DONALD AUSTIN JOHNSON
Pilots at Elm St, Batavia, IL

6669904, Dec 30, 2003

Aug 1, 2001

09/920399

Shunong Yang - Naperville IL
Donald A. Johnson - Batavia IL
Robert L. Wetegrove - Winfield IL
George J. Collias - River Forest IL

Ondeo Nalco Company - Naperville IL

A61L 218

422 37, 422 7, 422 14, 423500, 25218636, 2521872, 210754, 162 70

Stabilized bromine solutions are prepared by combining a bromine source and a stabilizer to form a mixture, and then adding an oxidizer to the mixture.

7632412, Dec 15, 2009

Nov 3, 2006

11/556391

Donald A. Johnson - Batavia IL, US
Steven R. Hatch - Naperville IL, US
Arthur J. Kahaian - Chicago IL, US

Nalco Company - Naperville IL

C02F 1/42

210662, 210687, 210743, 210746

A method for controlling a cooling water tower comprising: providing a cooling tower system, which includes a recirculated evaporative cooling water stream, a source of make-up water, an evaporative cooling unit, a heat exchanger, a bleed off line, and a bleed-off valve which is in communication with said bleed-off line; providing a plurality of conduits through which said makeup water flows into said evaporative cooling water stream, wherein there is at least a first conduit that contains a weak acid cation ion exchange column and a second conduit that does not contain a weak acid ion exchange column, and wherein each conduit has at least one conduit valve; choosing a pH and a conductivity setpoint value and a deadband value above and below said setpoint value in said cooling tower system; measuring both the pH of said evaporative cooling water stream with one or more pH meters and conductivity of said evaporative cooling water stream with one or more conductivity meters; and implementing a response to said conductivity measurements and pH measurements is disclosed.

2009000, Jan 8, 2009

Jul 6, 2007

11/774169

Phillip E. Bureman - Olathe KS, US
Donald A. Johnson - Batavia IL, US
David A. Grattan - Bolingbrook IL, US

C05G 3/00, C05C 3/00, C05C 9/00

71 30, 71 27

A method of using trace amounts of certain compounds to reduce or inhibit corrosion on metal surfaces exposed to corrosive materials is disclosed. The compounds include hydroxlamines, acrylate polymers or copolymers, certain organic acids, tannic acid, carbohydrazide and its derivates and salts, and combinations of these compounds. The metal surfaces may include any ferrous metal piping or equipment surfaces, such as that used during storage, transport, and other processing of such materials. A corrosion-inhibited UAN solution having about 20 to about 50 percent by weight water and from less than 10 to about 1,000 ppm of one or more of the described corrosion inhibitors, and a pH from about 7 to about 8 is also disclosed.

7402263, Jul 22, 2008

Apr 25, 2005

11/113742

Craig W. Myers - Lisle IL, US
Steven R. Hatch - Naperville IL, US
Donald A. Johnson - Batavia IL, US

Nalco Company - Naperville IL

H01B 1/00, C09K 3/00, C23F 11/00, C05C 9/00, C05B 15/00

252500, 252387, 252394, 71 28, 71 29, 71 30

A trace amount of a tungstate is disclosed for inhibiting corrosion by nitrogen fertilizer solution, in particular, an ammonium nitrate fertilizer solution, (UAN) in contact with ferrous metal storage tanks, piping, and equipment surfaces. Tungstate added with a dispersant polymer is also effective for inhibiting corrosion.

4966711, Oct 30, 1990

Feb 27, 1989

7/315713

John E. Hoots - St. Charles IL
Rodney H. Banks - Naperville IL
Donald A. Johnson - Batavia IL

Nalco Chemical Company - Naperville IL

C02F 100

210697

Methods for utilizing transition metals as tracers in aqueous liquid systems are provided by this invention. Transition metals with low background levels in system waters are identified as preferred when soluble in said aqueous liquid systems. The transition metals show low levels of deposition on equipment scale and provide reliable information as to the process history of the liquid systems.

5085794, Feb 4, 1992

Apr 25, 1990

7/514444

James F. Kneller - LaGrange Park IL
Vytas Narutis - Riverside IL
Barbara E. Fair - Downers Grove IL
Donald A. Johnson - Batavia IL

Nalco Chemical Company - Naperville IL

C02F 510, C23F 1110

252 82

A phosphinate containing composition which has as its major ingredient more than 32 mole percent of a phosphinicosuccinic acid oligomer having the probable structural formula: ##STR1## M is H, Na, K, NH. sub. 4, or mixtures thereof; and m and n are either 0 or a small whole number with the proviso that either m or n is a small whole number and the sum of m plus n is greater than 2.

7968007, Jun 28, 2011

Jun 18, 2008

12/141512

Craig W. Myers - Lisle IL, US
Steven R. Hatch - Naperville IL, US
Donald A. Johnson - Batavia IL, US
Phillip E. Bureman - Olathe KS, US

Nalco Company - Naperville IL

H01B 1/00, C04B 9/02, C05C 9/00

252387, 106 1412, 106 1413, 106 1421, 71 28, 71 29, 71 30

A trace amount of a tungstate added together with an ortho-phosphate and/or phosphonite is disclosed for inhibiting corrosion by a nitrogen fertilizer solution. In particular, an ammonium nitrate fertilizer solution is in contact with ferrous metal storage tanks, piping, and equipment surfaces. Tungstate added with an iron stabilizer including a dispersant polymer is also effective for inhibiting corrosion.

5466297, Nov 14, 1995

Dec 4, 1992

7/985703

Walter H. Goodman - Lisle IL
Narasimba M. Rao - Naperville IL
Donald A. Johnson - Batavia IL

Nalco Chemical Company - Naperville IL

C23G 102, C02F 142

134 3

A method is described for removing ferrometal corrosion products from cooling water systems, which method recycles ferrous/ferric complexing agents and leads to low volume highly concentrated iron wastes for disposal. The method combines, preferably, the use of citric acid or citric acid-tannin complexing agents with erythorbic acid reducing agents to clean corroded surfaces followed by recovery of both complexing and reducing agents for recycle by contacting spent cleaning solution with strong acid cation exchange resins or chelating resins. The resins remove and retain iron species, releasing chelating and reducing agents to resin bed effluents. These are recycled. A concentrated iron waste stream is recovered by regenerating the resin beds with strong acids, preferably HCL, H. sub. 2 SO. sub. 4, and the like.

5589106, Dec 31, 1996

Feb 14, 1995

8/388546

Dennis P. Bakalik - Woodridge IL
Donald A. Johnson - Batavia IL
Bo Yang - Naperville IL
Frank F. Lu - Naperville IL

Nalco Chemical Company - Naperville IL

C23F 1118, C23F 11173

252387

The prevention of corrosion on the surfaces of metallic pipes, heat exchangers, and the like which are in contact with industrial cooling waters, and particularly industrial cooling waters containing low levels of hardness is controlled utilizing a corrosion inhibiting amount of a composition including an alkali metal silicate, a hydroxycarboxylic acid or its water soluble salts, an organophosphonate, and a water soluble polymer which acts as a dispersant. Superior corrosion inhibition is achieved using the compositions of this invention as corrosion inhibitors, particularly in cooling water systems employing mild steel metallurgy.

5415783, May 16, 1995

Dec 13, 1993

8/165689

Donald A. Johnson - Batavia IL
Richard J. Strittmatter - Batavia IL
Binaifer S. Khambatta - Orland Park IL

Nalco Chemical Company - Naperville IL

C02F 178

210699

A method for increasing the effectiveness of ozone as a treating agent for alkaline cooling tower waters. This is accomplished by reducing pH of the solutions in contactor loops which supply ozone to cooling tower waters with an acidic substance.