Duane J Mazur

US Patent:

6375825, Apr 23, 2002

Filed:

Oct 28, 1999

Appl. No.:

09/428738

Inventors:

Lloyd Ballard Mauldin - Cartersville GA
Charles Adams, Jr. - Cartersville GA
Donald R. Randolph - Cartersville GA
Duane J. Mazur - Amherst NY
J. David Genders - Marilla NY
Dennis M. Chai - East Amherst NY

Assignee:

Chemical Products Corporation - Cartersville GA

International Classification:

C25B 120

US Classification:

205508

Abstract:

A process for the continuous production of alkaline earth metal hydroxide by continuously providing an aqueous alkaline earth metal halide solution to the anode compartment and an aqueous alkaline earth metal hydroxide solution or water to the cathode compartment of an electrolytic cell in which an anode and a cathode are maintained in separate anode and cathode compartments, respectively, by a stable, hydrated, cation selective, hydraulically impermeable, electrically conductive membrane interposed between said anode and said cathode; electrolyzing the alkaline earth metal halide solution; and continuously removing alkaline earth metal hydroxide solution and hydrogen from the cathode compartment and halogen from the anode compartment. The membrane is a film of a fluorinated polymer with pendant side chains containing sulfonyl groups present as ion exchange sites and attached to carbon atoms which have at least one fluorine atom attached thereto. In another embodiment the membrane is a laminate of two such polymers differing in equivalent weight.

US Patent:

6495013, Dec 17, 2002

Filed:

Jul 10, 2001

Appl. No.:

09/901978

Inventors:

Duane J. Mazur - Amherst NY
J. David Genders - Marilla NY
Dan M. Hartsough - Clarence NY

Assignee:

The Electrosynthesis Company, Inc. - Lancaster NY

International Classification:

B01D 6144

US Classification:

204525, 204534, 204537, 204538

Abstract:

Bipolar membrane electrodialysis methods for salt splitting polyvalent metal salts, where the metal cation can form substantially insoluble precipitates in the presence of hydroxyl ions can now be used in recovering acid and base values from a salt streams without precipitates fouling cell operation and causing shutdown. The introduction of an acid to the chamber where metal hydroxides would form inhibits their development or neutralizes formed solids, allowing salt splitting to continue. Salt splitting methods of the invention performed with a three compartment bipolar electrodialysis cell are useful in producing concentrated and purified acid forms, such as 2-keto-L-gluconic acid, H(KLG), a key intermediate in the production of ascorbic acid.

US Patent:

6541228, Apr 1, 2003

Filed:

Nov 28, 2000

Appl. No.:

09/724443

Inventors:

J. David Genders - Marilla NY
Ram Gopal - Williamsville NY
Dan M. Hartsough - Clarence NY
Peter M. Kendall - Amherst NY
William J. Long - Charlottle NC
Duane J. Mazur - Amherst NY
Guillermo D. Zappi - Amherst NY

Assignee:

The Electrosynthesis Company, Inc. - Lancaster NY

International Classification:

B01D 1504

US Classification:

435126, 204518, 204522, 204530, 204536, 204537, 210638, 210641, 210654, 210659, 435136, 435137, 435138, 435139, 435146, 4351732

Abstract:

A process for purifying and concentrating a gluconic acid derivative, such as 2-keto-L-gulonic acid, comprising introducing a non-viable and/or acidified fermentation medium or an in-vitro reactor medium comprising at least the gluconic acid derivative and/or salt thereof to electrodialysis thereby purifying and concentrating the gluconic acid derivative.

US Patent:

20050224365, Oct 13, 2005

Filed:

Apr 12, 2005

Appl. No.:

11/104120

Inventors:

Duane Mazur - Amherst NY, US
Norman Weinberg - East Amherst NY, US
Lawrence Guilbault - Boxford MA, US
Arthur Achhing Chin - Cherry Hill NJ, US
Klaus Tomantschger - Mississauga, CA

International Classification:

C25B003/00

US Classification:

205546000

Abstract:

A method for producing borohydride by causing current to flow in an electrolytic cell between an anode and a cathode, wherein a solution of a boron-containing compound is in contact with the cathode, and wherein the cathode comprises a conductive material having activity as a high hydrogen overpotential electrode.

US Patent:

20060000713, Jan 5, 2006

Filed:

Jul 1, 2004

Appl. No.:

10/882601

Inventors:

Paul Carus - Peru IL, US
Duane Mazur - Amherst NY, US

Assignee:

Carus Corporation - Peru IL

International Classification:

B01D 61/46

US Classification:

204531000, 204634000

Abstract:

Novel electrochemical cell configurations comprise ion-exchange membranes in combination with at least one porous separator for use in salt splitting methods, including metathesis electrodialysis salt splitting. Methods include production of chemically different oxidizing agents from a first oxidizing agent feed, along with value added salt by-products without adversely affecting permselectivity of the ion-exchange membranes of the cell.

US Patent:

51064634, Apr 21, 1992

Filed:

Aug 15, 1988

Appl. No.:

7/232000

Inventors:

John D. Genders - Lancaster NY
Norman L. Weinberg - E. Amherst NY
Duane J. Mazur - Amherst NY

Assignee:

The Electrosynthesis Company, Inc. - East Amherst NY

International Classification:

C25B 300
C25B 302

US Classification:

204 72

Abstract:

Amino acid free bases are prepared electrochemically without production of intermediate acid salts. Amino acids having reducible disulfide linkages and at least one basic nitrogen group are reduced at a high surface area, noncontaminating cathode to provide a current density of at least 50 mA/cm. sup. 2, product yield of at least 90% and an operating current efficiency of at least 90%.

US Patent:

51103648, May 5, 1992

Filed:

Jul 27, 1989

Appl. No.:

7/385799

Inventors:

Duane J. Mazur - Amherst NY
Norman L. Weinberg - E. Amherst NY
Albert E. Abel - Columbus OH

Assignee:

A.L. Sandpiper Corporation - Columbus OH

International Classification:

C07C 748
C02F 170

US Classification:

134 2

Abstract:

Substrates polluted with toxic substances are treated in-situ with solvated electrons prepared chemically or electrochemically. The process is useful in treating porous and nonporous substrates, such as earth, clay, sand, soils, concrete, asphalt, wood, brick, block and other masonry surfaces, including liquids such dielectric fluids contaminated with halogenated hydrocarbons without the usual separation procedures to provide substrates suitable for recycle having

US Patent:

48350745, May 30, 1989

Filed:

Sep 25, 1987

Appl. No.:

7/101068

Inventors:

Mary-Elizabeth Bolster - Clarence NY
Duane J. Mazur - Amherst NY
Norman L. Weinberg - East Amherst NY

Assignee:

The Electrosynthesis Company, Inc. - East Amherst NY

International Classification:

H01M 402
H01M 486
H01B 104
B01J 2118

US Classification:

429 43

Abstract:

Elemental carbon with or without added oxygen functionality is chemically modified with covalently bonded nitrogen-containing groups to provide novel, high performance elemental carbons for electrochemical cells, including electrodes for energy consuming cells, and especially energy producing cells like lithium-oxyhalide high energy-density batteries, alkaline batteries, and the like.