Patents by Inventor John T. Suh

John T. Suh 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: 4472584
    Abstract: Compounds of the formula: ##STR1## wherein Ar is heteroaryl, cycloalkyl having from 3 to 7 carbon atoms, naphthyl, indanyl, indenyl, tetrahydro naphthyl, or a radical of the formula ##STR2## wherein each of R.sub.5, R.sub.6 and R.sub.7 is independently H, alkyl, aryl, halo, lower alkoxy, nitro, amino, alkylmercapto, cyano, carboxy, carbalkoxy, sulfamyl, trifluoromethyl, hydroxy, acyloxy, methanesulfonyl, alkylamino or acylamino; and R.sub.5 and R.sub.6 when taken together, form a methylenedioxy; Z is alkylene containing 1 to about 5 carbon atoms in the principal chain; each R.sub.1 is independently hydrogen, alkyl or alkoxyalkyl, with the proviso that only one R.sub.1 may be hydrogen; R.sub.2 is lower alkyl; R.sub.3 is hydroxyalkyl containing 2 to 4 carbon atoms and R.sub.4 is H, alkyl, cycloalkyl or hydroxyalkyl containing 2 to 4 carbon atoms; wherein the alkyl, alkoxy, and acyl groups contain up to 10 carbon atoms, and their pharmaceutically-acceptable salts are disclosed.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: September 18, 1984
    Assignee: USV Pharmaceutical Corporation
    Inventors: Bernard Loev, Howard Jones, John T. Suh
  • Patent number: 4440941
    Abstract: Compounds of the structure ##STR1## wherein: Q is oxygen, sulfur or imino.X and Y are hydrogen, halogen, hydroxy, alkoxy, trifluoromethyl, nitro, carboxy, cyano, sulfonamido, sulfhydryl, alkyl, alkenyl, alkynyl, alkanoyl, alkylmercapto, amino, alkylamino, dialkylamino, alkysulfinyl, and alkylsulfonyl and may be the same or different;R.sub.1 is hydrogen, alkanoyl, substituted alkanoyl wherein the substituent is hydroxy, amino or cycloalkyl, aroyl, arylalkanoyl, or cycloalkylcarbonyl,n is an integer from 1 to 4 inclusive,R.sub.2 and R.sub.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: April 3, 1984
    Assignee: USV Pharmaceutical Corporation
    Inventors: John T. Suh, Paul R. Menard, Howard Jones
  • Patent number: 4354027
    Abstract: New substituted triazoloquinoxalin-4-ones are described as well as the use thereof as anti-hypertensive agents.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: October 12, 1982
    Assignee: USV Pharmaceutical Corporation
    Inventors: Bernard Loev, John T. Suh, Bruce E. Williams, Vassil St. Georgiev
  • Patent number: 4347246
    Abstract: A compound of the formula ##STR1## wherein: R.sub.1 is independently lower alkyl having from 1 to 6 carbon atoms, lower alkenyl having from 2 to 6 carbon atoms, lower alkynyl having from 2 to 6 carbon atoms, hydroxy, hydroxyalkyl, alkoxy, thio, thioalkyl, alkylmercapto, amino, aminoalkyl, alkylamino, nitro, cyano, alkanoyl, carboxy, carboxyalkyl, carbalkoxy, carbalkoxyalkyl, halogen, alkylsulfoxy, alkylsulfonyl, sulfonyl, sulfonamido, trifluoromethyl, or methylenedioxy, wherein the alkyl group in hydroxyalkyl, thioalkyl, aminoalkyl, carboxyalkyl, alkoxy, alkylmercapto, alkylsulfoxy, alkanoyl, carbalkoxy, and carbalkoxyalkyl has from 1 to 6 carbon atoms,n is an integer from 1 to 4 inclusive,R.sub.2 is selected from the group consisting of hydrogen and cycloalkyl, wherein the cycloalkyl group contains from 3 to 16 carbon atoms,R.sub.3 and R.sub.4 are hydrogen, andY is oxygen, sulphur, .dbd.NR.sub.1, .dbd.NOR.sub.1 or .dbd.N--NH.sub.2, R.sub.1 being the same as defined above.
    Type: Grant
    Filed: May 15, 1980
    Date of Patent: August 31, 1982
    Assignee: USV Pharmaceutical Corporation
    Inventors: John T. Suh, Bruce E. Williams, Jerry W. Skiles, Bernard Loev
  • Patent number: 4342692
    Abstract: Compounds of the formulae: ##STR1## wherein, Z and Y are each alkylene containing one to about five carbon atoms in the principal chain or said alkylene substituted with OH, alkanoyloxy, alkoxy, mercapto or alkylmercapto;each of R.sub.1, R.sub.2 and R.sub.3 is independently H, alkyl, aryl, halo, alkoxy, alkenyloxy, alkylsulfinyl, alkylsulfonyl, alkylmercapto, cyano, carboxy, carbalkoxy, carboxamido, sulfamoyl, trifluoromethyl, hydroxy, hydroxyalkyl, acyloxy, alkylamino, sulfonylamino, or acylamino; and R.sub.1 and R.sub.2, when taken together, form a methylenedioxy or --O--CO--O--;Ar is heteroaryl, cycloalkyl or ##STR2## wherein, R.sub.1, R.sub.2 and R.sub.3 are as hereindescribed; andR is H, alkyl, cycloalkyl, aryl, aralkyl, alkenyl, alkynyl, carboalkoxy, or CONR.sub.4 R.sub.5 wherein each of R.sub.4 and R.sub.5 is H or alkyl; wherein the total number of carbon atoms in each hydrocarbyl group is up to 10;and ##STR3## wherein, each of R.sub.1 and R.sub.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: August 3, 1982
    Assignee: USV Pharmaceutical Corporation
    Inventors: John T. Suh, Rack H. Chung, Nai-Yi Wang, Jeffrey N. Barton
  • Patent number: 4304771
    Abstract: Compounds of the structure: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are hydrogen, alkyl, alkenyl, alkynyl, phenyl-alkyl, or cycloalkyl,n is an integer from 0 to 4 inclusive,M is heterocyclic or heterocyclic alkyl,Y is hydroxy, alkoxy, amino, or substituted amino, amino-alkanoyl, aryloxy, aminoalkoxy, or hydroxyalkoxy, andR.sub.7 is hydrogen, alkanoyl, carboxylalkanoyl, hydroxyalkanoyl, amino-alkanoyl, cyano, amidino, carbalkoxy, ZS, or ##STR2## wherein Z is hydrogen, alkyl, kydroxyalkyl, aminoalkyl or the radical ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, n, M and Y are as described above; and where Y is hydroxy their nontoxic, pharmaceutically acceptable alkali metal, alkaline earth metal, and amine salts.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: December 8, 1981
    Assignee: USV Pharmaceutical Corporation
    Inventors: John T. Suh, Jerry W. Skiles, Bruce E. Williams, Alfred Schwab
  • Patent number: 4287203
    Abstract: Antihypertensive compounds of the structure ##STR1## wherein: n is an integer from 0 to 2 inclusive,R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 are independently hydrogen, alkyl having from 1 to 6 carbon atoms, alkenyl having from 2 to 6 carbon atoms, alkynyl having from 2 to 6 carbon atoms, cycloalkyl having from 3 to 16 carbon atoms, phenyl, benzyl, tolyl, naphthyl, phenethyl, indanyl, tetrahydronaphthyl, decanydronaphthyl, pyridyl, quinolyl, pyrrolidyl, pyrrolyl, morpholinyl, thiomorpholinyl, furyl, furfuryl, tetrahydrofurfuryl, benzimidazole, thienyl, imidolyl, or tetrahydroindolyl, and where the R.sub.1 to R.sub.7 groups are alkyl, said groups carrying a substituent selected from hydroxy, alkoxy, amino, carboxy, or carbalkoxy, the alkyl group in alkoxy and carbalkoxy having from 1 to 6 carbon atoms, or R.sub.2 taken together with R.sub.3 and the carbons to which they are attached is tetrahydronaphthyl or phenyl, and when phenyl R.sub.1 and R.sub.4 are absent, or R.sub.6 and R.sub.
    Type: Grant
    Filed: April 23, 1980
    Date of Patent: September 1, 1981
    Assignee: USV Pharmaceutical Corporation
    Inventors: John T. Suh, Bruce E. Williams, Jerry W. Skiles, Bernard Loev
  • Patent number: 4256761
    Abstract: Compounds of the structure: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are hydrogen, alkyl, alkenyl, alkynyl, phenyl-alkyl, or cycloalkyl,n is an integer from 0 to 4 inclusive,M is alkenyl, alkynyl, cycloalkyl, cycloalkyl-alkyl, polycycloalkyl, polycyclo-alkyl-alkyl, aryl, aralkyl, heteroaryl, heteroaryl-alkyl, hetero-cycloalkyl, hetero-cycloalkyl-alkyl, alkoxyalkyl, alkylthioalkyl, alkylamino-alkyl, dialkylamino-alkyl, fused aryl-cycloalkyl, fused aryl-cycloalkyl-alkyl, fused heteroaryl-cycloalkyl, or fused heteroaryl-cycloalkyl-alkyl,Y is hydroxy, alkoxy, amino, or substituted amino, aminoalkanoyl, aryloxy, aminoalkoxy, or hydroxyalkoxy, andR.sub.7 is hydrogen, alkanoyl, carboxylalkanoyl, hydroxyalkanoyl, amino-alkanoyl, cyano, amidino, carbalkoxy, ZS, or ##STR2## wherein Z is hydrogen, alkyl, hyroxyalkyl, aminoalkyl or the radical ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.
    Type: Grant
    Filed: July 13, 1979
    Date of Patent: March 17, 1981
    Assignee: USV Pharmaceutical Corporation
    Inventors: John T. Suh, Jerry W. Skiles, Bruce E. Williams, Alfred Schwab
  • Patent number: 4192805
    Abstract: The compounds 2-N-[1,1-hydrogen or C.sub.1 -C.sub.4 -alkyl-2(3,4-methylenedioxyphenyl)ethyl]amino-1-(3-alkoxy-carbonyl or hydroxymethyl-4-benzyloxyphenyl) ethanol compounds, and the process of making these compounds. There is also disclosed a process of making the compounds 2-N-[1,1-hydrogen or C.sub.1 -C.sub.4 -alkyl-2(3,4-methylenedioxyphenyl)ethyl]amino-1-(3-hydroxy-4-hydroxy)ethan ol.
    Type: Grant
    Filed: September 8, 1978
    Date of Patent: March 11, 1980
    Assignee: Nicholas International Limited
    Inventors: John T. Suh, Thomas M. Bare
  • Patent number: 4073798
    Abstract: A process for preparing a compound of the formula ##STR1## wherein R and R.sup.1 independently are selected from hydrogen and C.sub.1 -C.sub.4 alkyl groups, which comprises catalytically hydrogenating a compound of formula ##STR2## wherein R and R.sup.1 are as defined above and X is halogen using platinum oxide as catalyst.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: February 14, 1978
    Assignee: Nicholas International Limited
    Inventor: John T. Suh
  • Patent number: 4048104
    Abstract: Polyisocyanate prepolymers for use in preparing polyurethane products elastomers, adhesives and foams, are prepared by combining (1) organic polyisocyanate with (2) polyols which are the hydroxyl-terminated digestion products of (a) waste or scrap polyalkylene terephthalate polymers and (b) organic polyols. Polyurethane products resulting from the polyisocyanate prepolymers exhibit useful and unexpected properties.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: September 13, 1977
    Assignee: Freeman Chemical Corporation
    Inventors: Glenn R. Svoboda, John T. Suh, William L. Carlstrom, Gary L. Maechtle
  • Patent number: 4022910
    Abstract: L-3-Hydroxymethyltyrosine and pharmaceutically acceptable salts thereof useful in lowering blood pressure and compositions thereof.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: May 10, 1977
    Assignee: Richardson-Merrell Inc.
    Inventors: John T. Suh, Richard A. Schnettler
  • Patent number: 4018891
    Abstract: The method comprises administering to an animal a novel pharmaceutical composition containing a substituted-1-oxo-1H-2-benzothiopyran-3-carboxylic acid to inhibit antigen-antibody reaction in said animal. Representative of the compounds that can be used in the method are:1-Oxo-1H-2-benzothiopyran-3-carboxylic acid, andSodium 6-methoxy-1-oxo-1H-2-benzothiopyran-3-carboxylate.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: April 19, 1977
    Assignee: Richardson-Merrell Inc.
    Inventors: Thomas M. Bare, John T. Suh
  • Patent number: 3997608
    Abstract: The compounds are N-substituted-dihydroxyphenethylamines which are cardiotonic agents, central nervous system depressants and analgetic agents. Representative of the compounds disclosed is N-(3,4-dihydroxyphenisobutyl)-.beta.-isopropyl-3,4-dihydroxyphenethylamine .
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: December 14, 1976
    Assignee: Richardson-Merrell Inc.
    Inventor: John T. Suh
  • Patent number: 3987185
    Abstract: The method comprises administering to an animal an amount of substituted-1-oxo-1H-2-benzopyran-3-carboxylic acid effective to inhibit antigen-antibody reaction in said animal. Representative of the compounds that can be used in the method is sodium 1-oxo-1H-2-benzopyran-3-carboxylate.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: October 19, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Thomas M. Bare, John T. Suh
  • Patent number: 3952036
    Abstract: The compounds are ferrocene derivatives useful as organo-iron sources and hematinic agents. Compounds disclosed are 1,1'-diethyl-.alpha.,.alpha.'-thiabiscyclopentadienyl-iron-S-oxide and 1,1'-diethyl-.alpha.,.alpha.'-thiabiscyclopentadienyl-iron-S-dioxide.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: April 20, 1976
    Assignee: Richardson-Merrell Inc.
    Inventor: John T. Suh
  • Patent number: 3932461
    Abstract: The compound N-[4-(3,4-methylenedioxyphenyl)-but-2-yl]-.beta.-(3,4-dihydroxyphenyl)ethy lamine, and salts thereof, are cardiotonic agents, central nervous system depressants and analgetic agents.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: January 13, 1976
    Assignee: Richardson-Merrell Inc.
    Inventor: John T. Suh