David William Hendrickson

US Patent:

6532804, Mar 18, 2003

Filed:

May 15, 2001

Appl. No.:

09/858059

Inventors:

David William Hendrickson - Hibbing MN

Assignee:

Cliffs Mining Services Company - Cleveland OH

International Classification:

G01N 2562

US Classification:

73 75, 73 76, 73 73, 7386311, 7386391

Abstract:

An on-line moisture analyzer and method of analyzing the moisture content of an ore concentrate. A sample conveyor moves a sample of the concentrate to be analyzed to an aluminum pan that receives and holds the sample of the concentrate. A horizontal linear slide having a pneumatic vertical lift mounted to rotary arm is detachably connected to the aluminum pan by gripping fingers that detachably engage the pan. A scale is accessible by the conveyance member for weighing the sample. An oven also accessible by the conveyance member has a door that has a complimentary shape relative to a cross section of the sample container and conveyance member is used for heating the sample. A programmable logic controller controls the conveyance member and the oven door. A data processing unit receives data from the scale and determines a moisture content based on the data.

US Patent:

7347331, Mar 25, 2008

Filed:

Aug 13, 2004

Appl. No.:

10/917941

Inventors:

David W. Hendrickson - Hibbing MN, US
Richard F. Kiesel - Hibbing MN, US
Rodney L. Bleifuss - Grand Rapids MN, US

Assignee:

Regents of the University of Minnesota - Minneapolis MN

International Classification:

B07C 9/00
B07C 5/00

US Classification:

209693, 209691, 209692, 209707

Abstract:

Apparatus, methods and systems are used to separate fines from objects of a feed mixture being processed (e. g. , iron bearing pellets, chips and dust). For example, at least a portion of an endless belt defining a channel is movable up an incline relative to horizontal (e. g. , an incline that is at an angle relative to horizontal that is greater than an angle of repose associated with the objects, but less than an angle of repose associated with the fines being removed). Further, obstruction elements may be used on the endless belt to impede the flow of the fines down the incline.

US Patent:

7939154, May 10, 2011

Filed:

Oct 31, 2008

Appl. No.:

12/262861

Inventors:

Donald R. Fosnacht - Hermantown MN, US
David W. Hendrickson - Hibbing MN, US
Richard Kiesel - Hibbing MN, US
Lawrence M. Zanko - Two Harbors MN, US
Tamara R. Diedrich - Duluth MN, US

Assignee:

Regents of the University of Minnesota - St. Paul MN

International Classification:

B32B 3/26
B32B 5/16

US Classification:

428 63, 404 75, 106691

Abstract:

A road and repair system and/or method using one or more components including a plurality of magnetite concentrate particles, at least one acidic activator including phosphate anions, and a plurality of reactive aggregate particles including iron.

US Patent:

8020706, Sep 20, 2011

Filed:

Aug 11, 2005

Appl. No.:

11/660297

Inventors:

David W. Hendrickson - Hibbing MN, US
Richard F. Kiesel - Hibbing MN, US
Rodney L. Bleifuss - Grand Rapids MN, US

Assignee:

Regents of the University of Minnesota - St. Paul MN

International Classification:

B07C 5/00
B07C 1/00
B65G 15/42
B65G 21/00

US Classification:

209707, 209692, 1988615, 1988611, 1986991

Abstract:

Apparatus, methods and systems are used to separate fines from objects of a feed mixture being processed (e. g. , iron bearing pellets, chips and dust). For example, at least a portion of an endless belt defining a channel is movable up an incline relative to horizontal (e. g. , an incline that is at an angle relative to horizontal that is greater than an angle of repose associated with the objects, but less than an angle of repose associated with the fines being removed). Further, obstruction elements may be used on the endless belt to impede the flow of the fines down the incline.

US Patent:

20050065873, Mar 24, 2005

Filed:

Sep 17, 2004

Appl. No.:

10/944318

Inventors:

David Hendrickson - Hibbing MN, US
Gerald Lipovetz - Pengilly MN, US

International Classification:

G06F017/60

US Classification:

705038000

Abstract:

The present invention relates to a method and system of supplying loaned funds to employees for increased participation in employee retirement contribution plans. In particular, the present invention relates to a method and system enabling employees to benefit from retirement plan contributions from employers that match employee contributions, through loaned income supplements to employees under current and future ERISA laws.

US Patent:

20080142417, Jun 19, 2008

Filed:

Feb 19, 2008

Appl. No.:

12/070510

Inventors:

David W. Hendrickson - Hibbing MN, US
Richard F. Kiesel - Hibbing MN, US
Rodney L. Bleifuss - Grand Rapids MN, US

Assignee:

Regents of the University of Minnesota - St. Paul MN

International Classification:

B07B 13/065
B07C 5/06

US Classification:

209661, 209692

Abstract:

Apparatus, methods and systems are used to separate fines from objects of a feed mixture being processed (e.g., iron bearing pellets, chips and dust). For example, at least a portion of an endless belt defining a channel is movable up an incline relative to horizontal (e.g., an incline that is at an angle relative to horizontal that is greater than an angle of repose associated with the objects, but less than an angle of repose associated with the fines being removed). Further, obstruction elements may be used on the endless belt to impede the flow of the fines down the incline.

US Patent:

20080307960, Dec 18, 2008

Filed:

Mar 13, 2006

Appl. No.:

11/886019

Inventors:

David W. Hendrickson - Hibbing MN, US
Iwao Iwasaki - Grand Rapids MN, US
David J. Englund - Bovey MN, US
Thomas R. Larson - Montgomery TX, US
Blair R. Benner - Grand Rapids MN, US
Donald R. Fosnacht - Hermantown MN, US
John Engesser - Grand Rapids MN, US

International Classification:

B01D 53/02
B01J 20/00
B01J 20/02
B01J 20/22
B32B 1/00

US Classification:

95 28, 96 1, 502400, 502406, 502401, 502411, 502415, 428402

Abstract:

Absorbent magnetic particles are used to remove air pollutants. The adsorbent magnetic particles can adsorb various air pollutants, including nitrogen oxides, sulfur oxides, and mercury, and may be regenerated for reuse.

US Patent:

20220323653, Oct 13, 2022

Filed:

Jun 17, 2022

Appl. No.:

17/843150

Inventors:

- Plymouth MN, US
Peter Barnett - Shakopee MN, US
David Hendrickson - Coon Rapids MN, US

International Classification:

A61L 29/08
A61M 25/10
A61L 29/16
A61L 29/06
A61M 29/02

Abstract:

Various embodiments disclosed relate to drug-coated balloon catheters for treating strictures in body lumens and methods of using the same. A drug-coated balloon catheter for delivering a therapeutic agent to a target site of a body lumen stricture includes an elongated balloon having a main diameter. The balloon catheter includes a coating layer overlying an exterior surface of the balloon. The coating layer includes one or more water-soluble additives and an initial drug load of a therapeutic agent.