Patents Assigned to Princeton Organics Incorporated
  • Lightweight ceramic composition
    Patent number: 4318996
    Abstract: This invention provides a lightweight ceramic composition which is characterized by an average bulk density between about 10-105 PCF, and a compressive strength between about 300-10,000 psi.In a preferred embodiment, this invention provides an extruded structural cellular clay product having pores which are substantially non-interconnected and elongated in a single directional configuration, and having a density gradient in at least one cross-sectional plane, in which gradient the higher density is in proximity to the outer surfaces.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: March 9, 1982
    Assignee: Princeton Organics Incorporated
    Inventor: Jules Magder