Peter Kjell Nelson
Engineers at Chase Ct, Boulder, CO
License number
Colorado 52346
Issued Date
Dec 18, 1991
Renew Date
Dec 18, 1991
Type
Engineer Intern
Address
Address
3688 Chase Ct, Boulder, CO 80303
Professional information
Principal Consultant, Sierra Scientific Solutions, Llc
Position:
Principal Consultant at Sierra Scientific Solutions, LLC
Location:
Boulder, Colorado
Industry:
Research
Work:
Sierra Scientific Solutions, LLC
- Boulder, CO since Jan 2012
-
Principal Consultant
Micro-g LaCoste
- Lafayette, Colorado Mar 2011 - Jan 2012
-
Senior Scientist
National Center for Atmospheric Research
Mar 2006 - Mar 2011
-
Engineer IV
Technical Manufacturing Corp.
Jun 1994 - Nov 2004
-
Vice President, Chief Technical Officer
Education:
University of California, Irvine 1984 - 1989
Ph.D., Physics Occidental College 1980 - 1984
B.A., Physics, Math minor
Ph.D., Physics Occidental College 1980 - 1984
B.A., Physics, Math minor
Interests:
Hiking, travel, art, music
Serum Sampling Apparatus And Catheter
US Patent:
2009026, Oct 22, 2009
Filed:
Apr 17, 2008
Appl. No.:
12/105210
Inventors:
Stephen D. Walker - Boulder CO, US
Peter E. Nelson - Boulder CO, US
R. Dale Zellers - Boulder CO, US
Charles W. Henry - Boulder CO, US
John E. Repine - Boulder CO, US
Peter E. Nelson - Boulder CO, US
R. Dale Zellers - Boulder CO, US
Charles W. Henry - Boulder CO, US
John E. Repine - Boulder CO, US
International Classification:
A61B 5/153, A61B 5/1473
US Classification:
600345, 600581, 600583
Abstract:
In a serum measurement device, an analyte concentration measurement apparatus facilitates sampling and analysis of analytes in body fluid and includes an implantable serum sampling catheter comprising a biocompatible tubing enclosing a vacuum release lumen and a serum lumen that are interconnected by a port. The serum lumen is separated from the sampling catheter exterior by a membrane barrier. The sampling catheter is configured for drawing a serum sample from a body fluid compartment by creation of suction in the serum lumen.
Lactate Concentration Measurement Device
US Patent:
2009004, Feb 19, 2009
Filed:
Aug 17, 2007
Appl. No.:
11/840528
Inventors:
Stephen D. Walker - Boulder CO, US
Devon J. Dallmann - Boulder CO, US
Charles W. Henry - Boulder CO, US
Peter E. Nelson - Boulder CO, US
R. Dale Zellers - Boulder CO, US
John E. Repine - Boulder CO, US
Devon J. Dallmann - Boulder CO, US
Charles W. Henry - Boulder CO, US
Peter E. Nelson - Boulder CO, US
R. Dale Zellers - Boulder CO, US
John E. Repine - Boulder CO, US
International Classification:
G01N 21/00, G01N 33/48
US Classification:
422 55, 436 63
Abstract:
A lactate concentration measurement apparatus comprising a housing enclosing a sample chamber configured for holding a body fluid sample and measurement photo-optics that generate light and monitor light intensity along a plurality of optical paths in the sample chamber. The apparatus further comprises a plurality of optical filters aligned in respective optical paths of the optical path plurality comprising at least a first optical filter with light absorption by lactate and water and a second optical filter with light absorption to water alone. A logic determines lactate concentration based on a ratio of intensities detected at a first detector in an optical path intersected by the first optical filter and detected at a second detector in an optical path intersected by the second optical filter.
Analyte Concentration Measurement Device
US Patent:
2009001, Jan 15, 2009
Filed:
Jul 13, 2007
Appl. No.:
11/777940
Inventors:
Stephen D. Walker - Boulder CO, US
Devon J. Dallmann - Boulder CO, US
Charles W. Henry - Boulder CO, US
Peter E. Nelson - Boulder CO, US
R. Dale Zellers - Boulder CO, US
John E. Repine - Boulder CO, US
Devon J. Dallmann - Boulder CO, US
Charles W. Henry - Boulder CO, US
Peter E. Nelson - Boulder CO, US
R. Dale Zellers - Boulder CO, US
John E. Repine - Boulder CO, US
International Classification:
A61B 5/00
US Classification:
600316
Abstract:
A method for measuring concentration of an analyte in body fluid comprises acquiring a body fluid sample, emitting light into the body fluid sample, and detecting emitted light intensity on a plurality of optical paths through the body fluid sample. A plurality of optical filters are arranged in respective optical paths of the optical path plurality comprising at least a first optical filter with light absorption by an analyte and water and a second optical filter with light absorption to water alone. Light intensity passed through the first optical filter and passed through the second optical filter is measured and analyte concentration is determined based on a ratio of intensities detected at a detector in an optical path intersected by the first optical filter and detected at a detector in an optical path intersected by the second optical filter.
Infrared Sample Chamber
US Patent:
2009001, Jan 15, 2009
Filed:
Jul 13, 2007
Appl. No.:
11/777961
Inventors:
Stephen D. Walker - Boulder CO, US
Charles W. Henry - Boulder CO, US
Peter E. Nelson - Boulder CO, US
John E. Repine - Boulder CO, US
Charles W. Henry - Boulder CO, US
Peter E. Nelson - Boulder CO, US
John E. Repine - Boulder CO, US
International Classification:
A61M 37/00
US Classification:
604 608, 600310
Abstract:
A body fluid analysis apparatus comprises a unitary housing containing a single-celled chamber and having an entry portal for communicating body fluid between a patient body and the chamber. A barrier coupled at the entry portal prevents selected components of the body fluid from entering the chamber.