Patents by Inventor Hao Ku

Hao Ku 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: 6313294
    Abstract: The present invention provides a process for preparing an amide, which comprises reacting an amine with an ester in a molten form in the absence of a solvent.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 6, 2001
    Assignee: Development Center for Biotechnology
    Inventors: Wen-Chih Chou, Chang-Wei Tan, Shyh-Fong Chen, Hao Ku
  • Patent number: 5989900
    Abstract: A process for preparing optically active allylic alcohol derivatives comprises reacting a racemic mixture of the following formula I ##STR1## wherein R is alkyl, alkenyl, or substituted or unsubstituted aryl or arylalkyl;with acetate or anhydride under the catalysis of Pseudomonase AK, PS or K-10 lipase in the presence of an organic solvent.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: November 23, 1999
    Assignee: Development Center of Biotechnology
    Inventors: Adam Shih-Yuan Lee, Hsiu-Chih Yeh, Ohm-Guo Pan, Shyh-Fong Chen, Hao Ku
  • Patent number: 5625069
    Abstract: A process of preparing 2-cyano-3,5-dimethyl-4-methoxypyridine. The process includes the steps of: acylating 2-methyl-1-penten-1-alkoxy-3-one to obtain 2-alkoxycarbonyl-3,5-dimethyl-4-pyrone; ammonolyzing 2-alkoxycarbonyl-3,5-dimethyl-4-pyrone to obtain 2-carboxamido-3,5-dimethyl-4(1H)-pyridone; methylating 2-carboxamido-3,5-dimethyl-4(1H)-pyridone to obtain 2-carboxamido-3,5-dimethyl-4-methoxypyridine; and dehydrating said 2-carboxamido-3,5-dimethyl-4-methoxypyridone to obtain 2-cyano-3,5-dimethyl-4-methoxypyridine.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: April 29, 1997
    Assignee: Development Center for Biotechnology
    Inventors: Shan-Yen Chou, Tsai-Mien Huang, Shyh-Fong Chen, Hao Ku
  • Patent number: 5616713
    Abstract: A process of preparing 2-hydroxymethyl-3,5-dimethyl-4-methoxypyridine including the steps of acylating 2-methyl-1-penten-1-alkoxy-3-one to obtain 2-alkoxycarbonyl-3,5-dimethyl-4-pyrone; ammonolyzing 2-alkoxycarbonyl-3,5-dimethyl-4-pyrone to obtain 2-alkoxycarbonyl-3,5-dimethyl-4(1H)-pyridone; halogenating 2-alkoxycarbonyl-3,5-dimethyl-4(1H)-pyridone to obtain 2-alkoxycarbonyl-4-halo-3,5-dimethylpyridine; methoxylating 2-alkoxycarbonyl-4-halo-3,5-dimethylpyridine to obtain 2-methoxycarbonyl-3,5-dimethyl-4-methoxypyridine; and reducing 2-methoxycarbonyl-3,5-dimethyl-4-methoxypyridine to obtain 2-hydroxymethyl-3,5-dimethyl-4-methoxypyridine.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: April 1, 1997
    Assignee: Development Center for Biotechnology
    Inventors: Shan-Yen Chou, Tsai-Mien Huang, Shyh-Fong Chen, Hao Ku
  • Patent number: 4960925
    Abstract: A number of novel peracid precursors each have the general structure: ##STR1## wherein: Z is a leaving group, the conjugate acid of the leaving group being in the range of from about 4 to 15; R is a substituted or unsubstituted alkyl or alkenyl group having from about 1 to 18 carbon atoms; and M is hydrogen or an alkali or alkaline earth metal. A method is also disclosed for synthesizing a product as represented above wherein succinic anhydride, including an R constituent as defined above is dissolved in a water-miscible, non-nucleophilic solvent and an acid including a Z constituent as defined above is neutralized and deprotonated to form a nucleophile, the substituted anhydride and the nucleophile being combined to form the product. The product is a component in a dry bleach product, optionally including other adjuncts.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: October 2, 1990
    Assignee: The Clorox Company
    Inventors: Dale S. Steichen, Hao Ku, Sheldon N. Lewis
  • Patent number: 4790952
    Abstract: A number of novel peracid precursors each have the general structure: ##STR1## wherein: Z is a leaving group, the conjugate acid of the leaving group being in the range of from about 4 to 15; R is a substituted or unsubstituted alkyl or alkenyl group having from about 1 to 18 carbon atoms; and M is hydrogen or an alkali or alkaline earth metal. A method is also disclosed for synthesizing a product as represented above wherein succinic anhydride, including an R constituent as defined above is dissolved in a water-miscible, non-nucleophilic solvent and an acid including a Z constituent as defined above is neutralized and deprotonated to form a nucleophile, the substituted anhydride and the nucleophile being combined to form the product. The product is a component in a dry bleach product, optionally including other adjuncts.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: December 13, 1988
    Assignee: The Clorox Company
    Inventors: Dale S. Steichen, Hao Ku, Sheldon N. Lewis
  • Patent number: 4659519
    Abstract: The invention relates to a novel process for synthesizing surface active peroxyacid bleaching agents and compositions which are named .alpha. or .beta. alkyl monoperoxysuccinic acids and have the general structure ##STR1## wherein R is an unsubstituted or substituted straight chain alkyl of 6 to 16 carbon atoms, unsubstituted or substituted branched chain alkyl of 6 to 20 carbon atoms, or a phenyl group substituted with one or more of H, alkyl of 1 to 14 carbon atoms, F, Cl, NO.sub.3, OSO.sub.3 M, SO.sub.3 M, or COOM, and M is further defined as H, an alkali metal or ammonium cation.The invention provides a novel process for synthesizing these alkyl monoperoxysuccinic acids which is relatively inexpensive, high yielding, and safe.The bleaching compositions are useful for bleaching fabrics and other laundering purposes. The bleaching compositions of the invention may also contain peroxyacid stabilizers, builders, fillers, and surfactants.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: April 21, 1987
    Assignee: The Clorox Company
    Inventor: Hao Ku