Patents Represented by Attorney, Agent or Law Firm Steven R. Eck
  • Patent number: 5506270
    Abstract: This invention provides a method for treating hypothalamic amenorrhea in a non-depressed female mammal by administering to the mammal an effective amount of a hydroxycycloalkanephenethyl amine compound of the following structural formula: ##STR1## in which A is a moiety of the formula ##STR2## wherein the dotted line represents optional unsaturation;R.sub.1 is hydrogen or alkyl;R.sub.2 is alkyl;R.sub.4 is hydrogen, alkyl, formyl, or alkanol;R.sub.5 and R.sub.6 are, independently, hydrogen, hydroxyl, alkyl, alkoxy, alkanoyloxy, cyano, nitro, alkylmercapto, amino, alkylamino, dialkylamino, alkanamido, halo, trifluoromethyl, or taken together, methylene dioxy;R.sub.7 is hydrogen or alkyl; andn is 0, 1, 2, 3, or 4;or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: April 9, 1996
    Assignee: American Home Products Corporation
    Inventors: Gertrude V. Upton, Albert T. Derivan, Richard L. Rudolph
  • Patent number: 5498775
    Abstract: This invention relates to the use of polyanionic benzylglycosides as smooth muscle cell proliferation inhibitors and as therapeutic compositions for treating diseases and conditions which are characterized by excessive smooth muscle proliferation, such as restenosis. The compounds of this invention are those of formula I ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are, independently, H, SO.sub.3 M, or ##STR2## and each oligosaccharide group contains 1 to 3 sugar groups; M is lithium, sodium, potassium, or ammonium;n is 1 or 2;X is a halogen, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms;Y is carbonyl or sulfonyl;Z is alkyl from 1 to 12 carbon atoms, ##STR3## and X is as defined above; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: March 12, 1996
    Assignee: American Home Products Corporation
    Inventors: Sarah T. A. Novak, Richard M. Soll, John W. Ellingboe, Thomas T. Nguyen
  • Patent number: 5498244
    Abstract: A sanitary or safety guard for a medical device subject to contamination, the medical device having a recess in its external surface, the guard comprising:(a) an elongate, hollow guard body having an internal chamber, an internal surface, an external surface, a first opening, and a second opening, the first and second openings being located at opposite ends of the guard body, the first opening being sufficient to allow at least a portion of the medical device to enter into the internal chamber and the second opening being sufficient to allow a portion of the medical device to extend from the internal chamber through the second opening;(b) a passage extending through the guard body between the internal and external surfaces;(c) a biasing arm connected by hinging means to the guard body;(d) an intrusion tab secured to the biasing arm such that the biasing arm projects the intrusion tab through the passage into the internal chamber of the guard body;(e) locking means secured to the guard body such that the locki
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: March 12, 1996
    Assignee: American Home Products Corporation
    Inventor: Steven R. Eck
  • Patent number: 5484717
    Abstract: This invention relates to antibiotic 31F508.alpha..sub.1, 31F508.alpha..sub.2, 31F508.beta..sub.1 and 31F508.beta..sub.2, derived from the microorganism Streptomyces viridodiastaticus subsp. "littus" which are useful as an anti-bacterial agent.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: January 16, 1996
    Assignee: American Cyanamid Company
    Inventor: Joseph A. Zaccardi
  • Patent number: 5482940
    Abstract: There are disclosed the use of the compounds of the formula (I) ##STR1## wherein R.sup.1 is 1-adamantyl, 3-methyl-1-adamantyl, 3-noradamantyl, unsubstituted or substituted-2-indolyl, 3-indolyl, 2-benzofuranyl or 3-benzofuranyl wherein the substituents are selected from lower alkyl, lower alkoxy and halo; R.sup.2 is unsubstituted or substituted phenyl, benzyl, or pyrimidinyl wherein the substituents are selected from lower alkyl, lower alkoxy, trifluoromethyl and halo; R.sup.3 is H or lower alkyl of 1 to 3 carbon atoms; n is the integer 0 or 1; and m is the integer from 2 to 5 and the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: January 9, 1996
    Assignee: American Home Products Corporation
    Inventors: Magid A.-M. Abou-Gharbia, John P. Yardley, Wayne E. Childers, Jr., John A. Moyer
  • Patent number: 5468774
    Abstract: There are disclosed compounds of the formula: ##STR1## wherein X is O;R.sup.1 and R.sup.2 are each, independently, hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.3 -C.sub.20 cycloalkyl, phenylloweralkyl, or substituted phenylloweralkyl substituted by halo, lower alkyl, lower alkoxy, halo lower alkyl, amino, monoloweralkylamino, diloweralkylamino or sulfonamido;A is O, S, NR, or a chemical bond;R, if present, is hydrogen or loweralkyl;m is 0-15;n is 3-12;p is 0-15,where m+p=2-15;and the pharmacologically acceptable salts thereof. Also disclosed is a method for treating immunoimmflammatory conditions in mammals which comprises administering to a mammal so afflicted an effective amount of a compound having the formula above wherein X, R.sup.1, R.sup.2, A, R, if present, m and p are as listed above and n=3-12 and m+p=2-15.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: November 21, 1995
    Assignee: American Home Products Corporation
    Inventors: Guy A. Schiehser, Craig E. Caufield, Nancie A. Senko, Gregory F. VonBurg
  • Patent number: 5436333
    Abstract: Compounds of the formula: ##STR1## in which R.sup.1 is H, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, amino, bromo, chloro, fluoro, iodo, C.sub.1 -C.sub.3 alkylcarbonyl or trifluoromethyl; R.sup.2 is H, C.sub.1 -C.sub.3 alkyl, C.sub.1 --C.sub.3 alkoxy, bromo, chloro, fluoro, iodo, or C.sub.1 -C.sub.3 alkylcarbonyl; or R.sup.1 and R.sup.2 taken together are methylenedioxy or ethylenedioxy; the structure ##STR2## represents, as described in the specification, an ortho-fused phenyl moiety; an aromatic 5-membered heterocycle containing N, O, or S; or an aromatic 6-membered heterocycle containing N; all of which may be optionally substituted, are produced by reaction of ##STR3## where R.sup.3 is a masked aldehyde or carboxyl group, with 2-nitro-benzyl bromide followed by removal of the mask, reduction and cyclization.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: July 25, 1995
    Assignee: American Cyanamid Company
    Inventors: Aranapakam M. Venkatesan, Jay D. Albright
  • Patent number: 5420153
    Abstract: There are disclosed compounds of the formula: ##STR1## wherein X is NR;R is hydrogen or lower alkyl;R.sup.1 and R.sup.2 are each, independently, hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.3 -C.sub.20 cycloalkyl, phenylloweralkyl, or substituted phenylloweralkyl substituted by halo, lower alkyl, lower alkoxy, halo lower alkyl, amino, monoloweralkylamino, diloweralkylamino or sulfonamido;A is O, S, NR, or a chemical bond;m is 0-15;n is 0-20;p is 0-15,where m+p.ltoreq.15;and the pharmacologically acceptable salts thereof, which by virtue of their ability to inhibit PLA.sub.2, are of use as antiinflammatory agents and there is also disclosed a method for the treatment of immunoinflammatory conditions, such as allergy, anaphylaxis, asthma and inflammation in mammals, as well as in the modulation of PAF-mediated biological processes, such as embryonic implantation, thus making the compounds useful as antifertility agents.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: May 30, 1995
    Assignee: American Home Products Corporation
    Inventors: Guy A. Schiehser, Craig E. Caufield, Nancie A. Senko, Gregory F. VonBurg
  • Patent number: 5387680
    Abstract: This invention provides C-22 substituted rapamycin derivatives of the following formulas: ##STR1## and pharmaceutically acceptable salts thereof which are useful for inducing immunosuppression and treating transplantation rejection, host vs. graft disease, autoimmune diseases, diseases of inflammation, solid tumors, fungal infections, adult T-cell leukemia/lymphomas and hyperproliferative vascular disorders.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: February 7, 1995
    Assignee: American Home Products Corporation
    Inventor: Frances C. Nelson
  • Patent number: 5380725
    Abstract: There are disclosed compounds of the formula (I) ##STR1## wherein R.sup.1 is 1-adamantyl, 3-methyl-1-adamantyl, 3-noradamantyl, unsubstituted or substituted-2-indolyl, 3-indolyl, 2-benzofuranyl and 3-benzofuranyl wherein the substituents are selected from lower alkyl, lower alkoxy and halo; R.sup.2 is unsubstituted or substituted phenyl, benzyl, pyridinyl, pyrimidinyl or pyrazinyl, wherein the substituents are selected from lower alkyl, lower alkoxy, trifluoromethyl and halo; R.sup.3 is H or lower alkyl of 1 to 3 carbon atoms; n is the integer 0 or 1; m is the integer from 2 to 5; and the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: January 10, 1995
    Assignee: American Home Products Corporation
    Inventors: Magid A. Abou-Gharbia, John P. Yardley, Wayne E. Childers, Jr.
  • Patent number: 5366993
    Abstract: There are disclosed compounds of the formula: ##STR1## wherein X is O, S or NR;R is hydrogen or lower alkyl;R.sup.1 and R.sup.2 are each, independently, hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.3 -C.sub.20 cycloalkyl, phenylloweralkyl, or substituted phenylloweralkyl substituted by halo, lower alkyl, lower alkoxy, halo lower alkyl, amino, monoloweralkylamino, diloweralkylamino or sulfonamido;A is O, S, NR, or a chemical bond;m is 0-15;n is 0-20;p is 0-15,where m+p.ltoreq.15;and the pharmacologically acceptable salts thereof, which by virtue of their ability to inhibit PLA.sub.2, are of use as antiinflammatory agents and there is also disclosed a method for the treatment of immunoinflammatory conditions, such as allergy, anaphylaxis, asthma and inflammation in mammals, as well as in the modulation of PAF-mediated biological processes, such as embryonic implantation, thus making the compounds useful as antifertility agents.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: November 22, 1994
    Assignee: American Home Products Corporation
    Inventors: Guy A. Schiehser, Craig E. Caufield, Nancie A. Senko, Gregory F. VonBurg
  • Patent number: 5211931
    Abstract: The present invention provides a method of removing impurities from a stream of silane, SiH.sub.4. Most notably, the present invention provides a method of removing ethylene from a silane stream by converting the ethylene to ethylsilane in the presence of a molecular sieve and distilling the desired silane from the ethylsilane contaminant.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: May 18, 1993
    Assignee: Ethyl Corporation
    Inventors: Robert H. Allen, Douglas M. Richards
  • Patent number: 5206004
    Abstract: Improved molecular sieves and processes for treatment of molecular sieves which permit use for separation of ethylene and silane without attending formation of ethylsilane. Such treatment includes treatment of sieves with silane at an effective temperature, pressure and time.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: April 27, 1993
    Assignee: Ethyl Corporation
    Inventor: Won S. Park
  • Patent number: 5202099
    Abstract: An apparatus and process for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: April 13, 1993
    Assignee: Ethyl Corporation
    Inventors: James E. Boone, David W. Owens, Robert E. Farritor, Wesley D. Blank
  • Patent number: 5097052
    Abstract: Novel methods for the preparation of sodium aluminum tetraalkyls have been discovered comprising the reaction of sodium aluminum tri-isobutyl hydride and olefins. The methods avoid the use of sodium aluminum hydrides and permit in one step both the substitution of isobutyl groups and additions at hydride hydrogens to produce sodium aluminum tetraalkyls.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: March 17, 1992
    Assignee: Ethyl Corporation
    Inventor: Gunner E. Nelson
  • Patent number: 5089646
    Abstract: Improved methods for producing polysilane compounds using diphosphorous nickel chloride catalysts. Novel bicyclic polysilane compounds, among other compounds, can be produced using these improved methods.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: February 18, 1992
    Assignee: Ethyl Corporation
    Inventor: Bruce C. Berris
  • Patent number: 5089648
    Abstract: Improved methods for producing polysilane compounds using tetrakis(triethylphosphine)nickel (O) catalysts.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: February 18, 1992
    Assignee: Ethyl Corporation
    Inventor: Bruce C. Berris