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:
Jul. 27, 1999
Filed:
Nov. 13, 1997
Wei-Chih Chen, Meriden, CT (US);
Ronald V Repetti, Guilford, CT (US);
Jack Slovak, Incline Village, NV (US);
Cuno, Incorporated, Meriden, CT (US);
Abstract
A process for the manufacture of porous structures comprises forming a dry mixture comprising a component providing primary separation capability, a component providing green strength reinforcement capability and, a component providing binding capability and selected from the group consisting of thermoplastic and thermosetting polymers; delivering the mixture to a suitable surface and building a desired thickness thereof; densifying the mixture into tile form desired for the porous structure; removing the densified porous structure from the surface; binding the component providing the primary separation capability by melting the mixture to a temperature of up to about 20.degree. C. higher than the melting point of any thermoplastic component providing binding capability. Porous structures (100, 110, 120, 125, 140, 175) according to the present invention comprise from about 70 to about 90 parts by weight of a component providing primary separation capability (61, 62); from about one to about 15 parts by weight of a component providing green strength reinforcement capability (64, 65); and, from about eight to about 20 parts by weight of a component providing binding capability (67, 68) and selected from the group consisting of thermoplastic and thermosetting polymers.