Bryce D Anderson

US Patent:

49081349, Mar 13, 1990

Filed:

Feb 16, 1989

Appl. No.:

7/312020

Inventors:

Bryce P. Anderson - Carlsbad CA

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

B01D 1300

US Classification:

210651

Abstract:

Polyimide ultrafiltration membranes made using a single solvent and containing a pore forming agent have been produced and have been found to be useful for recovering dewaxing aid used in dewaxing process.

US Patent:

49633031, Oct 16, 1990

Filed:

Dec 29, 1989

Appl. No.:

7/458880

Inventors:

Bryce P. Anderson - Carlsbad CA

Assignee:

Exxon Research & Engineering Company - Florham Park NJ

International Classification:

B01D 1300

US Classification:

264 41

Abstract:

Polyimide ultrafiltration membranes made using a single solvent and containing a pore forming agent have been produced and have been found to be useful for recovering dewaxing aid used in dewaxing process.

US Patent:

53743571, Dec 20, 1994

Filed:

Mar 19, 1993

Appl. No.:

8/033860

Inventors:

Daniel L. Comstock - Escondido CA
Lee A. Durham - Oceanside CA
Mark A. Warren - Murrietta CA
Bryce P. Anderson - Carlsbad CA

Assignee:

D. W. Walker & Associates - San Marcos CA

International Classification:

C02F 128
C02F 154

US Classification:

210666

Abstract:

Colloidal matter is removed from a fluid flow by first adsorbing a coagulant onto the surface of a finely divided filter media, and thereafter passing a colloid-containing fluid through the filter media. The adsorbing of coagulant is accomplished with the filter off-line, and it is returned on-line for filtering of the fluid. After the coagulant is adsorbed onto the filter media, it is not necessary to continue feeding coagulant during on-line operation, as the adsorbed coagulant captures the colloidal matter in the fluid and retains it on the surface of the filter media. The captured colloidal matter is removed during back washing of the filter media.