Patents Assigned to Environmental Protection Systems, Limited
  • Composition able to absorb mercury vapor and to disinfect a surface
    Patent number: 5093024
    Abstract: A composition able to absorb mercury vapor and to disinfect a surface. The composition hasa source of halogen; anda non-aqueous solvent of low vapor pressure for the source of halogen. The composition is of low vapor pressure.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: March 3, 1992
    Assignee: EPS Environmental Protection Systems Limited
    Inventor: Richard H. Roydhouse
  • Composition to absorb mercury
    Patent number: 4876025
    Abstract: A composition to absorb mercury vapour and to suppress mercury vapour. The composition comprises an iodide and a polyhydric alcohol. It may include a Lewis acid. A method of absorbing mercury comprising applying to the source of the mercury the above composition is described.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: October 24, 1989
    Assignee: EPS Environmental Protection Systems Limited
    Inventor: Richard H. Roydhouse
  • Mercury vapor suppressant
    Patent number: 4534944
    Abstract: A composition to absorb mercury vapor and suppress the formation of the vapor. The composition comprises a carrier liquid, for example water, an alcohol or glycol, copper ions, for example copper sulphate and thiosulphate ions, for example sodium thiosulphate. The absorbent is efficient and clean in use.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: August 13, 1985
    Assignee: Environmental Protection Systems, Limited
    Inventor: Richard H. Roydhouse