Patent · US Active

Functionalized nonwoven article

US9259689B2 · kind B2 · utility

2Cited by

138References

18Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Clinton P. Waller, Jr. · White Bear Lake, US
Douglas E. Weiss · Overland Park, US
Catherine A. Bothof · Stillwater, US
Kannan Seshadri · Woodbury, US

Key dates

Filing date	Nov 13, 2012
Grant date	Feb 16, 2016
Priority date	—
Expiry date	Aug 30, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2008
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A grafted nonwoven substrate is disclosed having average fiber sizes of 0.7 to 15 microns, and a void volume of 50 to 95%, and a polymer comprising anionic monomer units grafted to the surface of the nonwoven substrate. The article may be used as a filter element to purify or separate target materials, such as monoclonal antibodies (MAb), from a fluid mixture.

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