David L Schroder

US Patent:

6770205, Aug 3, 2004

Filed:

Aug 7, 2002

Appl. No.:

10/213637

Inventors:

David Lawrence Schroder - Sylvania OH 43560
Daniel William Oberle - Sylvania OH 43560
James R. Burns - Haslett MI 48840
Thomas Barton Cole - Kewadin MI 49648

International Classification:

C02F 128

US Classification:

210668, 134 7, 210679, 210694, 210747, 4051285

Abstract:

A method for pollutants using an iron-impregnated, carbon-coated silica sand with the iron containing between to and 16 percent silicon. The invention provides an improved method for performing remeditation of pollutants by dissolved metal reactions while minimizing interferences caused by oxide fouling from oxygen in the water or in the atmosphere. The invention further provides an inexpensive media with high surface area for adsorptive fixation and reductive treatment that yields higher than anticipated reaction kinetics utilizing only low concentrations of iron in the media.

US Patent:

6520259, Feb 18, 2003

Filed:

Oct 11, 2001

Appl. No.:

09/975204

Inventors:

Jeremy Mathew Rasmussen - Lapeer MI 48446
James R. Burns - Haslett MI 48540
David Lawrence Schroder - Sylvania OH 43560
Daniel William Oberle - Sylvania OH 43560

International Classification:

E21B 4300

US Classification:

166310, 166 54, 166 881, 1661056, 1663344

Abstract:

The present invention presents an improved method and apparatus for liquid entrainment by a two-phase flow system. The present invention provides an apparatus that recovers liquids by entrainment without experiencing deadhead conditions, choking or dry recovery due to fluctuations in the elevation of the liquid level. The apparatus provides self-regulated two-phase recovery of gas and liquid by construction design, thus eliminating the need for manual adjustments or electronically controlled devices. The enhanced venturi effects of the present invention enhance liquid lift while maintaining the gas recovery point above the liquid at all times to eliminate deadhead conditions.