Patents by Inventor Joseph G. Schell, Jr.

Joseph G. Schell, Jr. 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).

  • Catalyst and process for polymerizing olefins
    Patent number: 5114897
    Abstract: Olefins are polymerized under solution polymerization conditions in the presence of the solid catalytic product resulting from removing the liquid components from the product resulting from admixing in an inert diluent and in an atmosphere which excludes moisture and oxygen (A) at least one hydrocarbon soluble organomagnesium compound; (B) at least one organic hydroxyl-containing compound; (C) at least one reducing halide source; (D) at least one transition metal (Tm) alkoxide.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: May 19, 1992
    Assignee: The Dow Chemical Company
    Inventors: Joseph G. Schell, Jr., Gary R. Marchand, Larry A. Meiske
  • Blanking process for reaction mixture
    Patent number: 5089572
    Abstract: A process for blanking a reaction mixture utilizing as a blanking agent a difunctional lithium composition.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: February 18, 1992
    Assignee: The Dow Chemical Company
    Inventors: Gary R. Marchand, Joseph G. Schell, Jr., Brian W. Walther, Corwin J. Bredeweg
  • Catalyst and process for polymerizing olefins
    Patent number: 5045612
    Abstract: Olefins are polymerized under solution polymerization conditions in the presence of the solid catalytic product resulting from removing the liquid components from the product resulting from admixing in an inert diluent and in an atmosphere which excludes moisture and oxygen (A) at least one hydrocarbon soluble organomagnesium compound; (B) at least one organic hydroxyl-containing compound; (C) at least one reducing halide source; (D) at least one transition metal (Tm) alkoxide.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: September 3, 1991
    Assignee: The Dow Chemical Company
    Inventors: Joseph G. Schell, Jr., Larry A. Meiske, Gary R. Marchand
  • Transition metal containing catalyst
    Patent number: 4419269
    Abstract: A transition metal-containing catalyst is prepared by(A) reacting in the presence of an inert hydrocarbon diluent(1) the reaction product of(a) an organomagnesium compound;(b) water, carbon dioxide or an organic oxygen-containing compound; and(c) an electron donor or Lewis base;and(2) a transition metal halide;(B) recovering and washing the resultant solid reaction product with an inert hydrocarbon;(C) reacting the washed solid product from (B) with(1) titanium tetrachloride and(2) a reducing agent;(D) stirring the mixture until the brown .beta.-crystalline form of titanium trichloride is transformed into the violet .alpha.-crystalline form; and(E) recovering and washing the resultant solid catalyst with an inert hydrocarbon.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: December 6, 1983
    Assignee: The Dow Chemical Company
    Inventor: Joseph G. Schell, Jr.
  • Process for recovering palladium
    Patent number: 3961943
    Abstract: The inactive palladium-containing precipitate formed during the reaction of a carboxylic acid and an olefin to form an ester can be reactivated by the addition of a suitable reducing agent to a slurry of the precipitate in the ester.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: June 8, 1976
    Assignee: The Dow Chemical Company
    Inventor: Joseph G. Schell, Jr.