peter Schilling, Patti E. Brown
  • Cationic and anionic lignin amine sizing agents
    Patent number: 4787960
    Abstract: Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, fluid loss additives, oil well cement additives, corrosion inhibitors, retention aids, cationic dispersants, and tall oil pitch emulsifiers.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: November 29, 1988
    Assignee: Westvaco Corporation
    Inventors: Peter Schilling, Patti E. Brown
  • Cationic and anionic lignin amines as flocculants
    Patent number: 4781840
    Abstract: Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, fluid loss additives, oil well cement additives, corrosion inhibitors, retention aids, cationic dispersants, and tall oil pitch emulsifiers.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: November 1, 1988
    Assignee: Westvaco Corporation
    Inventors: Peter Schilling, Patti E. Brown
  • Cationic and anionic lignin amines
    Patent number: 4775744
    Abstract: Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, fluid loss additives, oil well cement additives, corrosion inhibitors, retention aids, cationic dispersants, and tall oil pitch emulsifiers.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: October 4, 1988
    Assignee: Westvaco Corporation
    Inventors: Peter Schilling, Patti E. Brown