Patents by Inventor T. Reginald Forbus

T. Reginald Forbus 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: 5725755
    Abstract: A catalytic hydrodewaxing process is described for producing liquid hydrocarbon lubricant base stock from liquid hydrocarbon feedstock in greater yield and viscosity index equivalent to solvent dewaxing methods. The process involves contacting a feedstream comprising hydrogen and the hydrocarbon feedstock with shape selective metallosilicate catalyst particles under hydrodewaxing conditions sufficient to produce a base stock having a predetermined viscosity index without regard to the base stock pour point temperature produced by the process. Pour point depressants are added to the base stock to lower the pour point temperature of the base stock to a predetermined temperature.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: March 10, 1998
    Assignee: Mobil Oil Corporation
    Inventor: T. Reginald Forbus
  • Patent number: 5641736
    Abstract: A synergistic mixture of pour point depressants is disclosed along with hydrocarbon lubricants containing same. The pour point depressant mixture is a mixture of a first PPD comprising a near linear copolymer of a mixture of ethylene and C.sub.3 -C.sub.28 1-alkenes, or only 1-alkenes, wherein a large proportion of the pendant alkyl groups of the recurring 1-alkene monomer units contain between 14 and 22 carbon atoms; and an additional conventional PPD, preferably polymethylmethacrylate. The copolymer is produced by polymerization of mixed 1-alkenes with reduced chromium oxide catalyst on silica support.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: June 24, 1997
    Assignee: Mobil Oil Corporation
    Inventor: T. Reginald Forbus