Patents Assigned to Pennwalt Corporation
  • Patent number: 4777230
    Abstract: A process is provided for the free radical polymerization of monomers derived from substituted or unsubstituted acrylic acid/methacrylic acid and esters thereof for the production of a polymer having a narrow molecular weight distribution and an average molecular weight of less than 4000. These polymers are produced by the solution polymerizing of said monomers wherein 20-40% by weight of the monomer composition is hydroxyalkyl acrylate or methacrylate in the presence of a solvent system suitable for high solids coating applications and in the presence of an initiating amount of a tertiary alkyl hydroperoxide and/or its derivatives having at least 5 carbons wherein the initiator and monomers, alone or in combination, are added continuously at a programmed rate wherein the rate of addition corresponds approximately to the rate of decomposition of said monomer and initiator. These polymers are used for high solids coating applications.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: October 11, 1988
    Assignee: Pennwalt Corporation
    Inventor: Vasanth R. Kamath
  • Patent number: 4774334
    Abstract: Compounds possessing antiallergy activity have the formula: ##STR1## wherein R and R.sup.1 are independently hydrogen or alkyl, or R and R.sup.1 together with the attached nitrogen form a heterocyclic ring system selected from the group consisting of piperidinyl, pyrrolidinyl, morpholinyl and 1, 2, 3, 4-tetrohydroquinolinyl, and R.sup.2 is phenyl or phenyl monosubstituted with a lower alkyl, a nitro, a halogenated methyl, a halogen or a lower alkoxy group.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: September 27, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, Thomas R. DeCory
  • Patent number: 4772705
    Abstract: The trans isomeric form of 1,3,4,6,7,11b-hexahydro-7-aryl-2H-pyrazino[2,1-a]isoquinolines are prepared using novel 3-phenyl-4-arylacyl-2-piperazinones and 3-phenyl-4-(2-hydroxy-2-arylethyl) piperazines as intermediates. The process involves reacting a nove piperazinone with a reducing agent such as aluminum hydrides, borane or lithium borohydrides, and then reacting the resulting piperazine with a strong acid, such as polyphosphoric or sulfuric acid.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: September 20, 1988
    Assignee: Pennwalt Corporation
    Inventor: Richard J. Schmiesing
  • Patent number: 4770527
    Abstract: A photoelectric-piezoelectric velocity and impact sensor has a plurality of photoelectric light sources and associated photodetectors disposed on axes defining an array of light beams. A first electronic circuit is operatively coupled to the photodetectors for generating a signal representative of the moment in time when at least one light beam of the array is broken by a projectile passing through the array. A substantially planar transducer is disposed coplanar with and spaced apart from the array for generating a signal when the projectile strikes the transducer after passing through the array. A second electronic circuit responsive to the signal from the transducer is provided for generating a signal representative of the moment in time when the projectile strikes the transducer. A calculating circuit responsive to the signal from the first circuit and the signal from the second circuit is provided for calculating the velocity of the projectile as a function of the time difference between the signals.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: September 13, 1988
    Assignee: Pennwalt Corporation
    Inventor: Kyung T. Park
  • Patent number: 4769471
    Abstract: Substituted 3,5-diphenyl-3-[(1H-1,2,4-triazol-1-yl) methyl]-2-methylisoxazolidines in which hydrogens of their phenyl rings may be replaced by halogen, lower alkoxy, lower alkyl or nitro groups are useful as antifungal agents.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: September 6, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, George B. Mullen
  • Patent number: 4769469
    Abstract: 5-(phenyl or phenoxymethyl)-3-(2-furanyl)-3-(1H-imidazol-1-ylmethyl)-2-methylisoxazolid ine and related derivatives in which one or more hydrogens on the phenyl ring are replaced by halogen, lower alkyl, lower alkoxy, nitro and combinations thereof are useful as antifungal agents.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: September 6, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, George B. Mullen
  • Patent number: 4769369
    Abstract: Novel 1 2(H)-phthalazones are disclosed along with a method of treating either allergic rihinitis or bronchial asthma by the administration to a mammal an effective amount of a compound of the formula: ##STR1## wherein R.sub.1 is hydrogen, hydroxyl, C.sub.1 -C.sub.4 alkoxy, or C.sub.1 -C.sub.4 alkylthio,R.sub.2 is ##STR2## or 1-pyrrolidinyl, R.sub.3 and R.sub.4 are independently hydrogen or C.sub.1 -C.sub.4 alkyl,X is CH.sub.2, O or NR.sub.5,Y is ethylene or ethenylene,R.sub.5 is hydrogen or C.sub.1 -C.sub.4 alkyl,n is 2, 3 or 4,and all stereoisomeric forms and pharmaceutical acceptable addition salts thereof.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: September 6, 1988
    Assignee: Pennwalt Corporation
    Inventors: Telfer L. Thomas, Lesley A. Radov
  • Patent number: 4769470
    Abstract: 5-(Phenyl or phenoxymethyl)-3-(2-thienyl)-3-(1H-imidazol-1-ylmethyl)-2-methylisoxazolid ines and related derivatives in which one or more hydrogens on the 5-phenyl or phenoxy rings are replaced by halogen, lower alkyl, lower alkoxy, nitro and combinations thereof are useful as antifungal agents.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: September 6, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, George B. Mullen
  • Patent number: 4769466
    Abstract: Compounds are provided of the following general structure: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from hydrogen or methyl; A is amino, C.sub.1 -C.sub.4 monoalkylamino, C.sub.2 -C.sub.8 dialkylamino, 1-pyrrolidinyl, 1-piperidinyl, 4-morpholinyl or cyclopropylamino; and where W and Q are independently selected from 2-pyridinyl, 3-pyridinyl or 4-pyridinly or phenyl, provided W and Q are not both phenyl.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: September 6, 1988
    Assignee: Pennwalt Corporation
    Inventors: Ronald C. Griffith, James J. Napier
  • Patent number: 4769445
    Abstract: Peptides and Peptide amides such as cholecystokinin (CCK-8) are synthesized in improved yields and purity by a solid phase process. The requisite protected peptide is elaborated and sulfated on a solid support, deprotected, and cleaved from the solid support to give the total synthesis of CCK-8 on a solid support. Thereafter, the peptide is purified in a single step by ion exchange chromatography to provide analytically pure CCK-8.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: September 6, 1988
    Assignee: Pennwalt Corporation
    Inventors: Jeanne Comstock, James D. Rosamond
  • Patent number: 4767867
    Abstract: 5-(Hydroxy or alkoxyalkyl)-3-phenyl-3-(1H-imidazol-1-ylmethyl)-2-methylisoxazolidines and related derivatives in which hydrogens of the phenyl ring are replaced by halogen, lower alkyl or lower alkoxy groups are useful as antifungal agents.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: August 30, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, George B. Mullen
  • Patent number: 4767868
    Abstract: 3-Phenyl-3-(1H-imidazol-1-ylmethyl)-2-methyl-5-[(phenylamino)methyl]isoxazo lidine and related derivatives in which hydrogens of their phenyl rings may be replaced by one or more halogen, lower alkoxy, lower alkyl and nitro groups are useful as antifungal agents.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: August 30, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, George B. Mullen
  • Patent number: 4767866
    Abstract: 3-Phenyl-3-(1H-1,2,4-triazol-1-methyl)-2-methyl-5-alkylisoxazolidines and related derivatives in which hydrogens in the phenyl ring are replaced by halogen, lower alkyl or lower alkoxy groups are useful as antifungal agents.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: August 30, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, George B. Mullen
  • Patent number: 4766131
    Abstract: Analgesic 1,2,3,4-tetrahydroisoquinolines of the formula (1) ##STR1## wherein R.sub.1 and R.sub.2 respectively are hydrogen, hydroxy or alkoxy of 1 to 4 carbon atoms, R.sub.3 and R.sub.4 respectively are hydrogen or alkyl of 1 to 4 carbon atoms, and R.sub.5 is hydroxy, nitro or ##STR2## wherein R.sub.6 and R.sub.7 respectively are hydrogen, alkyl of 1 to 4 carbon atoms or RCO-- wherein R is hydrogen or alkyl of 1 to 4 carbon atoms; pharmaceutically acceptable addition salts thereof with non-toxic acids; analgesic compositions thereof in an inert, pharmaceutical carrier; and methods of preparation from corresponding R.sub.1, R.sub.2, R.sub.3 and R.sub.4 -substituted tetrahydroisoquinolines.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: August 23, 1988
    Assignee: Pennwalt Corporation
    Inventors: Thomas A. Davidson, Ronald C. Griffith
  • Patent number: 4764163
    Abstract: Decanter pond level or radius is adjusted incrementally by means of an annular retainer plate having an eccentric recess formed in the surface thereof which faces hub openings. The recess receives a plate dam slidably therewithin. Each retainer plate or retainer, typically 6 in number, is mounted over a hub opening. The dam is mounted over the hub opening such that its weir surface substantially coincides with the rotating pond level. By rotating the retainer around the prepositioned dam in increments preset in the retainer, the dam moves radially inwardly or outwardly depending upon the position of the recess eccentricity with respect to the hub opening. The dam is provided with two different weir surfaces, each usable with a different side of the dam, thus permitting the number of adjustments to the pond level to be doubled. A modification discloses infinite or stepless pond level adjustments.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: August 16, 1988
    Assignee: Pennwalt Corporation
    Inventor: John W. Caldwell
  • Patent number: 4764550
    Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polyphenylene ether resins.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: August 16, 1988
    Assignee: Pennwalt Corporation
    Inventors: Ronald F. Lovenguth, Joseph M. Bohen
  • Patent number: 4762709
    Abstract: A formulation of a drug wherein the drug is present as a coated, drug-resin complex suspended in a liquid carrier which carrier also contains a second ionic component bearing the same charge as the coated complexed drug, the second ionic component being present as an uncoated, insoluble drug-resin complex.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: August 9, 1988
    Assignee: Pennwalt Corporation
    Inventor: Jerry L. Sheumaker
  • Patent number: 4762219
    Abstract: Empty boxes for packing articles thereinto, typically fruit, are packed by handpackers, for example, stationed along a plurality of fruit packing lines, each line provided with an empty box accumulation station. As soon as a box is packed and conveyed to a palletizer, an empty box is conveyed to the accumulation station on conveyor belt means from a box buffer station in closest proximity thereto and immediately upstream thereof to stack up against the last, or most upstream of the accumulated boxes, causing each box in each upstream buffer station to be conveyed downstream to thereby maintain each buffer station satisfied, the last box of the most upstream buffer station being supplied from a main box holding station. Box movement is controlled by photocell switches inputting signals to a microprocessor indicating the absence or presence of a box at a predetermined location.
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: August 9, 1988
    Assignee: Pennwalt Corporation
    Inventors: Richard D. Walters, Jon De Young, Clarence M. Rasmussen, Louie S. Almares
  • Patent number: 4762828
    Abstract: 1,2,4-Triazolo[4,3-d]-4-azatricyclo[4.3.1.1.sup.3,8 ]-undecane and 3-derivatives and intermediates thereof are described. The compounds are useful and antiinflammatory and antihypoxia agents.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: August 9, 1988
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, Grace A. Bennett
  • Patent number: 4762861
    Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polystyrene resins.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: August 9, 1988
    Assignee: Pennwalt Corporation
    Inventors: Joseph M. Bohen, Ronald F. Lovenguth