Russell Marshall Macdonald Deceased8865 E Baseline Rd, Mesa, AZ 85209

6410672, Jun 25, 2002

Jul 28, 1999

09/362591

Russell J. MacDonald - Wilmington MA
James A. Lech - Somerville MA

Ionics, Incorporated - Watertown MA

C08F 1228

526310, 526290, 526293, 5263031, 5263072, 5263078, 5263181, 526326, 526346, 521 25, 521 38

The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an ethylenic tertiary amine monomer, an alkylating agent having a boiling point temperature of at least about 100Â C. , and a cross-linking agent in the presence of a polymerizing agent for a time and at a temperature sufficient to form the polymer. The alkylating agent and the cross-linking agent may be the same compound, a cross-linking alkylating agent. The polymers may be produced in the presence of solvents and/or in the presence of diluting monomers which are incorporated into the polymers.

7087654, Aug 8, 2006

Jun 24, 2002

10/178418

Russell J. MacDonald - Wilmington MA, US
James A. Lech - Somerville MA, US

Ionics, Incorporated - Watertown MA

C08J 5/20

521 27, 521 38, 526290, 526293, 5263031, 5263072, 5263078, 526310, 5263181, 526326, 526346

The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an ethylenic tertiary amine monomer, an alkylating agent having a boiling point temperature of at least about 100 C. , and a cross-linking agent in the presence of a polymerizing agent for a time and at a temperature sufficient to form the polymer. The alkylating agent and the cross-linking agent may be the same compound, a cross-linking alkylating agent. The polymers may be produced in the presence of solvents and/or in the presence of diluting monomers which are incorporated into the polymers.

7306709, Dec 11, 2007

Dec 1, 2005

11/292319

Vladimir Grebenyuk - Woburn MA, US
Oleg Grebenyuk - Ashland MA, US
Keith J. Sims - Wayland MA, US
William W. Carson - Hopkington MA, US
Russell J. MacDonald - Wilmington MA, US
Li Zhang - Belmont MA, US

GE Osmonics, Inc. - Minnetonka MN

B01D 61/48

204632

EDI apparatus for demineralizing a liquid flow is assembled in a housing having a cylindrical shape, and includes two metal electrodes, and one or more leafs, each leaf comprising a pair of selectively ion-permeable membranes arranged parallel to each other and spaced apart by spacing elements that allow liquid to flow in the interstitial space between membranes, thus forming an arrangement of dilute and concentrate cells in a desired flow configuration. Spacing elements between membranes, as well as between leaves, can be formed of inert polymer material, ion exchange beads, ion exchange fibers, a combination of two or more these elements, or a porous media incorporating one or more of such elements as an intrinsic part. An inner or central electrode and an outer or perimeter electrode establish a generally uniform and radially-oriented electrical or ionic current between the inner and the outer electrodes, across the helical flow spaces defined by the membrane/spacer windings. One or both electrodes may include a pocket, and the adjacent flow cells lie parallel to the electrode and free of shadowing and field inhomogeneity around a full circumference of the electrode.

7591933, Sep 22, 2009

Dec 1, 2005

11/291526

Vladimir Grebenyuk - Woburn MA, US
Oleg Grebenyuk - Ashland MA, US
Keith J. Sims - Wayland MA, US
William W. Carson - Hopkington MA, US
Russell J. MacDonald - Wilmington MA, US
Li Zhang - Belmont MA, US

GE Ionics, Inc. - Watertown MA

C25B 9/00
C02F 1/00

204260, 204600

Some embodiments of the invention relate to an electrodeionization device that includes comprising a generally cylindrical housing. The cylindrical housing includes a cylindrical inner core and an inner electrode that extends around the inner core. The cylindrical housing includes a leaf arranged as a spiral winding about the inner electrode and an outer electrode that extends about the spiral winding. Active treatment cells are defined by spaces within the spiral winding and by interleaf spaces thereof. One or more sealing bands extend between membranes of the spiral winding to define fluid flow.

7968663, Jun 28, 2011

Dec 18, 2007

11/958653

Russell James MacDonald - Wilmington MA, US
Jack Peters - Stoneham MA, US

General Electric Company - Schenectady NY

C08F 120/58

526304

A novel anion exchange polymer is provided. A method of making the anion exchange polymer includes reacting a tertiary amine, an acid inhibitor and a polyepoxide to form a quaternary ammonium monomer and polymerizing the quaternary ammonium monomer in the presence of a catalyst. The exchange polymer is prepared without using alkyl halides and can be used to make improved ion exchange materials that are chemically resistant and non-fouling.

8138291, Mar 20, 2012

May 23, 2011

13/113139

Russell James MacDonald - Wilmington MA, US
Jack Peters - Stoneham MA, US

General Electric Company - Schenectady NY

C08F 120/58

526304

A novel anion exchange polymer is provided. A method of making the anion exchange polymer includes reacting a tertiary amine, an acid inhibitor and a polyepoxide to form a quaternary ammonium monomer and polymerizing the quaternary ammonium monomer in the presence of a catalyst. The exchange polymer is prepared without using alkyl halides and can be used to make improved ion exchange materials that are chemically resistant and non-fouling.

2006011, Jun 8, 2006

Dec 2, 2005

11/293441

Russell MacDonald - Wilmington MA, US
Zhang Li - Belmont MA, US

B01D 61/42
B01D 59/42

204536000, 204518000, 204520000, 204627000

A linear exchange element with functionalized polymer on a core of rope, twine or yarn has well defined physical structure and may function as a spacer or be formed into free-standing exchange elements. A screen is fabricated from such strands or strips, with a pattern of mixed, sequential or other exchange types for enhanced operation in a capture device or in an electrodialysis device. Strands possess tensile strength, enabling deionization devices of new architecture, such as fiber-wound cartridges and other packing arrangements. Bodies made of the strands may operate as walls to perform the function of an exchange membrane or bed, or may operate as spacers positioned between membranes to enhance ion capture and transport, and their properties simplify handling and regeneration. Electroseparation devices advantageously employ the open spacers to better treat food, fermentation product or other streams where high conductivity, suspended solids and fouling would otherwise present problems. “Woven” mats may be arranged so that strands of one type in a first layer possess at least some points of contact with strands of opposite type in an adjacent layer, and different strand diameter and mesh pitch or dimension may be employed for treating fluids of different viscosity or concentration to optimize treatment throughput and removal rate, or to minimize fouling or flow obstruction and otherwise extend the range of treatment parameters.

2006016, Jul 27, 2006

Dec 1, 2005

11/291528

Vladimir Grebenyuk - Woburn MA, US
Oleg Grebenyuk - Ashland MA, US
Keith Sims - Wayland MA, US
William Carson - Hopkington MA, US
Russell MacDonald - Wilmington MA, US
Li Zhang - Belmont MA, US

C25C 7/02

204260000

EDI apparatus for demineralizing a liquid flow is assembled in a housing having a cylindrical shape, and includes two metal electrodes, and one or more leafs, each leaf comprising a pair of selectively ion-permeable membranes arranged parallel to each other and spaced apart by spacing elements that allow liquid to flow in the interstitial space between membranes, thus forming an arrangement of dilute and concentrate cells in a desired flow configuration. Spacing elements between membranes, as well as between leaves, can be formed of inert polymer material, ion exchange beads, ion exchange fibers, a combination of two or more these elements, or a porous media incorporating one or more of such elements as an intrinsic part. An inner or central electrode and an outer or perimeter electrode establish a generally uniform and radially-oriented electrical or ionic current between the inner and the outer electrodes, across the helical flow spaces defined by the membrane/spacer windings. One or both electrodes may include a pocket, and the adjacent flow cells lie parallel to the electrode and free of shadowing and field inhomogeneity around a full circumference of the electrode. Flow paths within the helical cells are defined by barrier seals, which may form a path-lengthening maze, while unfilled cell regions may disperse or collect flow within a cell and define pressure gradients promote directional flows. Impermeable barriers between membranes further prevent the feed and concentrate flows from mixing. In various embodiments, seals along or between portions of the flow path may define a multi-stage device, may define separate feed and/or concentrate flows for different stages, and/or may direct the feed and concentrate flows along preferred directions which may be co-current, counter-current or cross-current with respect to each other within the apparatus.