Davis B Moravec

US Patent:

20220379268, Dec 1, 2022

Filed:

May 26, 2022

Appl. No.:

17/825761

Inventors:

- Bloomington MN, US
Christopher P. Conklin - Columbia MD, US
Davis B. Moravec - Burnsville MN, US
Andrew J. Dallas - Lakeville MN, US
Tianheng Zhao - Cambridge, GB
Richard W. Janse van Rensburg - Great Cambourne, GB
Peter Jackson - Royston, GB
Blane Scott - Cambridge, GB

International Classification:

B01D 69/12
B01D 71/52
B01D 69/02

Abstract:

A filter material has a layer of porous material and a plurality of structures disposed on a surface of the layer, where each of the structures has a re-entrant geometry. The plurality of structures may be a plurality of ordered structures. A filter material may include a layer of porous material and a plurality of re-entrant structures disposed on a surface of the layer, each of the re-entrant structures including a stem and a cap, where the caps of adjacent structures are attached to each other to form a plurality of pores, where each pore is disposed between adjacent re-entrant structures.

US Patent:

20230130119, Apr 27, 2023

Filed:

Oct 26, 2022

Appl. No.:

17/973657

Inventors:

- Bloomington MN, US
Steve M. Kruger - Lakeville MN, US
Shane Lawson - Waconia MN, US
Daniel E. Adamek - Bloomington MN, US
Davis B. Moravec - Burnsville MN, US
Anil Suthar - Eden Prairie MN, US

International Classification:

B01D 46/10
B01D 46/52
B01D 46/00
B01D 35/30
B01D 29/58
B01D 29/54

Abstract:

A filter assembly has a housing defining an inlet and an outlet. A plurality of chemical filter elements are disposed in the housing and are arranged in a series with respect to fluid flow. A spacing region is between adjacent filter elements in the series. Also disclosed is an assembly having a housing and a first and second chemical filter element. The second chemical filter element is downstream of the first chemical filter element. Each chemical filter element has a sheet of chemical filter material having a first edge and a second edge. A first flow path is defined parallel to a surface of the first sheet extending from its first edge to its second edge. A second flow path is defined parallel to a surface of the second sheet extending from its first edge to its second edge.

US Patent:

20210379517, Dec 9, 2021

Filed:

Aug 18, 2021

Appl. No.:

17/405665

Inventors:

- Minneapolis MN, US
Davis B. Moravec - Burnsville MN, US
Andrew J. Dallas - Lakeville MN, US
Scott A. Grossbauer - Bloomington MN, US
Bradly G. Hauser - Minneapolis MN, US
James N. Doyle - Bloomington MN, US
Daniel L. Tuma - St. Paul MN, US
Matthew T. Matsumoto - Pasadena CA, US
Kelly C. Robertson - Rosemount MN, US

International Classification:

B01D 39/00
B01D 37/04

Abstract:

A liquid hydrocarbon filterability system includes a liquid hydrocarbon sample source piping in fluid communication with a liquid hydrocarbon sample container. A filtration media element is in fluid communication with the liquid hydrocarbon sample source piping. Filtered liquid hydrocarbon outlet piping is in fluid communication with and downstream of the filtration media element. A flow or volume measurement element is in fluid communication with the filtered liquid hydrocarbon outlet piping and is configured to measure an amount of liquid hydrocarbon passing through the filtration media element. A constant pressure source is configured to provide liquid hydrocarbon to the filtration media element at a constant pressure.

US Patent:

20210106935, Apr 15, 2021

Filed:

Feb 14, 2019

Appl. No.:

16/970102

Inventors:

- Minneapolis MN, US
Andrew J. Dallas - Lakeville MN, US
Stephen K. Sontag - Maple Grove MN, US
Bradly G. Hauser - Minneapolis MN, US
Davis B. Moravec - Burnsville MN, US
Vijay K. Kapoor - Eagan MN, US
Matthew P. Goertz - Bloomington MN, US
Daniel L. Tuma - St. Paul MN, US
Warren E. Dammann - Eden Prairie MN, US
Michael J. Cronin - Apple Valley MN, US
Mike J. Madsen - Chaska MN, US
Stuti S. Rajgarhia - Bloomington MN, US
Charles S. Christ - Deephaven MN, US
Joseph M. Block - Carver MN, US

International Classification:

B01D 39/16
B01D 39/18

Abstract:

The current technology relates to substrate treatments, treated substrates, and filters. Treated substrates can have a treated surface that defines a pattern and/or gradient among untreated surface areas. A treated surface area can have a higher roll off angle for a 50 μL water droplet when the surface is immersed in toluene that the untreated surface areas. Substrates can be treated by, for example, exposing a substrate surface and/or fibers to ultraviolet (UV) radiation. UV radiation can be applied to surfaces via a mask, lens, waveguide, reflector, as examples. UV radiation can be applied to surfaces at varying intensities, which can create a treatment gradient.

US Patent:

20210060456, Mar 4, 2021

Filed:

Feb 14, 2019

Appl. No.:

16/970160

Inventors:

- Minneapolis MN, US
Andrew J. Dallas - Lakeville MN, US
Brian R. Tucker - Farmington MN, US
Daniel E. Adamek - Bloomington MN, US
Paul A. Way - Edina MN, US
Scott A. Betcher - Lakeville MN, US
Vijay K. Kapoor - Eagan MN, US
Colter A. Marcks - Ellsworth WI, US
William S. Rossiter - Brooklyn Park MN, US
Timothy O. Winters - Nowthen MN, US
Wijadi Jodi - Burnsville MN, US
Bradly G. Hauser - Minneapolis MN, US
Davis B. Moravec - Burnsville MN, US
Matthew P. Goertz - Bloomington MN, US
Stephen K. Sontag - Maple Grove MN, US
Stuti S. Rajgarhia - Bloomington MN, US
Charles S. Christ - Deephaven MN, US
Joseph M. Block - Carver MN, US

International Classification:

B01D 29/01
B01D 39/16
B01D 35/00
F02M 37/34

Abstract:

The current technology relates to filter media configurations where the filter media has a surface with a treatment that that increases the roll off angle of the surface for a 50 μL water droplet when the surface is immersed in toluene. Some example filter media has a fluted configuration, and some example filter media has multiple layers. Filter media having multiple layers can be single facer media, for example, where one layer is planar and another layer is fluted.

US Patent:

20210016214, Jan 21, 2021

Filed:

Feb 14, 2019

Appl. No.:

16/970109

Inventors:

- Minneapolis MN, US
Andrew J. Dallas - Lakeville MN, US
Brian R. Tucker - Farmington MN, US
Daniel E. Adamek - Bloomington MN, US
Paul A. Way - Edina MN, US
Scott A. Betcher - Lakeville MN, US
Vijay K. Kapoor - Eagan MN, US
Colter A. Marcks - Ellsworth WI, US
William S. Rossiter - Brooklyn Park MN, US
Timothy O. Winters - Nowthen MN, US
Wijadi Jodi - Burnsville MN, US
Davis B. Moravec - Burnsville MN, US
Stephen K. Sontag - Maple Grove MN, US
Bradly G. Hauser - Minneapolis MN, US
Matthew P. Goertz - Bloomington MN, US
Derek O. Jones - Andover MN, US
Yehya A. Elsayed - Dearborn MI, US
Stuti S. Rajgarhia - Bloomington MN, US
Charles S. Christ - Deephaven MN, US
Joseph M. Block - Carver MN, US

International Classification:

B01D 39/18
B01D 39/16
B01D 35/00
B01D 29/01
B01D 46/52
B01D 46/00
B01D 39/20
B01D 17/04

Abstract:

The current technology relates to various filter elements configurations where a substrate layer defines a surface having a treatment. The treatment increases a roll off angle of the surface for a 50 water droplet when the surface is immersed in toluene. The filter element can have a housing and the substrate disposed in the housing. In some embodiments the substrate layer defines a plurality of pleats extending between pleat folds that form flow faces of the media. In some embodiments the substrate is incorporated into single facer media of a filter element. In some embodiments the substrate layer is incorporated in a filter element having a flow-by configuration. In some embodiments the substrate layer is incorporated in a filter element having a cross-flow configuration. Some embodiments relate to a vent. Some embodiments relate to a barrier assembly and/or a fuel filter element. Various other filter elements are described.

US Patent:

20190314745, Oct 17, 2019

Filed:

May 29, 2019

Appl. No.:

16/425371

Inventors:

- Minneapolis MN, US
Stephen K. Sontag - Maple Grove MN, US
Davis B. Moravec - Burnsville MN, US
Stuti S. Rajgarhia - Bloomington MN, US
Andrew J. Dallas - Lakeville MN, US
Vijay K. Kapoor - Eagan MN, US
Aflal Rahmathullah - Savage MN, US
Charles S. Christ - Deephaven MN, US
Joseph M. Block - Carver MN, US

Assignee:

DONALDSON COMPANY, INC. - Minneapolis MN

International Classification:

B01D 39/16
C01B 13/10
C07C 15/06
C08G 65/34

Abstract:

A substrate for use in a filter media including, for example, in a hydrocarbon fluid-water separation filter; methods of identifying the substrate; methods of making the substrate; methods of using the substrate; and methods of improving the roll off angle of the substrate. In some embodiments, the substrate includes a hydrophilic group-containing polymer or a hydrophilic group-containing polymer coating.

US Patent:

20190001246, Jan 3, 2019

Filed:

Dec 14, 2016

Appl. No.:

16/063027

Inventors:

- Minneapolis MN, US
Davis B. Moravec - Burnsville MN, US
Andrew J. Dallas - Lakeville MN, US
Scott A. Grossbauer - Bloomington MN, US
Bradly G. Hauser - Minneapolis MN, US
James N. Doyle - Bloomington MN, US
Daniel L. Tuma - St. Paul MN, US
Matthew T. Matsumoto - Pasadena CA, US
Kelly C. Robertson - Bloomington MN, US

International Classification:

B01D 39/00
B01D 37/04

Abstract:

A liquid hydrocarbon filterability system includes a liquid hydrocarbon sample source piping in fluid communication with a liquid hydrocarbon sample container. A filtration media element is in fluid communication with the liquid hydrocarbon sample source piping. Filtered liquid hydrocarbon outlet piping is in fluid communication with and downstream of the filtration media element. A flow or volume measurement element is in fluid communication with the filtered liquid hydrocarbon outlet piping and is configured to measure an amount of liquid hydrocarbon passing through the filtration media element. A constant pressure source is configured to provide liquid hydrocarbon to the filtration media element at a constant pressure.