Patents Represented by Attorney Frank M. Van Riet

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  • Encapsulated fluorescent composition
    Patent number: 4324682
    Abstract: This invention relates to compositions of matter useful for marking and identification purposes comprising a continuous, pressure rupturable coating containing (1) a fluorescent material and (2) a water-insoluble, volatile, hydrocarbon solvent and a method of marking and identifying objects therewith.
    Type: Grant
    Filed: June 18, 1973
    Date of Patent: April 13, 1982
    Assignee: American Cyanamid Company
    Inventors: Norma A. Weston, Edward J. Schurdak
  • Process for the preparation of 2,5-dimethyl-1,4: 3,6-dianhydrosorbitol
    Patent number: 4322359
    Abstract: A water-miscible, non-hydroxylic, organic solvent is employed in the production of 2,5-dimethyl-1,4: 3,6-dianhydrosorbitol by methylation of 1,4: 3,6-dianhydrosorbitol with dimethyl sulfate.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: March 30, 1982
    Assignee: American Cyanamid Company
    Inventors: Ray L. Hillard, Irwin D. Greene
  • Water-resistant black flexographic ink
    Patent number: 4321178
    Abstract: The ammonium salt of Nigrosine Sulfonic Acid, a novel compound, has been discovered to produce a black flexographic ink with superior water-resistance properties.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: March 23, 1982
    Assignee: American Cyanamid Company
    Inventor: Eugene L. Miller
  • Spinnerette plate having multiple capillaries per counterbore for melt spinning fusion melts of acrylonitrile polymer and water
    Patent number: 4318680
    Abstract: A spinnerette plate having multiple capillaries per counterbore can be effectively used to melt-spin fusion melts of acrylonitrile polymer and water without sticking together of individual filaments.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: March 9, 1982
    Assignee: American Cyanamid Company
    Inventors: Ronald E. Pfeiffer, Stanley E. Peacher
  • Spinning process
    Patent number: 4317790
    Abstract: A spinnerette assembly wherein tapered passageways and distribution chambers of diminishing length are so arranged as to provide equal back pressure over all orifices thereby providing extrudates of improved uniformity of diameter after stretching.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: March 2, 1982
    Assignee: American Cyanamid Company
    Inventors: Edwin J. Siegman, Roy L. Yelverton
  • Method for the production of a powdered phenolic resole resin
    Patent number: 4317901
    Abstract: A method for the production of a powdery, free-flowing phenol/formaldehyde resin is disclosed wherein a polyvalent cationic precipitant is added to the resin emulsion produced, the precipitate is filtered, washed with water and dried.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: March 2, 1982
    Assignee: Formica Corporation
    Inventor: Harry F. Cosway
  • Apparatus for preparing open structure fibers
    Patent number: 4316714
    Abstract: Use of special pin insert in the counterbore-orifice combination of a conventional spinnerette plate provides open structure fibers.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: February 23, 1982
    Assignee: American Cyanamid Company
    Inventors: Ronald E. Pfeiffer, Francesco DeMaria
  • Process for melt spinning acrylonitrile polymer fiber using hot water as stretching aid
    Patent number: 4303607
    Abstract: Orientation stretching of acrylonitrile polymer fiber spun from a polymer-water melt directly into a steam-pressurized solidification zone is more readily accomplished when hot, liquid water is used to wet the fiber being processed at or before the stretch rolls.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: December 1, 1981
    Assignee: American Cyanamid Company
    Inventors: Francesco DeMaria, Chi C. Young
  • Process for biaxially oriented acrylonitrile polymer barrier film
    Patent number: 4301112
    Abstract: Extrusion of a homogeneous single phase fusion melt of acrylonitrile polymer and water through a circular die into a steam-pressurized solidification zone enables the tubular film formed to be drawn longitudinally and expanded transversely to provide a biaxially oriented barrier film especially suitable for food wrapping.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventor: Maurice M. Zwick
  • Method of adhesion of rubber to reinforcing materials
    Patent number: 4300973
    Abstract: A method for adhering rubber to reinforcing materials which comprises embedding a textile fiber or metal reinforcing material in a vulcanizable rubber composition comprising rubber, a vulcanizing agent and an imidazolidinone and vulcanizing said composition.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventor: Rao S. Bezwada
  • Spinning process for nylon 4 fiber
    Patent number: 4301106
    Abstract: A single phase fusion melt of nylon 4 and water when extruded through a spinneret to form a filament which is stretched provided a fiber of good physical properties without deterioration of the fiber-forming polymer.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventors: Denis Coleman, Edwin J. Siegman
  • Process for spinning poly(polymethylene terephthalamide) fiber
    Patent number: 4301105
    Abstract: Extruding a homogeneous single phase fusion melt of a poly(polymethylene phthalamide) and water through a spinneret to form filaments and stretching the resulting filaments provides fiber of desirable physical properties without significant lowering of the molecular weight of the polymer forming the fiber.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventors: Denis Coleman, Edwin J. Siegman
  • Process for self-crimping acrylic fiber from a melt of two non-compatible polymers
    Patent number: 4301104
    Abstract: A self-crimping, melt-spun acrylonitrile polymer fiber comprising as the continuous fiber matrix a first polymer comprising from about 80 to about 99 weight percent acrylonitrile and from about 1 to about 20 weight percent of one or more monomers copolymerizable with acrylonitrile and heterogeneously dispersed within said fiber matrix a second polymer incompatible with said first polymer.
    Type: Grant
    Filed: March 12, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventors: William E. Streetman, Shashikumar H. Daftary
  • Adhesion of textile cords to rubber by dip coating using an N-methylol group containing polymer
    Patent number: 4300964
    Abstract: A tire cord dipping composition and a method of adhering textile materials to rubber, are disclosed, wherein an N-methylol group containing polymer is employed.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventor: Ajit K. Chaudhuri
  • Melt-spinning a plurality of acrylonitrile polymer fibers
    Patent number: 4301107
    Abstract: A process for preparing an acrylonitrile polymer fiber is disclosed wherein melt-spun acrylonitrile polymer filaments are maintained in a stretchable state as spun, stretched in at least two stages while maintained in such stretchable stage, the first stage being at a stretch ratio of up to about 5 and the subsequent stretch being at a stretch ratio greater than that of said first to provide a total stretch ratio of at least about 25.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventors: Robert P. Kreahling, Ronald E. Pfeiffer
  • Process for melt-spinning transparent acrylonitrile polymer fiber from a hydrophobic polymer
    Patent number: 4301108
    Abstract: Incorporation of an N-vinylamide and polymerization initiator into a single phase fusion melt of a hydrophobic acrylonitrile polymer and water and polymerization of said monomer in situ provides a stable, transparent acrylonitrile polymer shaped article when said melt is extruded directly into a steam-pressurized solidification zone in which it is stretched, followed by drying under controlled conditions of temperature and humidity.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventor: Maurice M. Zwick
  • Curative for castable polyurethanes
    Patent number: 4301270
    Abstract: A curative system for castable polyurethanes is disclosed which consists essentially of a mixture of p-di(hydroxyethoxy)benzene and 1,2-bis(2-aminophenylthio)ethane and a method of use therefor.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventor: Eugene Y. C. Chang
  • Pressure sealing process
    Patent number: 4296059
    Abstract: A fiber tow bundle passing from a high pressure zone through the passageway of a sealing zone to a low pressure zone provides an effective pressure seal when liquid water under pressure diffuses through the surface of the passageway as the fiber tow bundle passes therethrough.
    Type: Grant
    Filed: July 20, 1979
    Date of Patent: October 20, 1981
    Assignee: American Cyanamid Company
    Inventor: Francesco DeMaria
  • Hollow acrylonitrile polymer fiber
    Patent number: 4296175
    Abstract: A monolobal acrylonitrile polymer fiber is disclosed in which a continuous hollow extends throughout the fiber length, which hollow is surrounded completely by a solid polymer composition substantially devoid of sheathcore structure, density gradient, and void structure, said fiber being less than about 50 deniers per filament and having desirable textile properties.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: October 20, 1981
    Assignee: American Cyanamid Company
    Inventors: Francesco De Maria, Ronald E. Pfeiffer
  • Decorative laminate sheet
    Patent number: D261819
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: November 10, 1981
    Assignee: Formica Corporation
    Inventors: Harry R. Ford, Koichi Hirakawa