Patent · US Expired

Activated carbon coated ceramic fibers

US5773143A · kind A · utility

21Cited by
15References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 30, 1996
Grant dateJun 30, 1998
Priority date—
Expiry dateApr 30, 2016

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T428/2938
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

Ceramic fibers having a coating of activated carbon thereon are disclosed. A process involving coating the ceramic fibers with a carbon source, carbonizing the fibers, and then activating the carbon makes the fibers. The preferred carbon source is asphalt in the form of an aqueous emulsion or a solution. The activated, carbon coated ceramic fibers have excellent filtering properties especially at high temperatures. They perform as well as carbon fibers and have the advantage of lower cost and fewer production difficulties. Conventional carbon fibers are expensive and difficult to produce.

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