Patents Assigned to W. R. Grace Ltd.
  • Waterproof membrane
    Patent number: 4751122
    Abstract: A preformed structure comprising a sheet-like substrate with a release coating on one side and a waterproofing pressure sensitive adhesive permanently attached to the other side.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: June 14, 1988
    Assignee: W. R. Grace Ltd.
    Inventor: Basil J. May
  • Mandrel for applying wrapping material
    Patent number: 4741490
    Abstract: A mandrel for use in winding a web around an article, the mandrel including a support for a roll of the web, a handle rotatably attached at each end of the support and a brake which retards rotation of the support relative to at least one handle by an amount depending on the relative rotation between the handle and support which has already taken place.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: May 3, 1988
    Assignee: W. R. Grace Ltd.
    Inventor: John R. Evans
  • Secondary photocuring of photocured printing plate, apparatus and method
    Patent number: 4148934
    Abstract: This invention is directed to an apparatus and method for secondary curing of a selectively photocured liquid polymer polymeric printing plate by mechanically stripping the selectively photocured printing plate to remove at least substantially all of the uncured liquid composition and placing the stripped printing plate under an inert liquid, in particular water, and exposing it to actinic light.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: April 10, 1979
    Assignee: W. R. Grace Ltd.
    Inventor: Noel J. Baker