The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2005
Filed:
Dec. 03, 2002
Matthew P. Henrichsen, Evansville, WI (US);
William C. Haberkamp, Cookeville, TN (US);
Gene A. Mullins, Jr., Cookeville, TN (US);
Matthew P. Henrichsen, Evansville, WI (US);
William C. Haberkamp, Cookeville, TN (US);
Gene A. Mullins, Jr., Cookeville, TN (US);
Fleetguard, Inc., Nashville, TN (US);
Abstract
A method for making high temperature filter media is provided by melt-spinning a plurality of fibers of preceramic thermoplastic polymer to form a nonwoven textile web of the fibers, curing and cross-linking the thermoplastic polymer to a thermoset polymer, and thermally decomposing the thermoset polymer to ceramic. Between the melt-spinning step and the curing step, the web is formed to a filter pre-form in a green state while still pliable and malleable. The filter pre-form is cured without re-melting the thermoplastic polymer and without destroying morphology.