Allen R Boyce

US Patent:

6398382, Jun 4, 2002

Filed:

Jun 12, 2000

Appl. No.:

09/591863

Inventors:

Allen R. Boyce - Portland OR
Matthew J. Brinkman - Brush Prairie WA

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

F21V 3103

US Classification:

362101, 362373

Abstract:

An illumination apparatus for indicating the liquid level in a chemical storage tank is provided. The apparatus includes a transparent globe surrounding a light bulb mounted by flanges to upper portions of a storage tank, and being illuminated by an external electrical supply. Optionally the light bulb may be cooled by either allowing gas or air contained in the storage tank pass through a hole in the globe to interact with and cool the light bulb, or supplying a gas to the globe and circulating it around the light bulb. A shadow line is cast at the surface level of the liquid in the tank, and can be visibly seen through the translucent walls of the tank from some distance away.

US Patent:

6402957, Jun 11, 2002

Filed:

Oct 15, 1999

Appl. No.:

09/418880

Inventors:

Allen R. Boyce - Portland OR

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

B01D 6100

US Classification:

210652, 210748, 210754, 210753, 210681

Abstract:

A system and method are provided which removes bromine biocide used in effluent process streams without the use of chemicals or complex mechanical systems. In particular, the system and method of the present invention remove bromine biocide by photodissociating the bromine, thereby forming innocuous salts. Ultraviolet energy may be used to provide the energy for photodissociation, in particular ultraviolet energy supplied by medium pressure Hg vapor lamps.

US Patent:

6416669, Jul 9, 2002

Filed:

Nov 10, 2000

Appl. No.:

09/709804

Inventors:

Allen Boyce - Portland OR
Michael Steven Marchando - Colorado Springs CO
James Kenneth Webster - Bainbridge Island WA

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

B01D 6300

US Classification:

210638, 210650, 210651, 210681

Abstract:

The present invention is directed to the use a of resin trap device to remove large resin particles from water in a water purification system to thereby protect downstream ultrafiltration equipment. The present invention includes a resin trap device which comprises a housing and a resin strainer disposed within the housing. The resin strainer includes a plurality of openings having a particle pass size of between about 100 m and about 250 m, and thus allows water and small particles to pass through the resin trap device and large particles to be retained in the resin trap device. The present invention also includes a water purification system including a water source, a resin bed and the resin trap device, and a method of purifying water using the resin trap device of the invention.

US Patent:

6475385, Nov 5, 2002

Filed:

Nov 10, 2000

Appl. No.:

09/710248

Inventors:

Allen Boyce - Portland OR
Michael Steven Marchando - Colorado Springs CO
James Kenneth Webster - Bainbridge Island WA

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

B01D 6300

US Classification:

2102572, 210266, 210289, 210291, 2103216

Abstract:

The present invention is directed to the use of a resin trap device to remove large resin particles from water in a water purification system to thereby protect downstream ultrafiltration equipment. The present invention includes a resin trap device which comprises a housing and a resin strainer disposed within the housing. The resin strainer includes a plurality of openings having a particle pass size of between about 100 m and about 250 m, and thus allows water and small particles to pass through the resin trap device and large particles to be retained in the resin trap device. The present invention also includes a water purification system including a water source, a resin bed and the resin trap device, and a method of purifying water using the resin trap device of the invention.

US Patent:

6649065, Nov 18, 2003

Filed:

Mar 27, 2002

Appl. No.:

10/108037

Inventors:

Allen R. Boyce - Portland OR

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

B01D 6100

US Classification:

210652, 210760, 210663, 210900, 210748, 210695, 2101991, 2102571

Abstract:

A system and method are provided which removes bromine biocide used in effluent process streams without the use of chemicals or complex mechanical systems. In particular, the system and method of the present invention remove bromine biocide by photodissociating the bromine, thereby forming innocuous salts. Ultraviolet energy may be used to provide the energy for photodissociation, in particular ultraviolet energy supplied by medium pressure Hg vapor lamps.

US Patent:

56518943, Jul 29, 1997

Filed:

Dec 13, 1995

Appl. No.:

8/612796

Inventors:

Allen R. Boyce - Portland OR
James S. Yates - Vancouver WA

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

B01D 6300

US Classification:

210652

Abstract:

An ultrapure water purification scheme that incorporates the use of certain RO filtration membranes that are especially susceptible to oxidative attack employs the combination reducing/metals scavenger/biocidal agent dithiocarbamate as a pretreatment additive to maintain a non-oxidizing environment, to bind contaminant metals to improve their removal from source water, and to reduce microbial content. In addition, the generation of oxidants by cavitation effects is avoided by a reduced pressure retentate recycle. Both measures prevent oxidative attack and fouling of the RO membranes.

US Patent:

63259834, Dec 4, 2001

Filed:

Apr 19, 2000

Appl. No.:

9/556117

Inventors:

Andrew J. Bomber - Vancouver WA
Allen R. Boyce - Portland OR
Debasish Mukhopadhyay - Palo Alto CA

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

B01D 5354
B01D 5378

US Classification:

423235

Abstract:

A treatment system for process exhaust streams containing NOx. The system includes a plurality of sequential scrubbing assemblies that collectively receive and contact a process exhaust stream containing NOx and a water stream to produce a product exhaust stream with a concentration of NOx that is below a determined threshold value. The removed NOx forms a portion of a system waste liquid stream that includes a majority of the NOx removed from the process exhaust stream.

US Patent:

61836370, Feb 6, 2001

Filed:

Jul 23, 1998

Appl. No.:

9/121369

Inventors:

Allen Boyce - Portland OR
Michael Steven Marchando - Colorado Springs CO
James Kenneth Webster - Bainbridge Island WA

Assignee:

SEH America, Inc. - Vancouver WA

International Classification:

B01D 6300

US Classification:

2102572

Abstract:

The present invention is directed to the use of a resin trap device to remove large resin particles from water in a water purification system to thereby protect downstream ultrafiltration equipment. The present invention includes a resin trap device which comprises a housing and a resin strainer disposed within the housing. The resin strainer includes a plurality of openings having a particle pass size of between about 100. mu. m and about 250. mu. m, and thus allows water and small particles to pass through the resin trap device and large particles to be retained in the resin trap device. The present invention also includes a water purification system including a water source, a resin bed and the resin trap device, and a method of purifying water using the resin trap device of the invention.