Patents by Inventor Donna B. Carville

Donna B. Carville 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 polymerizing epoxides in solvent mixtures to form granular polymer products
    Patent number: 4650853
    Abstract: Epoxides are polymerized in granular form which is easily processed. The polymerization occurs in a solvent system composed of significant portions of two different solvents.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: March 17, 1987
    Assignee: The Dow Chemical Company
    Inventors: Donna B. Carville, Samuel J. Washington
  • Additives for nonaqueous liquids
    Patent number: 4573488
    Abstract: Homopolymers and copolymers of butylene oxide having a molecular weight of at least about 1 million are employed as drag reducing agents in nonaqueous liquids.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: March 4, 1986
    Assignee: The Dow Chemical Company
    Inventors: Donna B. Carville, Edwin R. Feig, Gene D. Rose, Mary H. Pulliam
  • Catalyst for epoxide polymerization
    Patent number: 4460703
    Abstract: A novel composition of matter for catalyzing the polymerization of vicinal epoxides is formed by the reaction of a trialkylaluminum compound, phenothiazine, water, acetylacetone and a Lewis base selected from tetrahydrofuran and 1,4-dioxane.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: July 17, 1984
    Assignee: The Dow Chemical Company
    Inventor: Donna B. Carville