Patents by Inventor Weidong Tong

Weidong Tong 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).

  • PROCESS AND INTERMEDIATES FOR THE PREPARATION OF (1R,2S,5S)-6,6-DIMETHYL-3-AZABICYCLO[3,1,0]HEXANE-2-CARBOXYLATES OR SALTS THEREOF
    Publication number: 20090247784
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I. and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Application
    Filed: June 15, 2009
    Publication date: October 1, 2009
    Inventors: Jeonghan Park, Anantha R. Sudhakar, George S. Wong, Minzhang Chen, Juergen Weber, Xiaojing Yang, Daw-Jong Kwok, Ingyu Jeon, Ramani R. Raghavan, Maria Tamarez, Weidong Tong, Eugene J. Vater
  • Process and intermediates for the preparation of (1R,2S,5S)-6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylates for salts thereof
    Patent number: 7569705
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I. and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: August 4, 2009
    Assignee: Schering Corporation
    Inventors: Jeonghan Park, Anantha R Sudhakar, George S. K. Wong, Minzhang Chen, Juergen Weber, Xiaojing Yang, Daw-long Kwok, Ingyu Jeon, Ramani R Raghavan, Maria Tamarez, Weidong Tong, Eugene J. Vater
  • Synthesis of (4-bromophenyl)(4-piperidyl)methanone-(Z)-O-ethyloxime and salts
    Patent number: 7524963
    Abstract: In one embodiment, the present invention describes the synthesis of (4-bromophenyl) (4-piperidyl)methanone-(Z)-O-ethyloxime and its acid salts, and similar compounds, in high stereochemical purity.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: April 28, 2009
    Assignee: Schering Corporation
    Inventors: George S. K. Wong, Jeonghan Park, Weidong Tong, Ramani R. Raghavan
  • Microtextured Implants and Methods of Making Same
    Publication number: 20090008365
    Abstract: The present invention concerns a process for etching metal by contacting the metal with a solution comprising hydrogen chloride and a persulfate salt; wherein the solution has a hydrogen chloride concentration of about 3 to about 11.7 moles/liter and a molar ratio of hydrogen chloride to persulfate salt of about 4:1 to about 134:1, wherein the persulfate salt is dissolved in the solution with the use of heat input.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 8, 2009
    Applicant: DEPUY PRODUCTS, INC.
    Inventors: Weidong Tong, Lawrence Salvati
  • Process and intermediates for the preparation of (1R,2S,5S)-6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylates for salts thereof
    Publication number: 20080114179
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I. and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Application
    Filed: November 6, 2007
    Publication date: May 15, 2008
    Inventors: Jeonghan Park, Anantha Sudhakar, George Wong, Minzhang Chen, Juergen Weber, Xiaojing Yang, Daw Kwok, Ingyu Jeon, Ramani Raghavan, Maria Tamarez, Weidong Tong, Eugene Vater
  • Process and intermediates for the preparation of (1R,2S,5S)-6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylates or salts thereof
    Patent number: 7309717
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I. and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: December 18, 2007
    Assignee: Schering Corporation
    Inventors: Jeonghan Park, Anantha Sudhakar, George S. Wong, Minzhang Chen, Juergen Weber, Xiaojing Yang, Daw-Jong Kwok, Ingyu Jeon, Ramani R. Raghavan, Maria Tamarez, Weidong Tong, Eugene J. Vater
  • Synthesis of (4-bromophenyl)(4-piperidy)methanone-(Z)-O-ethyloxime and salts
    Publication number: 20050171159
    Abstract: In one embodiment, the present invention describes the synthesis of (4-bromophenyl) (4-piperidyl)methanone-(Z)-O-ethyloxime and its acid salts, and similar compounds, in high stereochemical purity.
    Type: Application
    Filed: April 4, 2005
    Publication date: August 4, 2005
    Inventors: George Wong, Jeonghan Park, Weidong Tong, Ramani Raghavan
  • Synthesis of (4-bromopnenyl)(4-piperidyl)methanone-(Z)-O-ethyloxime and salts
    Patent number: 6914142
    Abstract: In one embodiment, the present invention describes the synthesis of (4-bromophenyl) (4-piperidyl)methanone-(Z)—O-ethyloxime and its acid salts, and similar compounds, in high stereochemical purity.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: July 5, 2005
    Assignee: Schering Corporation
    Inventors: George S. K. Wong, Jeonghan Park, Weidong Tong, Ramani Raghavan
  • Process and intermediates for the preparation of (1R,2S,5S)-6,6-dimethyl-3-azabicyclo[3,1,0]hexane-2-carboxylates or salts thereof
    Publication number: 20050059648
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I. and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Application
    Filed: June 15, 2004
    Publication date: March 17, 2005
    Inventors: Jeonghan Park, Anantha Sudhakar, George Wong, Minzhang Chen, Juergen Weber, Xiaojing Yang, Daw-Jong Kwok, Ingyu Jeon, Ramani Raghavan, Maria Tamarez, Weidong Tong, Eugene Vater
  • Synthesis of (4-bromopnenyl)(4-piperidyl)methanone-(Z)-O-ethyloxime and salts
    Publication number: 20030092731
    Abstract: In one embodiment, the present invention describes the synthesis of (4-bromophenyl) (4-piperidyl)methanone-(Z)-O-ethyloxime and its acid salts, and similar compounds, in high stereochemical purity.
    Type: Application
    Filed: October 11, 2002
    Publication date: May 15, 2003
    Applicant: SCHERING CORPORATION
    Inventors: George S.K. Wong, Jeonghan Park, Weidong Tong, Ramani R. Raghavan