Patents Assigned to Dart Industries Inc.
  • Fast crystallizing polyethylene terephthalate compositions
    Patent number: 4448913
    Abstract: Polyethylene terephthalate molding compositions characterized by rapid crystallization are provided by combining polyethylene terephthalate and a filler or reinforcing agent with a crystallization-rate promoter comprising sodium benzoate and a poly-alpha-olefin such as low density polyethylene. A flame retardant material is provided by the addition of flame retardant additives.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: May 15, 1984
    Assignee: Dart Industries Inc.
    Inventors: Ernest A. Coleman, Kevin J. Cronin, Frank K. Chu, Robin W. Kirwan
  • Synergistic vinyl halide stabilizer compositions of antimony organic sulfur-containing compounds, alkaline earth carboxylates and alkali metal carbonates
    Patent number: 4440674
    Abstract: A vinyl halide resin stabilizer composition which essentially contains:(a) an antimony organic sulfur-containing compound, for example, antimony mercaptoacid esters, antimony alkyl mercaptides, and the like,(b) an alkaline earth metal salt of a carboxylic acid, such as calcium stearate, and(c) an alkali metal carbonate, such as sodium carbonate.These compositions synergistically contribute to the dynamic processing stability of vinyl halide resin compositions. Rigid polyvinyl chloride compositions are stabilized against dynamic processing conditions of heat and shearing forces.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: April 3, 1984
    Assignee: Dart Industries Inc.
    Inventors: Dale J. Dieckmann, Charles W. Fletcher
  • Egg scoop or spoon
    Patent number: 4438564
    Abstract: An improved egg scoop or spoon suitable for handling hot boiled eggs wherein the spoon bowl is itself egg shaped and is constructed so as to be easily positionable around an egg, to surround and firmly retain an egg and to provide for the drainage of fluids from the egg without its retention within the spoon bowl and the ready floatation of an egg from the spoon bowl when presented to a body of fluid.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: March 27, 1984
    Assignee: Dart Industries Inc.
    Inventor: Harold P. Ashton
  • Dissolution of metals utilizing a lactone
    Patent number: 4437927
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and a catalytic amount of a lactone such as .gamma.-butyrolactone, .epsilon.-caprolactone or .gamma.valerolactone.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: March 20, 1984
    Assignee: Dart Industries Inc.
    Inventor: Kwee C. Wong
  • Dissolution of metals utilizing a furan derivative
    Patent number: 4437932
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and a catalytic amount of a furan derivative such as tetrahydrofurfuryl alcohol or tetrahydrofuran.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: March 20, 1984
    Assignee: Dart Industries Inc.
    Inventor: Kwee C. Wong
  • Dissolution of metals utilizing a glycol ether
    Patent number: 4437928
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and a catalytic amount of a glycol ether such as diethylene glycol butyl ether or ethylene glycol butyl ether.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: March 20, 1984
    Assignee: Dart Industries Inc.
    Inventor: Kwee C. Wong
  • Dissolution of metals
    Patent number: 4437931
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and certain primary diols.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: March 20, 1984
    Assignee: Dart Industries Inc.
    Inventors: Moenes L. Elias, Walter L. Burger
  • Dissolution of metals utilizing .epsilon.-caprolactam
    Patent number: 4437930
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and a catalytic amount of .epsilon.-caprolactam.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: March 20, 1984
    Assignee: Dart Industries Inc.
    Inventor: Kwee C. Wong
  • Dissolution of metals utilizing pyrrolidone
    Patent number: 4437929
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and a catalytic amount of pyrrolidone such as 2-pyrrolidone or N-methyl-2-pyrrolidone.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: March 20, 1984
    Assignee: Dart Industries Inc.
    Inventor: Kwee C. Wong
  • Sifter or the like
    Patent number: D272972
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: March 13, 1984
    Assignee: Dart Industries Inc.
    Inventor: Pieter K. J. De Coster
  • Combined sifter and container or the like
    Patent number: D272973
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: March 13, 1984
    Assignee: Dart Industries Inc.
    Inventor: Pieter K. J. De Coster
  • Buffet server
    Patent number: D272978
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: March 13, 1984
    Assignee: Dart Industries Inc.
    Inventors: Dan E. Gremponrez, David L. Painter
  • Rack for utensils or the like
    Patent number: D273262
    Type: Grant
    Filed: January 12, 1982
    Date of Patent: April 3, 1984
    Assignee: Dart Industries Inc.
    Inventor: Martin J. Wolff
  • Container cover or the like
    Patent number: D273837
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: May 15, 1984
    Assignee: Dart Industries Inc.
    Inventor: Pieter K. J. De Coster
  • Telephone
    Patent number: D273863
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: May 15, 1984
    Assignee: Dart Industries Inc.
    Inventors: John W. Goodin, Charlie A. Patterson
  • Cover for a food storage container or the like
    Patent number: D274030
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: May 29, 1984
    Assignee: Dart Industries Inc.
    Inventors: Robert H. C. M. Daenen, Rino Conti
  • Electronic timing and controlling device
    Patent number: D274314
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: June 19, 1984
    Assignee: Dart Industries Inc.
    Inventors: John W. Goodin, Edward E. Albright, Amy K. Tamura
  • Picture frame support or the like
    Patent number: D274591
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: July 10, 1984
    Assignee: Dart Industries Inc.
    Inventor: Robert H. C. M. Daenen
  • Knob
    Patent number: D274690
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: July 17, 1984
    Assignee: Dart Industries Inc.
    Inventor: William C. Cesaroni
  • Scoop or the like
    Patent number: D274777
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: July 24, 1984
    Assignee: Dart Industries Inc.
    Inventor: Martin J. Wolff