GARY C GANZI
Engineering in Lexington, MA

4747929, May 31, 1988

Oct 1, 1986

6/913897

Kitty K. Siu - Dracut MA
Anil D. Jha - Lexington MA
Gary C. Ganzi - Lexington MA

Millipore Corporation - Bedford MA

B01D 1302

204301

An electrodeionization apparatus is provided for removing ions from liquids. Liquid to be purified is passed through depleting compartments containing mixed anion and cation exchange resin beads while a second liquid is passed through concentrating compartments free of ion exchange resin beads. Ions, under influence of an electrical potential, pass from the depleting compartments into the concentrating compartments through ion permeable membranes. A spacer for each depleting compartment is provided which retains the beads within the compartment, promotes even flow through the compartment and prevents plugging of the compartment inlet by the beads and external foulants.

5868915, Feb 9, 1999

Sep 23, 1996

8/717781

Gary C. Ganzi - Lexington MA
Felice DiMascio - Nashua NH
Anthony J. Giuffrida - North Andover MA
Frederick Wilkins - Pepperill MA
Paul Springthorpe - Duston, GB

United States Filter Corporation - Palm Desert CA

B01D 6144

204524

An improved electrodeionization apparatus and method are provided. The electrodeionization apparatus includes electrolyte compartments, ion-concentrating, and ion-depleting compartments, having electroactive media therein. The electroactive media can be induced to have a reversible change in its chemical or electrical properties upon imposition of an external electrical field or the presence of an electrically charged substance. The change in chemical or electrical properties of the media results in a desired change in the transport or chemical properties of the media. The incorporation of the improved electroactive media also provides for an improved, and more reliable electrodeionization process in applications requiring chemical and temperature resistance media, where localized pH shifts would be harmful to the product being deionized, under temperature and chemical conditions of the liquid to be processed, or under circumstances where traditional media would tend to foul.

6312577, Nov 6, 2001

Apr 14, 2000

9/549011

Gary C. Ganzi - Lexington MA
Frederick Wilkins - Pepperell MA
Anthony J. Giuffrida - North Andover MA

United State Filter Corporation - Palm Desert CA

B01D 6148

204524

A continuous electrodeionization apparatus and method. The continuous electrodeionization apparatus and method provide improved removal of weakly ionized ions, particularly silica. The apparatus and method involves using macroporous ion exchange resins that are both highly crosslinked and have a high water content. In preferred embodiments, the ion exchange resin beads also have a substantially uniform diameter.

5316637, May 31, 1994

Aug 28, 1992

7/938329

Gary C. Ganzi - Lexington MA
Frederick Wilkins - Pepperill MA
Anthony J. Giuffrida - Andover MA
Christopher Griffin - Merrimack MA

IP Holding Company - Wilmington DE

B01D 6144

2041824

An electrodeionization apparatus is provided for removing ions from liquids. The apparatus is particularly well-adapted for the removal of large, heavily hydrated, highly charged or weakly ionized molecules or complexes from feed water. Such removal is achieved by substituting, in at least one section of the apparatus, ion exchange membranes and/or resins having lower crosslinking and/or lower selectivity, for the ion exchange membranes commonly used in electrodeionization systems. Methods for reducing the electrical resistance across the membrane also are provided.

4512892, Apr 23, 1985

Feb 14, 1980

6/121561

Gary C. Ganzi - Lexington MA
Charles T. Paul - Westford MA

Millipore Corporation - Bedford MA

B01D 2706

2104932

An improved method and structure for sealing the ends of a tubular filter element is described. The method comprises providing a strip on non-porous film along the edge of a sheet of microporous filter material, the strip being joined to the filter material fluid-tight at its outer portion but forming a free flap on its inner portion, forming the element with the strip at one end and over the upstream side of the filter material, embedding the end in liquid sealer to a depth terminating over the flap portion of the strip, and solidifying the sealer. A similar procedure is described for seaming the axially-extending side edges of a cylindrical element.

5292422, Mar 8, 1994

Sep 15, 1992

7/945151

Li-Shiang Liang - Berlin MA
Gary C. Ganzi - Lexington MA
Frederick Wilkins - Pepperill MA

IP Holding Company - Wilmington DE

B01D 6300

204301

A novel electrodeionization apparatus is disclosed. The apparatus includes a plurality of disk-shaped concentrating and diluting cell pairs which provide an apparatus which minimizes losses of ion exchange membrane efficiency due to membrane sealing to compartment spacers. In addition, a novel method for filling individual cells or cell pairs with ion exchange resins is disclosed.

4392958, Jul 12, 1983

Mar 23, 1981

6/246803

Gary C. Ganzi - Lexington MA
Charles T. Paul - Westford MA

Millipore Corporation - Bedford MA

B01D 2706

2104932

An improved method and structure for sealing the ends of a tubular filter element is described. The method comprises providing a strip of non-porous film along the edge of a sheet of microporous filter material, the strip being joined to the filter material fluid-tight at its outer portion but forming a free flap on its inner portion, forming the element with the strip at one end and over the upstream side of the filter material, embedding the end in liquid sealer to a depth terminating over the flap portion of the strip, and solidifying the sealer. A similar procedure is described for seaming the axially-extending side edges of a cyclindrical element.

4430226, Feb 7, 1984

Mar 9, 1981

6/241792

Ramesh S. Hegde - Chelmsford MA
Gary C. Ganzi - Lexington MA

Millipore Corporation - Bedford MA

C02F 142, C02F 104, C02F 144

210638

A water treatment cartridge and method for producing ultrapure water is described. The cartridge comprises a container having therein a particulate admixture of activated carbon and mixed bed ion exchange resins. A source of water, preferably pretreated, is passed through the container, preferably following treatment by one or more cartridges containing mixed bed ion exchange resins. The carbon in the admixed cartridge removes residual organic contamination from the water and the resins remove ionic contamination from the carbon, without re-introducing organic material to the water.

8182693, May 22, 2012

Dec 16, 2009

12/639548

Frederick C. Wilkins - Pepperell MA, US
Anil Jha - San Francisco CA, US
Gary C. Ganzi - Lexington MA, US

Siemens Industry, Inc. - Alpharetta GA

B01D 61/00, B01D 61/42, B01D 63/00, B01D 17/06, B01J 49/00

210652, 210653, 2102572, 2101952, 210663, 204518, 204255, 204259, 204626

A method and apparatus for purifying water are provided. A feed water such as seawater can be fed to a filter such as a microporous or nanofiltration membrane to produce a permeate that can, in turn, be fed to an electrodeionization system to produce fresh water.

8277627, Oct 2, 2012

Sep 20, 2006

11/524078

Gary C. Ganzi - Lexington MA, US
Evgeniya Freydina - Acton MA, US
Anil D. Jha - Lincoln MA, US
Li-Shiang Liang - Harvard MA, US
Frederick C. Wilkins - Pepperell MA, US

Siemens Industry, Inc. - Alpharetta GA

B01D 61/44, C02F 1/469

204520, 204264

An electrically-driven separation apparatus can be utilized to desalinate seawater and/or brackish water to provide irrigation water having a desired sodium adsorption ratio (SAR).