Christopher P Hakanson

US Patent:

7582131, Sep 1, 2009

Filed:

Nov 22, 2006

Appl. No.:

11/562494

Inventors:

Chris E. Worthington - Saint Paul MN, US
Christopher P. Hakanson - Woodbury MN, US
Keith E. Misukanis - Eagan MN, US

Assignee:

Conwed Plastics LLC - Minneapolis MN

International Classification:

B01D 46/52

US Classification:

55501, 55499, 55521, 55DIG 5, 2104931

Abstract:

According to one aspect of the present invention, a filter assembly for removing particulate matter from a fluid stream is disclosed. The filter assembly includes a filter medium having a number of longitudinally extending spaced pleats. Opposing faces of adjacent pleats form a valley therebetween and include a pair of peak portions and a valley portion. The filter assembly further includes a plastic support net being pleated for supporting the filter medium in a pleated shape. The plastic support net includes spaced strands extending in a first direction and spaced strands extending in a second direction that is generally transverse the first direction. The strands extending in the first direction continuously extend over the valley and peak portions of opposing faces of adjacent filter medium pleats and are aligned in a direction substantially perpendicular to the longitudinal direction of the filter medium pleats.

US Patent:

7708503, May 4, 2010

Filed:

Feb 16, 2007

Appl. No.:

11/675916

Inventors:

Bartley J. Kohel - Oakdale MN, US
Keith E. Misukanis - Eagan MN, US
Christopher P. Hakanson - Woodbury MN, US

Assignee:

Conwed Plastics LLC - Minneapolis MN

International Classification:

E02D 17/20

US Classification:

4053027, 4053026, 4053024

Abstract:

In at least certain embodiments of the present invention, the present invention provides a plastic netting for use in various erosion control netting assembles. In at least one embodiment, the assembly comprises a first extruded plastic net, a second extruded plastic net secured to the first net, and a fiber matrix disposed between the nets. In at least another embodiment, the assembly comprises a first extruded plastic net, and a fiber matrix secured to and/or under the netting. In at least another embodiment, the net serves as a mulch control netting when secured to the ground over a mulch material. In yet another embodiment, the net serves as a turf reinforcement. In at least one embodiment, the net comprises a plurality of openings sufficiently sized, to enable small animals to traverse or weave through the erosion control netting assembly without getting trapped in the openings.

US Patent:

20050183329, Aug 25, 2005

Filed:

Feb 11, 2005

Appl. No.:

11/056715

Inventors:

Hans Cederblad - Minnetonka MN, US
Keith Misukanis - Eagan MN, US
Christopher Hakanson - Woodbury MN, US
Andrew Thoen - Harris MN, US

International Classification:

A01C001/04

US Classification:

047056000

Abstract:

The present invention provides a biodegradable extruded netting. The netting comprises a plurality of interconnected strands with at least some of the strands comprising a biodegradable composition comprising polylactic acid polymer and biodegradable plasticizer. In at least one embodiment, at least 10% of the strands are made of the biodegradable composition. The present invention also relates to a method for making biodegradable extruded netting. The method comprises extruding strands of polymeric material to form a netting wherein at least some of the strands are formed of the biodegradable composition.

US Patent:

20070056899, Mar 15, 2007

Filed:

Sep 14, 2006

Appl. No.:

11/531847

Inventors:

Christopher Hakanson - Woodbury MN, US
Bartley Kohel - Oakdale MN, US
Chris Worthington - Saint Paul MN, US
Andrew Thoen - Harris MN, US

Assignee:

Conwed Plastics LLC - Minneapolis MN

International Classification:

B01D 29/085

US Classification:

210493500, 442050000, 442387000, 428175000, 428176000, 210503000

Abstract:

In at least one embodiment, the present invention provides a biaxially oriented extruded netting. The netting comprises a plurality of interconnected strands with at least some of the strands comprise a HDPE composition comprising a plurality of interconnected strands, with at least some of the strands comprising a composition comprising HDPE. In at least certain embodiments, the net has a strength-to-weight ratio of at least 2.0 lb/(in.×PMSF). In at least one embodiment, at least 50% of the strands are made of the HDPE composition. The present invention also relates to a method for making biaxially oriented extruded HDPE netting. The method comprises extruding strands of polymer material to form a netting wherein at least some of the strands are formed of the HDPE and biaxially orienting the netting.

US Patent:

20120208417, Aug 16, 2012

Filed:

Feb 16, 2011

Appl. No.:

13/028994

Inventors:

Chris E. Worthington - St. Paul MN, US
Guangda Shi - Woodbury MN, US
Andrew J. Thoen - Harris MN, US
Christopher P. Hakanson - Woodbury MN, US
Bradley J. Budde - Shakopee MN, US

International Classification:

B32B 5/02
B29C 47/30

US Classification:

442 51, 15624415

Abstract:

In at least one embodiment, a netting comprising an interconnected network including a plurality of coextruded strands integrally joined, the coextruded strands having a first layer including a first thermoplastic composition and a second layer bonded to the first thermoplastic layer and including a second thermoplastic composition. The netting also includes a third layer bonded to the second layer and spaced apart from the first layer. The third layer includes a third thermoplastic composition. The netting has a friction angle ranging from 10 degrees to 40 degrees.

US Patent:

20120322331, Dec 20, 2012

Filed:

Jun 14, 2011

Appl. No.:

13/159964

Inventors:

Chris E. Worthington - St. Paul MN, US
Andrew J. Thoen - Harris MN, US
Guangda Shi - Woodbury MN, US
Christopher P. Hakanson - Woodbury MN, US

Assignee:

CONWED PLASTICS LLC - Minneapolis MN

International Classification:

B32B 5/26
D04H 3/16

US Classification:

442381, 156167

Abstract:

In at least one embodiment, a multifunctional mat is provided comprising an interconnected network including a plurality of coextruded integrally joined strands forming a netting and a film bonded to the netting. The coextruded strands have at least three layers having three different compositions. The netting has an average kinetic coefficient ranging from 0.006 to 2.4 when measured according to ASTM D-1894 and a minimum absolute difference in adhesion temperature between the second thermoplastic composition and the other two thermoplastic compositions ranges from 10 C. to 120 C.