Patents Assigned to Production Previews
  • Frangible capsules containing composition
    Patent number: 4844885
    Abstract: A pressure-sensitive microcapsule-containing composition composed of a liquid phase capable of solidification which has substantially evenly dispersed therethroughout a multiplicity of microencapsulated droplets of a solvent phase. The shells of the microcapsule are rupturable under applied pressure for selectively releasing the solvent phase for dissolving the liquid phase after it has solidified.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: July 4, 1989
    Assignee: Production Previews
    Inventor: Milton P. Chernack