Patents by Inventor Qinggao Ma

Qinggao Ma 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: 11952551
    Abstract: The presently claimed invention relates to a gear oil composition having a kinematic viscosity at 40° C. in the range of ?68 to ?1000 cSt when measured in accordance with ASTM D445. The gear oil composition is useful as a lubricant in a gear box, especially in a wind turbine gear box.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: April 9, 2024
    Assignee: BASF SE
    Inventors: Qinggao Ma, Rene Koschabek, Philippe Rabbat, Henrik Heinemann, Karolin Monz, Frank Rittig, Nawid Kashani, Markus Scherer
  • Publication number: 20220064563
    Abstract: The presently claimed invention relates to a gear oil composition having a kinematic viscosity at 40° C. in the range of ?68 to ?1000 cSt when measured in accordance with ASTM D445. The gear oil composition is useful as a lubricant in a gear box, especially in a wind turbine gear box.
    Type: Application
    Filed: December 18, 2019
    Publication date: March 3, 2022
    Inventors: Qinggao MA, Rene KOSCHABEK, Philippe RABBAT, Henrik HEINEMANN, Karolin MONZ, Frank RITTIG, Nawid KASHANI, Markus SCHERER
  • Patent number: 8648020
    Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are prepared without gel formation by heating to 280-360° C. under high pressure in a sealed reactor a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a hydrocarbon solvent having a boiling point below 280° C. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: February 11, 2014
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, Mitchel Cohn
  • Patent number: 8580716
    Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are reproducibly prepared without gel formation by heating to 280-360° C. a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a combination of high boiling hydrocarbon and organic diluent, wherein water is more than 8%, typically more than 10% of the reaction mixture. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: November 12, 2013
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, Cyril A. Migdal, Kirk A. Schlup, John-Louis DiFlavio, Ronald J. Muir
  • Publication number: 20130005620
    Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are prepared without gel formation by heating to 280-360° C. under high pressure in a sealed reactor a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a hydrocarbon solvent having a boiling point below 280° C. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.
    Type: Application
    Filed: April 26, 2012
    Publication date: January 3, 2013
    Applicant: CHEMTURA CORPORATION
    Inventors: Qinggao Ma, Mitchel Cohn
  • Publication number: 20120015853
    Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are reproducibly prepared without gel formation by heating to 280-360° C. a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a combination of high boiling hydrocarbon and organic diluent, wherein water is more than 8%, typically more than 10% of the reaction mixture. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.
    Type: Application
    Filed: June 23, 2011
    Publication date: January 19, 2012
    Applicant: CHEMTURA CORPORATION
    Inventors: Qinggao Ma, Cyril A. Migdal, Kirk A. Schlup, John-Louis DiFlavio, Ronald J. Muir
  • Patent number: 7846884
    Abstract: Lubricating oil compositions containing (a) at least one oil of lubricating viscosity and (b) an effective amount of at least one thio-functionalized phenylenediamine compound of the general formula: wherein R1, R2, R3, R4 and n are as defined herein are provided. Methods of operating an engine employing the lubricating oil composition are also provided.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: December 7, 2010
    Assignee: Chemtura Corporation
    Inventor: Qinggao Ma
  • Patent number: 7847125
    Abstract: A compound having the formula: R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring. The C3-C30 ring may be substituted with one or more substituents or unsubstituted. The C3-C30 ring may contain one or more heteroatoms. The C3-C30 ring may be saturated, partially unsaturated, or fully unsaturated.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: December 7, 2010
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, Cyril Migdal
  • Patent number: 7838703
    Abstract: A diaromatic amine compound having the general formula: wherein R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring, and R3 is an allyl, benzyl, or methallyl group. R4, R5, and R6 are independently hydrogen, C1-C30 alkyl group, C2-C30 alkenyl group, C3-C12 cycloalkyl group, C5-C25 aryl group, C6-C25 arylalkyl group, or C1-C30 alkoxy group.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: November 23, 2010
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, Cyril Migdal
  • Publication number: 20100048432
    Abstract: A surfactant blend of a low molecular weight surfactant and a high molecular weight surfactant to be used in an aqueous flooding. The surfactant blend may be neutralized with an alkali or alkaline agent. The surfactant blend may be mixed with a polymer. Surfactant blends of the present invention increase oil recoveries from oil reservoirs.
    Type: Application
    Filed: May 26, 2009
    Publication date: February 25, 2010
    Inventors: Michael T. Costello, Charles F. Irwin, Qinggao Ma, Naureen Stone
  • Patent number: 7608568
    Abstract: Tetraaromatic diamine compounds having the general formula: are provided wherein a is 0-3; b, c and d independently are integers from 0-5, R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a substituted or unsubstituted C3 to about C30 ring, saturated, partially unsaturated or fully unsaturated, optionally substituted with one or more heteroatoms, a is 0-3; b, c and d independently are integers from 0-5, R3, R4, R5 and R6 are independently hydrogen, a straight or branched C1-C30 alkyl or alkylene group optionally substituted with one or more substituents, a substituted or unsubstituted C3-C12 cycloalkyl, a substituted or unsubstituted C5-C25 aryl, a substituted or unsubstituted C6-C25 arylalkyl, a straight or branched C1-C30 alkoxy group optionally substituted with one or more substituents or two R4 substituents and/or two R5 substituents and/or two R6 substituents on adjacent carbon atoms of the aromatic ring associated therewith can be joined together to form
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: October 27, 2009
    Assignee: Chemtura Corporation
    Inventor: Qinggao Ma
  • Publication number: 20090240092
    Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one nitroso inhibitor of the structure: wherein R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, nitro, nitroso, halogen, COOR wherein R is hydrogen or alkyl, alkyl, and heteroatom-substituted alkyl; or adjacent groups R1, R2, R3, and R4 can be taken together to form a substituted or unsubstituted fused six-membered ring. Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) at least one nitroso compound of the above-described structure.
    Type: Application
    Filed: June 5, 2009
    Publication date: September 24, 2009
    Inventors: Qinggao MA, William A. Wortman, Jay Wang, Paul E. Stott
  • Patent number: 7585909
    Abstract: Disclosed herein are p-urea phenyl derivatives of the formula: wherein R1 and R2 are independently selected hydrocarbyl groups. These derivatives are useful as haze reducing agents in propylene polymers and copolymers.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: September 8, 2009
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, William A. Wortman, Abuzar Syed, Paul E. Stott, John M. Wefer, David J. Sikora
  • Patent number: 7572849
    Abstract: Disclosed herein are urea phenyl derivatives of the formula: wherein each R is an independently selected hydrocarbyl group and n is 2 or 3, and their use as nucleating agents for propylene polymers.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: August 11, 2009
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, William A. Wortman, Jin-yun Wang, Huiling Ding, Roy Russell, Leigh C. Allen, Paul E. Stott, John Wefer, David J. Sikora
  • Patent number: 7569630
    Abstract: Disclosed herein are aromatic amide derivatives of the formulae: wherein X1 and X2 are independently selected from the group consisting of —OH, —OR, —OM, —NH2, and —NHR; M is a metal; and R, R1, and R2 are independently selected hydrocarbyl groups.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: August 4, 2009
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, William A. Wortman, Abuzar Syed, Paul E. Stott, John M. Wefer, David J. Sikora
  • Patent number: 7553896
    Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one nitroso inhibitor of the structure: wherein R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, nitro, nitroso, halogen, COOR wherein R is hydrogen or alkyl, alkyl, and heteroatom-substituted alkyl; or adjacent groups R1, R2, R3, and R4 can be taken together to form a substituted or unsubstituted fused six-membered ring. Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) at least one nitroso compound of the above-described structure.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: June 30, 2009
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, William A. Wortman, Jay Wang, Paul E. Stott
  • Publication number: 20090131290
    Abstract: A compound having the formula: R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring. The C3-C30 ring may be substituted with one or more substituents or unsubstituted. The C3-C30 ring may contain one or more heteroatoms. The C3-C30 ring may be saturated, partially unsaturated, or fully unsaturated.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Inventors: Qinggao Ma, Cyril Migdal
  • Publication number: 20090131293
    Abstract: A diaromatic amine compound having the general formula: wherein R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring, and R3 is an allyl, benzyl, or methallyl group. R4, R5, and R6 are independently hydrogen, C1-C30 alkyl group, C2-C30 alkenyl group, C3-C12 cycloalkyl group, C5-C25 aryl group, C6-C25 arylalkyl group, or C1-C30 alkoxy group.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Inventors: Qinggao Ma, Cyril Migdal
  • Publication number: 20070293609
    Abstract: Disclosed herein are aromatic amide derivatives of the formulae: wherein X1 and X2 are independently selected from the group consisting of —OH, —OR, —OM, —NH2, and —NHR; M is a metal; and R, R1, and R2 are independently selected hydrocarbyl groups.
    Type: Application
    Filed: June 14, 2006
    Publication date: December 20, 2007
    Inventors: Qinggao Ma, William A. Wortman, Abuzar Syed, Paul E. Stott, John M. Wefer, David J. Sikora
  • Publication number: 20070272894
    Abstract: Tetraaromatic diamine compounds having the general formula: are provided wherein a is 0-3; b, c and d independently are integers from 0-5, R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a substituted or unsubstituted C3 to about C30 ring, saturated, partially unsaturated or fully unsaturated, optionally substituted with one or more heteroatoms, a is 0-3; b, c and d independently are integers from 0-5, R3, R4, R5 and R6 are independently hydrogen, a straight or branched C1-C30 alkyl or alkylene group optionally substituted with one or more substituents, a substituted or unsubstituted C3-C12 cycloalkyl, a substituted or unsubstituted C5-C25 aryl, a substituted or unsubstituted C6-C25 arylalkyl, a straight or branched C1-C30 alkoxy group optionally substituted with one or more substituents or two R4 substituents and/or two R5 substituents and/or two R6 substituents on adjacent carbon atoms of the aromatic ring associated therewith can be joined together to form
    Type: Application
    Filed: February 13, 2007
    Publication date: November 29, 2007
    Inventor: Qinggao Ma