Laura Sue Kajita

US Patent:

56704356, Sep 23, 1997

Filed:

Oct 25, 1994

Appl. No.:

8/329091

Inventors:

Laura Kajita - Palatine IL

Assignee:

AMCOL International Corporation - Arlington Heights IL

International Classification:

B01J 2116

US Classification:

502 81

Abstract:

A chemical composition and method for treating oil-contaminated waste waters, and, more particularly, waste waters in the form of oily emulsions that may also contain dissolved metal ions, and/or metal solids, to sorb (adsorb and/or absorb) the contaminants between and within platelets of sodium bentonite clay particles, and calcium bentonite clay particles, and the contaminants are encapsulated or trapped in a matrix of calcium bentonite platelets and sodium bentonite platelets that are flocculated by a flocculant, such as a cationic polymer, so that leaching of contaminants into the waste water, or subsequently into a liquid portion of a landfill, is unexpectedly reduced.

US Patent:

54761425, Dec 19, 1995

Filed:

Dec 27, 1994

Appl. No.:

8/364091

Inventors:

Laura Kajita - Palatine IL

Assignee:

American Colloid Company - Arlington Heights IL

International Classification:

E21B 3314
E02D 312

US Classification:

166294

Abstract:

A flexible grout composition and method of disposing the composition in position, in contact with an earthen formation, such as a coating on a trench wall, or within a bore hole, for example to cement a conduit within the bore hole to prevent fluid loss, for sealing and grouting well casings, plugging abandoned wells, and waterproofing earthen structures, particularly in environments where the grout composition is in contact with contaminated water. The flexible grout composition includes a water-swellable clay, such as sodium bentonite; an optional solid particulate filler, such as an essentially nonswellable bentonite clay, such as calcium bentonite, herein defined as a bentonite clay having calcium as the predominant exchangeable cation; a water-soluble polymer; and an optional dispersing agent, such as sodium acid pyrophosphate (SAPP).

US Patent:

20190225541, Jul 25, 2019

Filed:

Jan 15, 2019

Appl. No.:

16/247965

Inventors:

- Chicago IL, US
Laura Kajita - Chicago IL, US

International Classification:

C04B 14/10
C04B 28/04
C04B 24/42
C04B 20/00

Abstract:

The present invention involves a granular product to remove oil and grease from oily waste water; specifically targeting produced/flow-back water generated in the offshore oilfield industry. This granular product may be loaded into either filter media canisters or bulk filtration vessels and used onsite to filter the water. This invention may also be used as a pre-treatment step to other polishing filter systems.

US Patent:

20160145162, May 26, 2016

Filed:

Nov 24, 2015

Appl. No.:

14/950851

Inventors:

- Chicago IL, US
Laura Kajita - Chicago IL, US

International Classification:

C05F 11/02
C05G 3/00

Abstract:

The present invention relates to a mineral or organic carrier capable of binding a source for humates and/or fulvic acid; and a pH adjuster or modifier, methods for manufacturing the same as well as agricultural and pesticidal uses of the same.

US Patent:

20140141481, May 22, 2014

Filed:

Oct 9, 2013

Appl. No.:

14/049932

Inventors:

- Chicago IL, US
Marc Herpfer - Chicago IL, US
Laura Kajita - Chicago IL, US
Yasmith Bernal - Chicago IL, US

Assignee:

Oil-Dri Corporation of America - Chicago IL

International Classification:

C12P 7/06

US Classification:

435161, 44451

Abstract:

The present methods involves methods of improving ethanol production which may comprise the addition of clay during ethanol production.