Patents by Inventor Darchun B. Yang

Darchun B. Yang 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).

  • Free radically curable formulations employing dithiolate catalysts
    Patent number: 5411995
    Abstract: Xanthate, dithiocarbamate and dithiophosphate salts of transition metals, together with a coinitiator selected from organic halogen and tertiary amine compounds provide light activated initiator systems for radically polymerizable ethylenically unsaturated compounds such as (meth)acrylate esters.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: May 2, 1995
    Assignee: Loctite Corporation
    Inventor: Darchun B. Yang
  • Free radically curable formulations employing dithiolate catalysts
    Patent number: 5217760
    Abstract: Xanthate, dithiocarbamate and dithiophosphate salts of transition metals, together with a coinitiator selected from organic halogen and tertiary amine compounds provide light activated initiator systems for radically polymerizable ethylenically unsaturated compounds such as (meth)acrylate esters.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: June 8, 1993
    Assignee: Loctite Corporation
    Inventor: Darchun B. Yang
  • Peroxy cured (meth)acrylic ester compositions employing nitrite, borate, silicate or carbonate salt accelerators
    Patent number: 5126416
    Abstract: (Meth)acrylic ester formulations employing peroxy initiators have accelerated cure rates when the substrates to which they are applied, or the compositions themselves, include nitrite, borate, silicate or carbonate salts. The compositions should be free of acids having a PKa of 6 or less unless the composition also includes a transition metal compound.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: June 30, 1992
    Assignee: Loctite Corporation
    Inventor: Darchun B. Yang
  • Peroxy cured (meth)acrylic ester compositions employing metal dithiolate catalysts
    Patent number: 5039767
    Abstract: (Meth)acrylic ester formulations employing peroxy initiators have accelerated cure rates when the substrates to which they are applied, or the compositions themselves, include xanthate, dithiocarbamate or dithiophosphate salts of transition metals together with a sulfimide or similar co-accelerator compound.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: August 13, 1991
    Assignee: Loctite Corporation
    Inventor: Darchun B. Yang
  • Catalysts comprising ruthenium on titania surface modified with group VA oxide of vanadium, niobium or tantalum
    Patent number: 4861747
    Abstract: Catalyst compositions comprising ruthenium supported on a surface modified titania support wherein said support comprises a surface modifying oxide of tantalum, niobium or mixture thereof, in a noncrystalline form, supported on said titania are useful for Fischer-Tropsch hydrocarbon synthesis reactions.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: August 29, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Israel E. Wachs, Darchun B. Yang
  • Catalysts comprising ruthenium on titania surface modified with group Va oxide of vanadium, niobium or tantalum
    Patent number: 4711871
    Abstract: Catalyst compositions comprising ruthenium supported on a surface modified titania support wherein said support comprises a surface modifying oxide of vanadium, niobium, tantalum or mixture thereof, in a non-crystalline form, supported on said titania are useful for Fischer-Tropsch hydrocarbon synthesis reactions.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: December 8, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Israel E. Wachs, Darchun B. Yang
  • Peroxy cured (meth)acrylic ester compositions employing nitrite, borate, silicate or carbonate salt accelerators
    Patent number: RE35058
    Abstract: (Meth)acrylic ester formulations employing peroxy initiators have accelerated cure rates when the substrates to which they are applied, or the compositions themselves, include nitrite, borate, silicate or carbonate salts. The compositions should be free of acids having a PKa of 6 or less unless the composition also includes a transition metal compound.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: October 10, 1995
    Assignee: Loctite Corporation
    Inventor: Darchun B. Yang