Patents by Inventor Wenchun Chao

Wenchun Chao 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: 8765754
    Abstract: A compound of formula (I): wherein all symbols have the same meanings as defined in the specification; a salt thereof, a solvate thereof, an N-oxide thereof, or a prodrug thereof, has a Btk inhibitory activity, and is useful as a method for preventing and/or treating a rheumatoid arthritis, an autoimmune disease, a B cell lymphoma of cancer, and the like.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: July 1, 2014
    Assignee: Locus Pharmaceuticals, Inc.
    Inventors: Zenon Konteatis, Kristofer Moffett, Younghee Lee, Wenchun Chao, Dora Do-York Wong
  • Publication number: 20120232054
    Abstract: A compound of formula (I): wherein all symbols have the same meanings as defined in the specification; a salt thereof, a solvate thereof, an N-oxide thereof, or a prodrug thereof, has a Btk inhibitory activity, and is useful as a method for preventing and/or treating a rheumatoid arthritis, an autoimmune disease, a B cell lymphoma of cancer, and the like.
    Type: Application
    Filed: April 28, 2010
    Publication date: September 13, 2012
    Applicant: LOCUS PHARMACEUTICALS, INC.
    Inventors: Kevin J. Moriarty, Dora Do-York Wong, Zenon Konteatis, Kristofer Moffett, Younghee Lee, Wenchun Chao
  • Patent number: 6759439
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process preferably includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: July 6, 2004
    Assignee: ConocoPhillips Company
    Inventors: Wenchun Chao, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian
  • Patent number: 6727289
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least a Fischer-Tropsch metal and boron. The Fischer-Tropsch metal preferably includes cobalt and optionally ruthenium or platinum. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: April 27, 2004
    Assignee: ConocoPhillips Company
    Inventors: Olga Ionkina, Wenchun Chao, Munirpallam A. Subramanian, Leo E. Manzer, Kamel M. Makar, Ajoy P. Raje
  • Publication number: 20030119922
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process preferably includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 26, 2003
    Inventors: Wenchun Chao, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian
  • Patent number: 6489371
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process preferably includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: December 3, 2002
    Assignee: Conoco Inc.
    Inventors: Wenchun Chao, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian
  • Publication number: 20020173555
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least a Fischer-Tropsch metal and boron. The Fischer-Tropsch metal preferably includes cobalt and optionally ruthenium or platinum. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Application
    Filed: January 14, 2002
    Publication date: November 21, 2002
    Applicant: Conoco Inc.
    Inventors: Olga Ionkina, Wenchun Chao, Munirpallam A. Subramanian, Leo E. Manzer, Kamel M. Makar, Ajoy P. Raje
  • Publication number: 20020045671
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process preferably includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Application
    Filed: August 24, 2001
    Publication date: April 18, 2002
    Inventors: Wenchun Chao, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian
  • Publication number: 20020010221
    Abstract: A catalyst useful for the production of hydrocarbons from synthesis gas, in the Fischer-Tropsch reaction, is disclosed. The catalyst includes cobalt and rhenium and may be supported on an alumina support. The catalyst further includes a promoter selected from among boron, manganese, vanandium, phosphorous, and the alkali metals. The promoter preferably improves the activity for the production of hydrocarbons by at least about 5%. The improved activity may be an increased productivity, increased CO conversion, and the like. The hydrocarbons may have a weight range useful for making diesel fuel, (e.g. C11+ hydrocarbons). Alternately, the hydrocarbons may have a weight range useful for making gasoline (e.g. C5+ hydrocarbons). The catalyst may be made by co-dispersing the promoter with the cobalt or by layering the promoter over the cobalt.
    Type: Application
    Filed: March 12, 2001
    Publication date: January 24, 2002
    Inventors: Olga Ionkina, Munirpallam A. Subramanian, Wenchun Chao, Kamel M. Makar, Leo E. Manzer
  • Patent number: 6333294
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: December 25, 2001
    Assignee: Conoco Inc.
    Inventors: Wenchun Chao, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian