Patent · US Expired

Low density polymer beads

US6930133B2 · kind B2 · utility

0Cited by
16References
20Claims
0Family size

Inventors

Key dates

Filing dateMay 30, 2003
Grant dateAug 16, 2005
Priority date
Expiry dateAug 27, 2023

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08J2325/08
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

Low density polymeric beads made by polymerizing monomeric building blocks into large crosslinked polymer molecules in porous, spherical bead form by droplet or suspension polymerization in the presence of a porogen.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.