Charles Douglas Swift

US Patent:

6479276, Nov 12, 2002

Filed:

Aug 23, 2001

Appl. No.:

09/938478

Inventors:

Randall R. Thom - Tualatin OR
Paul C. John - Beaverton OR
Charles S. Swift - Milwaukie OR
James Boswell - Montgomery TX
William C. Stewart - Gladstone OR

Assignee:

Bio-Reaction Industries, LLC - Tualatin OR

International Classification:

A61L 901

US Classification:

435266, 4352941, 4352971, 435821, 210615, 210617, 210620, 210151, 96122, 96135

Abstract:

Air laden with biodegradable volatile organic compounds is passed sequentially through a first filter bed containing a biologically inert filter media and a second filter bed containing a biologically active filter media. Water is present in the biologically active filter media and the biologically inert filter media. Water that drains from the second filter bed is collected and supplied to the first filter bed.

US Patent:

6524849, Feb 25, 2003

Filed:

Aug 23, 2001

Appl. No.:

09/938466

Inventors:

Baron V. Adams - Oregon City OR
Paul C. John - Beaverton OR
Charles S. Swift - Milwaukie OR

Assignee:

Bio-Reaction Industries, LLC - Tualatin OR

International Classification:

C12M 114

US Classification:

4352991, 4352931, 4352971, 210150, 210615, 210616, 261 72, 261 94

Abstract:

A biological filter element includes a support element of generally ellipsoidal configuration. The support element has two opposite polar regions and includes a medial ring intermediate the two opposite polar regions and a plurality of arcuate ribs extending from the medial ring to each polar region. Adjacent arcuate ribs are angularly spaced to provide access to an interior space of the support element. A cohesive body of biologically active material surrounds the support element and penetrates the interior space of the support element.