Donaldson Comapny, Inc.

Anil Suthar

Daniel L Tuma

Davis B Moravec

Jacob L Sanders

Aflal Rahmathullah

Rakesh Kumar Yadav

Matthew P Goertz

Stuti S Rajgarhia

Richard Brandimarte

Mikayla A Yoder

Robert R Levac

Brian R Tucker

Robert J Pannepacker, Jr

Alexandra M Boyat

David D Lauer

Byron G Griffin

Jonathan M Beckett

Robert P Mccollam

Filtration media packs, filter elements, and media are disclosed, including media packs having a plurality of layers of single facer media wherein the layers of single facer media include a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet, with the fluted sheet and facing sheet formed of multi-layer media can include a polytetrafluoroethylene (PTFE) layer supported by a polymeric scrim layer.

High efficiency filter media

A porous polytetrafluoroethylene (PTFE) membrane including a nonwoven web having a microstructure of substantially only microfibrils fused at crossover points, said membrane having a percent balance of orthogonal dimensions that is within 10%.

Porous PTFE membrane

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Eden Prairie, MN, United States of America

Anil Suthar