William B Kerfoot

US Patent:

6436285, Aug 20, 2002

Filed:

Dec 22, 1999

Appl. No.:

09/470167

Inventors:

William B. Kerfoot - Falmouth MA 02540

International Classification:

C02F 172

US Classification:

210199, 210170, 210192, 210205, 2102212, 2611221, 261DIG 42, 261DIG 70

Abstract:

A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall having a plurality of microscopic openings, the second member being disposed through the hollow region of the first member. The diffuser includes an end cap to seal a first end of the microporous diffuser and an inlet cap disposed at a second end of microporous diffuser for receiving inlet fittings.

US Patent:

6447676, Sep 10, 2002

Filed:

Dec 22, 1999

Appl. No.:

09/470616

Inventors:

William B. Kerfoot - Falmouth MA 02540

International Classification:

C02F 178

US Classification:

210170, 210192, 210199, 210205, 210220, 2611221, 261DIG 42, 261DIG 70

Abstract:

A method and apparatus for treatment of contaminated water is described. The apparatus includes a container divided into at least two chambers by a wall that partially separates the two chambers, the containing having an inlet at a first one of the chambers and an outlet at a second one of the chambers. The apparatus has a first microporous diffuser disposed in a first one of the chambers of the container and arranged to receive a decontaminating gaseous agent and a second microporous diffuser disposed in a second one of the chambers and arranged to receive air. Additionally, special microporous diffusers are described.

US Patent:

6582611, Jun 24, 2003

Filed:

Jul 6, 2000

Appl. No.:

09/610830

Inventors:

William B. Kerfoot - Falmouth MA 02540

International Classification:

C02F 178

US Classification:

210747, 210759, 210760

Abstract:

A method of treating a site containing contaminants and apparatus are described The method and apparatus sparges the site with an air/ozone gas stream delivered with a hydroperoxide, which is a substantial byproduct of a reaction of a contaminant present in the aquifer or soil formation with the ozone.

US Patent:

6596161, Jul 22, 2003

Filed:

Aug 19, 2002

Appl. No.:

10/223166

Inventors:

William B. Kerfoot - Falmouth MA 02540

International Classification:

B01D 1500

US Classification:

210199, 210170, 210192, 210205, 2102212, 2611221, 261DIG 42, 261DIG 70

Abstract:

A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall having a plurality of microscopic openings, the second member being disposed through the hollow region of the first member. The diffuser includes an end cap to seal a first end of the microporous diffuser and an inlet cap disposed at a second end of microporous diffuser for receiving inlet fittings.

US Patent:

6780329, Aug 24, 2004

Filed:

Jan 30, 2003

Appl. No.:

10/354584

Inventors:

William B. Kerfoot - Falmouth MA 02540

International Classification:

C02F 178

US Classification:

210668, 210691, 210694, 210759, 210760, 210763, 210908, 4051285

Abstract:

A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall having a plurality of microscopic openings, the second member being disposed through the hollow region of the first member. The diffuser includes an end cap to seal a first end of the microporous diffuser and an inlet cap disposed at a second end of microporous diffuser for receiving inlet fittings.

US Patent:

6805798, Oct 19, 2004

Filed:

May 18, 2001

Appl. No.:

09/860659

Inventors:

William B. Kerfoot - Falmouth MA 02540

International Classification:

C02F 300

US Classification:

210620, 210759, 210760

Abstract:

This invention relates to remediation systems, and more particularly to remediation systems for water, soil, and sediment bodies using thin-layer coated microbubbles.

US Patent:

6817119, Nov 16, 2004

Filed:

Jan 24, 2002

Appl. No.:

10/056286

Inventors:

William B. Kerfoot - Falmouth MA 02540

International Classification:

E02F 388

US Classification:

37323, 37195

Abstract:

This invention relates to apparatuses and methods for subsurface mining, and more particularly to apparatuses and methods for relocating (including dredging, mining, filling, reverse-layering, replenishment) subsurface strata.

US Patent:

6827861, Dec 7, 2004

Filed:

Nov 6, 2001

Appl. No.:

09/993152

Inventors:

William B. Kerfoot - Falmouth MA 02649

International Classification:

C02F 178

US Classification:

210741, 210747, 210760, 210763, 210170, 210220, 210908, 210909, 4051285, 40512875, 16625002

Abstract:

A sparging system for in-situ groundwater remediation for removal of contamination including dissolved chlorinated hydrocarbons and dissolved hydrocarbon petroleum products including the use in injection wells of microfine bubble generators, matched to substrates of selected aquifer regions, for injection and distribution of said bubbles containing oxidizing gas through said aquifer and to selectively encapsulating gases including oxygen and ozone in duo-gas bubbles which, in the presence of co-reactant substrate material acting as a catalyst, are effective to encourage biodegradation of leachate plumes which contain biodegradable organics, or Criegee decomposition of leachate plumes containing dissolved chlorinated hydrocarbons.