Bruce E Johnsen

US Patent:

6872370, Mar 29, 2005

Filed:

Sep 24, 2001

Appl. No.:

09/962177

Inventors:

John Arthur Cooper - Beaverton OR, US
Sarah Catherine Fry - Beaverton OR, US
Bruce Edward Johnsen - Tigard OR, US

Assignee:

Cooper Environmental Services - Portland OR

International Classification:

B01J008/00
B01J020/22
B01J020/26

US Classification:

423210, 502401, 502402, 502439

Abstract:

An apparatus and method for removing mercury, and in particular elemental mercury, from a fluid stream by exposing the fluid stream to a polyethersulfone surface onto which has been loaded elemental iodine. Elemental iodine is loaded onto the polyethersulfone surface by immersing the polyethersulfone substrate in an iodine/ethanol solution, then removing the substrate from the iodine/ethanol solution and rinsing in ethanol.

US Patent:

7381388, Jun 3, 2008

Filed:

Jun 7, 2004

Appl. No.:

10/863039

Inventors:

John Arthur Cooper - Beaverton OR, US
Sarah Catherine Fry - Portland OR, US
Bruce Edward Johnsen - Tigard OR, US

Assignee:

Cooper Environmental Services LLC - Portland OR

International Classification:

B01D 53/64

US Classification:

423210

Abstract:

A method for removing mercury, and in particular elemental mercury, from a fluid stream by blending the fluid stream with a second stream comprising iodine. The blended stream is then passed through at least one filter, which is capable of removing oxidized forms of mercury from gas streams.

US Patent:

7539282, May 26, 2009

Filed:

Apr 7, 2005

Appl. No.:

11/101792

Inventors:

John Arthur Cooper - Beaverton OR, US
Sarah Catherine Fry - Beaverton OR, US
Bruce Edward Johnsen - Tigard OR, US

Assignee:

Cooper Environmental Services LLC - Portland OR

International Classification:

G01N 23/223

US Classification:

378 47, 378 44, 378 45, 378 48

Abstract:

A method of analyzing a fluid sample by XRF includes the steps of: depositing the fluid sample onto a substrate, exposing the sample and the substrate to an x-ray emission, generating a first analytical signal responsive to the x-ray emission, providing an operable first reference material having a first extended position above the substrate and in communication with the x-ray emission, periodically extending the first reference material to its first extended position, generating a first calibration signal, providing an operable second reference material having a first extended position below the substrate and in communication with the x-ray emission, and periodically extending the second reference material to its first extended position and generating at least one second calibration signal. The first and second calibration signals are compared with predetermined values. The first and second reference materials also have second retracted positions.

US Patent:

7572419, Aug 11, 2009

Filed:

Oct 21, 2003

Appl. No.:

10/690785

Inventors:

John Arthur Cooper - Beaverton OR, US
Sarah Catherine Fry - Beaverton OR, US
Bruce Edward Johnsen - Tigard OR, US

Assignee:

Cooper Environmental Services LLC - Portland OR

International Classification:

B01J 8/00
B01J 20/22

US Classification:

423210, 502401, 502402

Abstract:

An apparatus and method for removing mercury, and in particular elemental mercury, from a fluid stream by exposing the fluid stream to a polyethersulfone or filter-coated with anion exchange resin, or anion exchange resin-coated surface onto which has been loaded elemental iodine. Elemental iodine is loaded onto the PES or anion exchange resin-coated surface by immersing the PES or anion exchange resin-coated substrate in an iodine/pentane solution, then removing the substrate from the iodine/pentane solution and rinsing in pentane.

US Patent:

20030118493, Jun 26, 2003

Filed:

Oct 11, 2002

Appl. No.:

10/269816

Inventors:

John Cooper - Beaverton OR, US
Sarah Fry - Beaverton OR, US
Bruce Johnsen - Tigard OR, US

International Classification:

B01D053/64

US Classification:

423/210000

Abstract:

An apparatus and method for removing mercury, and in particular elemental mercury, from a fluid stream by exposing the fluid stream to a polyethersulfone or filter-coated with anion exchange resin, or anion exchange resin-coated surface onto which has been loaded elemental iodine. Elemental iodine is loaded onto the PES or anion exchange resin-coated surface by immersing the PES or anion exchange resin-coated substrate in an iodine/pentane solution, then removing the substrate from the iodine/pentane solution and rinsing in pentane.

US Patent:

20080296400, Dec 4, 2008

Filed:

Jul 14, 2005

Appl. No.:

11/183244

Inventors:

John Arthur Cooper - Beaverton OR, US
Douglas Coleman Barth - Tigard OR, US
Bruce Edward Johnsen - Tigard OR, US
Michael Patrick Nakanishi - Happy Valley OR, US
Krag Allen Patterson - Portland OR, US
Catherine Anne Yanca - Portland OR, US

International Classification:

B05B 1/24
B05B 17/04

US Classification:

239 11, 239135

Abstract:

An apparatus and method for generating an aerosol wherein the aerosol has a known concentration of metals or other chemical components, and wherein the aerosol concentration remains constant over a long period of time, rendering the apparatus and method suitable for application as a reference standard

US Patent:

20090108090, Apr 30, 2009

Filed:

Dec 31, 2008

Appl. No.:

12/347486

Inventors:

John A. Cooper - Beaverton OR, US
Douglas C. Barth - Tigard OR, US
Bruce E. Johnsen - Tigard OR, US

Assignee:

Cooper Environmental Services LLC - Portland OR

International Classification:

B05B 7/24

US Classification:

239 8, 239411

Abstract:

A liquid comprising an analyte can be nebulized to produce droplets, and the droplets can be entrained in a carrier fluid flow. A portion of the droplets can be selected to remain entrained in the carrier fluid flow, thereby producing a selected droplet fluid flow including the carrier fluid and the selected portion of the droplets. The selected droplet fluid flow can be dried to produce an aerosol flow containing particles comprising the analyte. In addition, an amount of the liquid consumed in producing the aerosol flow can be quantified.