Patents Assigned to Rapac
  • DRAINAGE BEADS
    Publication number: 20140133913
    Abstract: Polystyrene drainage heads having optimized shapes to provide increased specific gravity and void volume at a given bulk density. Expanded forms of such drainage beads may be used as a geosynthetic aggregate in pre-assembled drainage units. Such pre-assembled drainage units may be used as foundation drains, septic drainage fields, or for other applications.
    Type: Application
    Filed: January 16, 2014
    Publication date: May 15, 2014
    Applicant: RAPAC
    Inventors: Dennis Wayne Koerner, Carl David Ring, Jonathan Browning Jackson
  • Drainage beads
    Patent number: 8672584
    Abstract: Polystyrene drainage beads having optimized shapes to provide increased specific gravity and void volume at a given bulk density. Expanded forms of such drainage beads may be used as a geosynthetic aggregate in pre-assembled drainage units. Such pre-assembled drainage units may be used as foundation drains, septic drainage fields, or for other applications.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: March 18, 2014
    Assignee: RAPAC
    Inventors: Dennis Wayne Koerner, Carl David Ring, Jonathan Browning Jackson
  • Composite Polystyrene Particles and Methods of Making Same
    Publication number: 20120053255
    Abstract: Composite polystyrene particles have an average size less than 1200 ?m and methods of making them are provided. The composite polystyrene particles can include recycled polystyrene obtained from a variety of sources. The composite polystyrene particles can be used in a variety of applications, including packaging materials and molded supports for the shipment of fragile objects.
    Type: Application
    Filed: March 2, 2011
    Publication date: March 1, 2012
    Applicant: RAPAC
    Inventors: Dennis W. Koerner, Michael Pate, David Wilson
  • Loose fill packing insert
    Patent number: D319392
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: August 27, 1991
    Assignee: Rapac
    Inventor: Robert G. Ring