Patents by Inventor Shu-Chieh P. Wang

Shu-Chieh P. Wang 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).

  • Preparation of nitro compounds by vapor phase nitration of olefins
    Patent number: 4766257
    Abstract: A process for selectively forming nitrohydrocarbon compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an olefinic unsaturated compound having at least three carbon atoms with NO.sub.2 alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: September 12, 1984
    Date of Patent: August 23, 1988
    Assignee: W. R. Grace & Co.
    Inventor: Shu-Chieh P. Wang
  • Synthesis of aliphatic polyamines
    Patent number: 4721811
    Abstract: An improved process for selectively forming aliphatic polyamines from aliphatic polynitriles having 2 to 3 atoms between cyano groups by reacting aliphatic polynitrile, with hydrogen in the presence of a primary or secondary amine, through a fixed bed reactor while continuously contacting the reactants with granular Raney cobalt packed therein.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: January 26, 1988
    Assignee: W. R. Grace & Co.
    Inventors: Martin B. Sherwin, Shu-Chieh P. Wang, Stewart R. Montgomery
  • Preparation of nitro compounds by vapor phase nitration of aldehydes
    Patent number: 4524226
    Abstract: A process for selectively forming nitro compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an aldehyde having from two to ten carbon atoms with nitrogen dioxide alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: June 18, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Chieh P. Wang, Martin B. Sherwin
  • Preparation of nitro compounds by vapor phase nitration of carboxylic acids
    Patent number: 4517394
    Abstract: A process for selectively forming nitroalkanes and nitroaromatics by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an organic carboxylic acid having from two to ten carbon atoms with NO.sub.2 alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: May 14, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Chieh P. Wang, Martin B. Sherwin
  • Preparation of nitro compounds by vapor phase nitration of organic alcohols
    Patent number: 4517392
    Abstract: A process for selectively forming nitro compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an alcohol having from two to ten carbon atoms with nitrogen dioxide alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: May 14, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Chieh P. Wang, Martin B. Sherwin
  • Preparation of nitro compounds by vapor phase nitration of carboxylic acids
    Patent number: 4469904
    Abstract: A process for selectively forming nitro compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an organic carboxylic acid having from two to ten carbon atoms with NO.sub.2 or HNO.sub.3 alone or in the presence of oxygen and/or water.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: September 4, 1984
    Assignee: W. R. Grace & Co.
    Inventors: Shu-Chieh P. Wang, Martin B. Sherwin