Patents by Inventor C. C. Chu

C. C. Chu 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).

  • Modified Raney nickel catalyst and a process for preparing diols by using the same
    Patent number: 5888923
    Abstract: The present invention relates to a modified Raney nickel catalyst which can serves as hydrogenation catalyst for hydroxy aldehydes, such as 4-hydroxy-butanal, and 2-methyl-3-hydroxypropanal and hydroxy cyclic ethers such as 2-hydroxy-tetrahydrofuran. Further, a process for preparing diols by using the modified Raney nickel catalyst is provided.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: March 30, 1999
    Assignee: Dairen Chemical Corporation
    Inventors: Shien Chang Chen, C. C. Chu, F. S. Lin, J. Y. Chou, C. C. Huang
  • Process for the preparation of tertiary olefins
    Patent number: 5227564
    Abstract: A process for the preparation of tertiary olefins by decomposition of a tertiary alkyl ether in the vapor phase in the presence of a catalyst, wherein the catalyst used is a composition of: (i) 5 to 95 percent by weight of a crystalline aluminosilicate zeolite having a silica-to-alumina mole ratio of at least about 5 and a Constraint Index of about 1 to about 12, and (ii) 95 to 5 percent by weight of a binder selected from amorphous silica, alumina, silica-alumina and mixtures thereof.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: July 13, 1993
    Assignee: Dairen Chemical Corporation
    Inventors: S. C. Chen, C. C. Chu, F. S. Lin, Liang Sheu, Shing Y. Wang
  • Production of acetic acid
    Patent number: 5189214
    Abstract: A process of preparing acetic acid by reacting a mixture of a methyl ester, an alcohol, and water preferably as a solution in aqueous acetic acid, with carbon monoxide, with or without hydrogen, at a selected partial pressure, in the presence of a catalyst, preferably composed of a nickel or nickel/molybdenum compound with phosphorus compounds as ligands, and a promoter composed of iodine compounds, at a predetermined temperature is disclosed.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: February 23, 1993
    Assignees: Dairen Chemical Corp., Chang Chun Petrochemical Co., Ltd.
    Inventors: S. C. Chen, C. C. Chu, F. S. Lin, F. J. Huang