Patents by Inventor Clarence R. Crabb

Clarence R. Crabb 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).

  • Patent number: 5015409
    Abstract: Aqueous-based functional products or corrosive products such as cleansers, household products, commercial products, and personal care products are thickened or viscosity-modified by the addition of at least a small, but effective, amount of at least one crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.a) A.sub.a.sup.n.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radial of valence n, where n is 1 or more, (m+2d+3+n.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: May 14, 1991
    Assignee: The Dow Chemical Company
    Inventors: Arthur E. Read, Jr., John L. Burba, III, Peter A. Doty, Clarence R. Crabb
  • Patent number: 4822421
    Abstract: An aqueous composition comprising cement and a mixed metal layered hydroxide which demonstrates thixotropic properties. The mixed metal layered hydroxide is essentially monolayer. An example of such a layered hydroxide useful in this composition is magnesium aluminum hydroxychloride. These cement compositions are thixotropic and shear thinning, harden without settling and do not dewater upon standing.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: April 18, 1989
    Assignee: The Dow Chemical Company
    Inventor: Clarence R. Crabb