Patents Assigned to Hi-Float Co., Inc.
  • Balloons having improved resistance to oxidation
    Patent number: 5492500
    Abstract: The oxidation resistance of elastomeric balloons made from natural rubber is greatly improved by coating the exterior of the balloon with a film of uncured elastomer, preferably neoprene. The uncured elastomer coating maintains the clarity of the inflated balloons. These balloons are particularly useful as containers for gifts or in balloon sculpture.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: February 20, 1996
    Assignee: Hi-Float Co., Inc.
    Inventors: Harold K. Sinclair, Donald K. Burchett
  • Gas barrier coating and coated elastomeric toy balloons
    Patent number: 5244429
    Abstract: Polyvinyl alcohol coatings used to improve the bouyant life of elastomeric balloons include polyvinyl alcohol and a water soluble carbohydrate extender such as dextrose, at levels up to four times the weight of the polyvinyl alcohol. The improved coatings of the present invention typically give double the floating life of the balloon under a wide range of humidities.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: September 14, 1993
    Assignee: Hi-Float Co., Inc.
    Inventor: Harold K. Sinclair