Patents by Inventor Shih-Yu Ma

Shih-Yu Ma 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).

  • Fungicidal azole derivatives
    Patent number: 5691363
    Abstract: Compounds having the formula ##STR1## wherein Q is ##STR2## R.sup.1 is C.sub.1 -C.sub.8 alkyl; R.sup.2 is C.sub.4 -C.sub.17 heterocyclic aryl, unsubstituted or substituted with one or more C.sub.1 -C.sub.6 alkyl, halo or nitro, containing a sulfur atom, a nitrogen atom, or one or two oxygen atoms;X is nitrogen; andn is 2, 3 or 4,or a stereoisomer thereof. These compounds are useful as fungicides.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: November 25, 1997
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Shih-Yu Ma, Robert Allan Davis
  • Fungicidal azole derivatives
    Patent number: 5574056
    Abstract: Compounds having the formula ##STR1## wherein Q is ##STR2## R.sup.1 is C.sub.1 -C.sub.8 alkyl; R.sup.2 is C.sub.6 -C.sub.18 aryl, unsubstituted or substituted with one or more C.sub.1 -C.sub.6 alkyl, halo, C.sub.1 -C.sub.6 alkoxy or C.sub.1 -C.sub.6 haloalkyl; or C.sub.4 -C.sub.17 heterocyclic aryl comprising one or more oxygen or nitrogen atoms;X is nitrogen or --CH--; andn is 2, 3 or 4,or a stereoisomer thereof, with the proviso that when Q is ##STR3## and X is N, then R.sup.2 is not phenyl or substituted phenyl. These compounds are useful as fungicides.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 12, 1996
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Shih-Yu Ma, Robert A. Davis
  • Alkylation of substituted sulfonylpyridines
    Patent number: 4503230
    Abstract: A process for making a compound of the formula ##STR1## is disclosed wherein: R is C.sub.1 -C.sub.12 alkyl, allyl or benzyl,R.sup.1 and R.sup.2 are hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, or phenyl,R.sup.3 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, CF.sub.3, NO.sub.2, phenyl or phenoxy, m is an integer from 1 to 3 andn is zero or 1,by contacting a compound of said formula where R is hydrogen with certain halohydrocarbons in the presence of solid KOH, a phase transfer catalyst, a solvent and an effective amount of water. The process of this invention permits production of the above compound, useful as a herbicide, without the need for cocatalysts or excess high concentration of NaOH and water.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: March 5, 1985
    Assignee: Uniroyal, Inc.
    Inventors: John A. Minatelli, Shih-Yu Ma
  • Organotin sulfinates as insecticides and acaricides
    Patent number: 4209452
    Abstract: Organotin sulfinates are useful for controlling insects and acarids. Certain of these organotin sulfinates are novel compounds.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: June 24, 1980
    Assignee: Uniroyal, Inc.
    Inventors: Richard J. Strunk, Winchester L. Hubbard, Shih-Yu Ma
  • Organotin sulfinates as insecticides and acaricides
    Patent number: 4089972
    Abstract: Organotin sulfinates are useful for controlling insects and acarids. Certain of these organotin sulfinates are novel compounds.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: May 16, 1978
    Assignee: Uniroyal, Inc.
    Inventors: Richard John Strunk, Winchester Loomis Hubbard, Shih-Yu Ma