Patents Assigned to AquaSource, Inc.
  • Slow release insect repellents
    Patent number: 6180127
    Abstract: This invention discloses slow release formulations for use in application of volatile insect repellents. A copolymer of polyvinyl pyrrolidone and an alkyl group of 4-30 carbons provides the slow release properties. The formulations are characterized by high residual action, low skin penetration, and high resistance to removal by water.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: January 30, 2001
    Assignee: AquaSource, Inc.
    Inventors: Gary J. Calton, Sidney R. Siemer, Louis L. Wood