Patents by Inventor Matthew L. Hurst

Matthew L. Hurst 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: 5569779
    Abstract: Compound mixtures varying from liquids to solids can be prepared via a Michael reaction so that (1) their molecules correspond to the formula Z--C(E)E').sub.p --Q.sub.s wherein Z is alkyl, cycloalkyl, or --(CTT'--CT"G).sub.w --CTT'--CHT"G; Q is --(CTT'--CT"G).sub.t --CTT'--CHT"G; T, T', and T" are independently selected from hydrogen, G', and hydrocarbyl or predominantly hydrocarbyl organic groups containing up to 10 carbons, with the proviso that at least one of T, T', and T" must be hydrogen; E, E', G, and G' are independently selected from --COOR, --C(O)R', and --CN electron withdrawing groups in which R and R' represent alkyl or cycloalkyl groups of up to 10 carbons; p is zero or one; s is respectively two or one; and each of t and w represents zero or a positive integer and (2) at least 25% of the molecules contain at least three G groups.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 29, 1996
    Assignee: Albemarle Corporation
    Inventors: Mahmood Sabahi, Matthew L. Hurst
  • Patent number: 5430177
    Abstract: Compounds varying from liquids to solids can be prepared via a Michael reaction so that they correspond to the formula DA.sub.m in which D is a deprotonated residue of a Michael donor, A is a monovalent group composed of n Michael acceptor moieties, m is an integer of at least one corresponding to the valence of D, and n is an integer of at least one such that the sum of n moieties in the m monovalent A groups is at least three. Among the more preferred products are the ester oils in which the esterifying groups contain 1-30 carbons and which have viscosities such as to make them suitable for use as lubricants.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: July 4, 1995
    Assignee: Albemarle Corporation
    Inventors: Mahmood Sabahi, Matthew L. Hurst
  • Patent number: 5399279
    Abstract: Ester oils that (1) correspond to the formula ROOC-CH.sub.2 CH.sub.2 -(ROOC-CHCH.sub.2).sub.m -C(COOR).sub.2 -(CH.sub.2 CHCOOR).sub.n -CH.sub.2 CH.sub.2 COOR in which the R's represent alkyl groups of 1-30 carbons and the sum of m and n in the molecules is an average of 0-30 and (2) have viscosities suitable for refrigeration lubricants can be given excellent miscibility with fluorohydrocarbon refrigerants, such as R-134a, when at least 10% of the R groups contain 1-4 carbons.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: March 21, 1995
    Assignee: Albemarle Corporation
    Inventors: Mahmood Sabahi, Matthew L. Hurst