Patents by Inventor Prachuab Kwanyuen

Prachuab Kwanyuen 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 for isolation of proteins from plant leaves
    Patent number: 4347324
    Abstract: Described herein is a process for isolating the enzymatic protein ribulose 1,5-diphosphate carboxylase from the green leaves of plants. In the process, which is particularly suited to obtaining the protein from tobacco, the leaves are ground or otherwise pulverized in the presence of a reducing agent. A liquid portion containing the desired protein is separated from the pulp and its pH adjusted to within the range of from about pH 6.0 to 5.3 and then cooled to cause the crystallization of the ribulose 1,5-diphosphate carboxylase. After separation of the crystalline material, the supernatant is acidified to yield lower molecular weight proteins.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: August 31, 1982
    Assignee: Leaf Proteins, Inc.
    Inventors: Samuel G. Wildman, Prachuab Kwanyuen
  • Process for isolation of ribulose 1,5-diphosphate carboxylase from plant leaves
    Patent number: 4268632
    Abstract: Described herein is a process for isolating the enzymatic protein ribulose 1,5-diphosphate carboxylase from the green leaves of plants. In the process, which is particularly suited to obtaining the protein from tobacco, the leaves are ground or otherwise pulverized in the presence of a reducing agent, followed by heating the resulting pulp to about 50.degree. C. A liquid portion containing the desired protein is separated from the pulp and then cooled to cause the crystallization of the ribulose 1,5-diphosphate carboxylase. After separation of the crystalline material, the supernatant is acidified to yield lower molecular weight proteins.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: May 19, 1981
    Assignee: Leaf Proteins, Inc.
    Inventors: Samuel G. Wildman, Prachuab Kwanyuen