Patents by Inventor Michael Rolf Eberhard

Michael Rolf Eberhard 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: 7491859
    Abstract: Process for the telomerization of a conjugated diene, wherein the conjugated diene is reacted with a compound containing an active hydrogen atom and having a formula R?—H in the presence of a telomerization catalyst based on: (a) a source of group VIII metal, (b) a bidentate ligand wherein the bidentate ligand has the general formula I R1R2M1-R-M2R3R4??(I) wherein M1 and M2 are independently P, As or Sb; R1, R2, R3 and R4 independently represent a monovalent aliphatic group; or R1, R2 and M1 together and/or R3, R4 and M2 together independently represent an optionally substituted aliphatic cyclic group with at least 5 ring atoms, of which one is the M1 or M2 atom, respectively; R represents a bivalent organic bridging group; and novel bidentate diphosphines which can be used in this process.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: February 17, 2009
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerald Pringle, Renata Helena van der Made
  • Patent number: 7084089
    Abstract: Process for the carbonylation of optionally substituted ethylenically unsaturated compounds by reaction with carbon monoxide and a coreactant in the presence of a catalyst system. The catalyst system includes (a) a source of Pt group metal cations, (b) a certain bidentate diphosphine composition. In addition a method to prepare such a bidentate diphosphine composition is described.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: August 1, 2006
    Assignee: Shell Oil Company
    Inventors: Michael Rolf Eberhard, Paul Gerard Pringle
  • Patent number: 7057082
    Abstract: Process for the telomerization of a conjugated diene, wherein the conjugated diene is reacted with a compound containing an active hydrogen atom and having a formula R?—H in the presence of a telomerization catalyst based on: (a) a source of group VIII metal, (b) a bidentate ligand wherein the bidentate ligand has the general formula I R1R2M1—R—M2R3R4??(I) wherein M1 and M2 are independently P, As or Sb; R1, R2, R3 and R4 independently represent a monovalent aliphatic group; or R1, R2 and M1 together and/or R3, R4 and M2 together independently represent an optionally substituted aliphatic cyclic group with at least 5 ring atoms, of which one is the M1 or M2 atom, respectively; R represents a bivalent organic bridging group; and novel bidentate diphosphines which can be used in this process.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: June 6, 2006
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerald Pringle, Renata Helena van der Made
  • Publication number: 20040242949
    Abstract: Process for the telomerization of a conjugated diene,
    Type: Application
    Filed: July 1, 2004
    Publication date: December 2, 2004
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerald Pringle, Renata Helena van der Made
  • Patent number: 6794553
    Abstract: Process for the telomerization of a conjugated diene, wherein the conjugated diene is reacted with a compound containing an active hydrogen atom and having a formula R′—H in the presence of a telomerization catalyst based on: (a) a source of group VIII metal, (b) a bidentate ligand wherein the bidentate ligand has the general formula I R1R2M1—R—M2R3R4  (I) wherein M1 and M2 are independently P, As or Sb; R1, R2, R3 and R4 independently represent a monovalent aliphatic group; or R1, R2 and M1 together and/or R3, R4 and M2 together independently represent an optionally substituted aliphatic cyclic group with at least 5 ring atoms, of which one is the M1 or M2 atom, respectively; R represents a bivalent organic bridging group; and novel bidentate diphosphines which can be used in this process.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: September 21, 2004
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerald Pringle, Renata Helena van der Made
  • Publication number: 20040024258
    Abstract: Process for the carbonylation of optionally substituted ethylenically unsaturated compounds by reaction with carbon monoxide and a coreactant in the presence of a catalyst system.
    Type: Application
    Filed: July 31, 2002
    Publication date: February 5, 2004
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerard Pringle
  • Patent number: 6639091
    Abstract: Bidentate ligand of formula II, R1R2M1—R—M2R3R4  (II) wherein M1 and M2 are independently P, As or Sb; R1, R2, R3 and R4 independently represent tertiary alkyl groups, or R1 and R2 together and/or R3 and R4 together represent an optionally substituted bivalent cycloaliphatic group whereby the two free valencies are linked to M1 or M2, and R represents a bivalent aliphatic bridging group containing from 2 to 6 atoms in the bridge, which is substituted with two or more substituents. A catalyst system comprising: a) a source of group VIII metal cations; b) a source of such a bidentate ligand; and c) a source of anions, and use of such a catalyst system in a process for the carbonylation of optionally substituted ethylenically or acetylenically unsaturated compounds by reaction with carbon monoxide and a coreactant is provided.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: October 28, 2003
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerard Pringle
  • Publication number: 20030130544
    Abstract: Process for the telomerization of a conjugated diene,
    Type: Application
    Filed: November 4, 2002
    Publication date: July 10, 2003
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerald Pringle, Renata Helena van der Made
  • Publication number: 20020016484
    Abstract: Bidentate ligand of formula II,
    Type: Application
    Filed: May 17, 2001
    Publication date: February 7, 2002
    Inventors: Eit Drent, Michael Rolf Eberhard, Paul Gerard Pringle