David Timothy Seitz

US Patent:

6524681, Feb 25, 2003

Filed:

Oct 2, 1998

Appl. No.:

09/155687

Inventors:

David S. Seitz - Woodbury MN
Elizabeth C. Edblom - Minneapolis MN
Karl T. McKeague - Cottage Grove MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

D06N 704

US Classification:

428143, 428147, 428172, 192107 M, 188251 R, 188257, 180337, 105 14, 104 2, 104 18, 74340

Abstract:

A friction material for a friction facing member useful for transmitting torque includes a backing having a front surface and a rear surface. A plurality of precisely shaped friction composites defining patterned friction coating are attached to the front surface of the backing. The precisely shaped friction composites include a plurality of friction particles dispersed in a binder. In one embodiment, the friction material has an elastic modulus of about 10 dynes/cm or less.

US Patent:

7972670, Jul 5, 2011

Filed:

Nov 19, 2004

Appl. No.:

10/595835

Inventors:

David S. Seitz - Woodbury MN, US
Kanta Kumar - Maplewood MN, US
Larry A. Meixner - Woodbury MN, US
Mieczyslaw H. Mazurek - Roseville MN, US
Stefan O. Dietrich - Ratingen, DE

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 33/00
B32B 5/02
B32B 3/00

US Classification:

428 401, 428 418, 428 98, 428141, 428142, 428152, 428153, 428156, 428161, 428165, 428174

Abstract:

A structured paper release liner () for use with an article () backed with a pressure sensitive adhesive, an adhesive-backed article assembly () and methods of making each are disclosed. The liner () comprises a piece of paper () having a release side free of a structural support layer, a back side, and a structured release surface () having a pattern formed into the paper () on the release side. A release material is on the structured release surface of the paper. The pattern formed in the paper () is designed so as to form fluid egress channels in a bonding surface of the pressure sensitive adhesive (). The fluid egress channels define a structured bonding surface () having exit pathways for fluid to bleed out from behind the article when the structured bonding surface () is adhered to or otherwise disposed on a substrate.

US Patent:

20200368690, Nov 26, 2020

Filed:

Aug 14, 2018

Appl. No.:

16/638171

Inventors:

- St. Paul MN, US
David Scott Seitz - Woodbury MN, US
Eric F. Funkenbusch - Hudson WI, US
Ryan C. Shirk - Mendota Heights MN, US
Jinsheng Zhou - Woodbury MN, US
Eric J. Hanson - Hudson WI, US
Moses M. David - Wells TX, US
Kazuhiko Mizuno - Tokyo, JP

International Classification:

B01D 61/36
B01D 71/32
B01D 69/12
B01D 71/46
B01D 67/00
B01D 69/02

Abstract:

A separation membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., a first liquid) from a mixture comprising the first fluid (e.g., first liquid) and a second fluid (e.g., second liquid), wherein the separation membrane includes a polymeric ionomer that has a highly fluorinated backbone and recurring pendant groups according to the following formula (Formula I): —O—R—[—SO—N(Z)—SO—R—]—[SO]-Q wherein: Ris a perfluorinated organic linking group; R is an organic linking group; Z is H, a monovalent cation, or a multivalent cation; Q is H, F, —NH, —O-2 Y+, or —CF; Y is H, a monovalent cation, or a multivalent cation; x=1 to 4; m=0 to 6; and n=0 or 1; with the proviso that at least one of m or n must be non-zero.

US Patent:

20200164319, May 28, 2020

Filed:

Aug 14, 2018

Appl. No.:

16/638167

Inventors:

- St. Paul MN, US
Ryan C. Shirk - Mendota Heights MN, US
David Scott Seitz - Woodbury MN, US
Moses M. David - Wells TX, US

International Classification:

B01D 69/12
B01D 69/10
B01D 61/36

Abstract:

A composite membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., first liquid such as a high octane compound) from a mixture comprising the first fluid (e.g., first liquid such as a high octane compound) and a second fluid (e.g., second liquid such as gasoline). The composite membrane includes a porous substrate comprising opposite first and second major surfaces, and a plurality of pores. A pore-filling polymer is disposed in at least some of the pores so as to form a layer having a thickness within the porous substrate. The composite membrane further includes at least one of: (a) an ionic liquid mixed with the pore-filling polymer; or (b) an amorphous fluorochemical film disposed on the composite membrane.

US Patent:

20200030748, Jan 30, 2020

Filed:

Oct 7, 2019

Appl. No.:

16/594502

Inventors:

- St. Paul MN, US
Ryan C. Shirk - Mendota Heights MN, US
David Scott Seitz - Woodbury MN, US
Moses M. David - Woodbury MN, US

International Classification:

B01D 61/36
B01D 69/12
B01D 67/00
B01D 69/10
B01D 71/40
B01D 71/48
B01D 71/52
B01D 71/70

Abstract:

A composite membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., first liquid) from a mixture comprising the first fluid (e.g., first liquid) and a second fluid (e.g., second liquid). The composite membrane includes a porous substrate comprising opposite first and second major surfaces, and a plurality of pores. A pore-filling polymer is disposed in at least some of the pores so as to form a layer having a thickness within the porous substrate. The composite membrane further includes at least one of: (a) an ionic liquid mixed with the pore-filling polymer; or (b) an amorphous fluorochemical film disposed on the composite membrane.

US Patent:

20180229186, Aug 16, 2018

Filed:

Jul 1, 2016

Appl. No.:

15/737955

Inventors:

- Sain Paul MN, US
David S. Seitz - Woodbury MN, US
Eric F. Funkenbusch - Hudson WI, US
Ryan C. Shirk - Mendota Heights MN, US
Jinsheng Zhou - Woodbury MN, US
Eric J. Hanson - Hudson WI, US
Moses M. David - Woodbury MN, US
Kazuhiko Mizuno - Tokyo, JP

International Classification:

B01D 61/36
B01D 69/12
B01D 69/10
B01D 67/00
B01D 71/32
B01D 71/46
B01D 63/10

Abstract:

A separation membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., a first liquid) from a mixture comprising the first fluid (e.g., first liquid) and a second fluid (e.g., second liquid), wherein the separation membrane includes a polymeric ionomer that has a highly fluorinated backbone and recurring pendant groups according to the following formula (Formula I): —O—R—[—SO—N(Z′)—SO—R—]—[SO]-Q wherein: Ris a perfluorinated organic linking group; R is an organic linking group; Z is H, a monovalent cation, or a multivalent cation; Q is H, F, —NH, —NH, —OY, or —CF+1; Y is H, a monovalent cation, or a multivalent cation; x=1 to 4; m=0 to 6; and n=0 or 1; with the proviso that at least one of morn must be non-zero

US Patent:

20180154311, Jun 7, 2018

Filed:

Jul 1, 2016

Appl. No.:

15/737945

Inventors:

- St. Paul MN, US
Ryan C. Shirk - Mendota Heights MN, US
David Scott Seitz - Woodbury MN, US
Moses M. David - Woodbury MN, US

International Classification:

B01D 61/36
B01D 67/00
B01D 69/10
B01D 69/12
B01D 71/40
B01D 71/48
B01D 71/52
B01D 71/70

Abstract:

A composite membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., first liquid such as a high octane compound) from a mixture comprising the first fluid (e.g., first liquid such as a high octane compound) and a second fluid (e.g., second liquid such as gasoline). The composite membrane includes a porous substrate comprising opposite first and second major surfaces, and a plurality of pores. A pore-filling polymer is disposed in at least some of the pores so as to form a layer having a thickness within the porous substrate. The composite membrane further includes at least one of: (a) an ionic liquid mixed with the pore-filling polymer; or (b) an amorphous fluorochemical film disposed on the composite membrane.

US Patent:

20170291143, Oct 12, 2017

Filed:

Sep 24, 2015

Appl. No.:

15/511714

Inventors:

- St. Paul MN, US
Ryan C. Shirk - Mendota Heights MN, US
Kazuhiko Mizuno - Tokyo, JP
David S. Seitz - Woodbury MN, US

International Classification:

B01D 61/36
B01D 69/12
B01D 67/00
B01D 63/10
B01D 65/00

Abstract:

A separation module including at least one separation leaf that includes two porous composite membranes and a permeate mesh spacer sandwiched therebetween with and an edge-seal bond that adheres the membranes and spacer together.