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Benjamin R Bikson, 7814 Dusty Miller Rd, Falmouth, MA 02540

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297 Nahanton St, Newton Center, MA 02459    617-4674919   

Newton, MA   

Falmouth, MA   

18 Gibbs St, Brookline, MA 02446    617-5665921   

Norwood, MA   

Cambridge, MA   

Millboro, VA   

Boxborough, MA   

297 Nahanton St, Newton Center, MA 02459   

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Benjamin R Bikson

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Position: Protective Service Occupations

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Degree: Bachelor's degree or higher

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Renewables & Environment

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Benjamin Bikson Photo 1

President At Porogen

Location:
Greater Boston Area
Industry:
Renewables & Environment
Experience:
PoroGen (Renewables & Environment industry): President,  (-) 

Publications & IP owners

Us Patents

Production And Use Of Improved Polyimide Separation Membranes

US Patent:
6497747, Dec 24, 2002
Filed:
Sep 24, 1999
Appl. No.:
09/404724
Inventors:
Yong Ding - Norwood MA
Benjamin Bikson - Brookline MA
Joyce Katz Nelson - Lexington MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
B01D 5322
US Classification:
95 45, 95 51, 95 53, 95 54, 96 10, 96 13, 96 14
Abstract:
A process for preparing polyimide gas separation membranes is disclosed. The process involves preparing polyamic acid salt membrane precursors that are converted into polyimide membranes by mild thermal or chemical treatments. The gas separation processes that utilize these polyimide membranes are further disclosed.

Method Of Preparing Composite Gas Separation Membranes From Perfluoropolymers

US Patent:
6540813, Apr 1, 2003
Filed:
Apr 20, 2001
Appl. No.:
09/839920
Inventors:
Joyce Katz Nelson - Lexington MA
Benjamin Bikson - Brookline MA
James Timothy Macheras - Quincy MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
B01D 5322
US Classification:
95 53, 95 45, 95 54, 96 10, 96 13, 96 14, 55524, 55DIG 5
Abstract:
A method for fabricating a composite membrane includes coating a substrate, such as, for example, an asymmetrical porous hollow fiber substrate, with a solution which includes a perfluorinated polymer and a perfluorinated solvent. Prior to coating, the substrate is impregnated with an impregnation fluid which is immiscible with the perfluorinated solvent. The method of the invention further includes removing the perfluorinated solvent and the impregnation fluid. A composite membrane includes a porous asymmetric hollow fiber substrate having an outer surface coated with a perfluoropolymer coating. Separation devices which include composite membranes and methods of separating a fluid mixture into a fraction enriched in a first component and a fraction depleted in that component also are described.

Polyimide Amic Acid Salts And Polyimide Membranes Formed Therefrom

US Patent:
6716270, Apr 6, 2004
Filed:
Jan 23, 2003
Appl. No.:
10/350230
Inventors:
Yong Ding - Norwood MA
Benjamin Bikson - Brookline MA
Joyce Katz Nelson - Lexington MA
James Timothy Macheras - Quincy MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
B01D 5322
US Classification:
95 45, 95 47, 95 51, 95 53, 95 54, 96 10, 96 13, 96 14, 21050039
Abstract:
The invention relates to preparation and uses of novel polymeric materials, polyimide amic acid salts (PIAAS). The use of these materials for the fabrication of fluid separation membranes is further disclosed.

Gas Separation Using Membranes Formed From Blends Of Perfluorinated Polymers

US Patent:
6723152, Apr 20, 2004
Filed:
Jul 1, 2002
Appl. No.:
10/187124
Inventors:
Benjamin Bikson - Brookline MA
Yong Ding - Norwood MA
Johann Katz Leroux - Sharon MA
Joyce Katz Nelson - Lexington MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
B01D 5322
US Classification:
95 45, 95 54, 96 13, 96 14
Abstract:
A preferred gas separation membrane made from a blend of a copolymer of 2,2-bis(trifluoromethyl)-4,5-difluoro-1,3-dioxole (BDD) and tetrafluoroethylene (TFE) with a 2,2,4-trifluoro-5-trifluoromethoxy-1,3-dioxide based polymer is disclosed, the membrane exhibiting an advantageous combination of gas separation and permeation properties for a number of gas separation applications. In particular, the membrane formed from the blend of these polymers exhibits unexpectedly high gas separation factors for separation of volatile organic hydrocarbon vapors (VOC) from air, compared to the component polymers that form the blends. Fabrication of composite membranes formed from perfluoropolymer blends is further disclosed.

Hollow Fiber Membrane System Assembly With An Internal Reflux System

US Patent:
6740140, May 25, 2004
Filed:
Sep 7, 2001
Appl. No.:
09/947366
Inventors:
Salvatore Giglia - Norwood MA
Bradley Quinn Johnson - Lakeville MA
Benjamin Bikson - Brookline MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
B01D 5322
US Classification:
95 52, 95 45, 96 8, 96 10
Abstract:
The present invention provides a hollow fiber membrane gas separation assembly having an integral purge control aperture or purge reflux system which is internal to the hollow fiber apparatus. The assembly is particularly useful for separating water vapor from a gas stream.

Methods For The Preparation Of Polyesters, Poly(Ester Amide)S And Poly(Ester Imide)S And Uses Of The Materials Obtained Therefrom

US Patent:
6740728, May 25, 2004
Filed:
May 24, 2002
Appl. No.:
10/153703
Inventors:
Yong Ding - Norwood MA
Benjamin Bikson - Brookline MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
C08G 7500
US Classification:
528174, 528171, 528172, 528199, 528201, 528204, 528211, 528219, 528370, 528401, 528422, 524706, 524710, 524730
Abstract:
The present invention relates to methods for the preparation of polyesters, poly(ester amide)s and poly(ester imide)s. The materials obtained by the methods of present invention are useful as fluid separation membranes and as high performance materials.

Hollow Fiber Membrane Gas Separation Cartridge And Gas Purification Assembly

US Patent:
6755894, Jun 29, 2004
Filed:
May 24, 2002
Appl. No.:
10/153912
Inventors:
Benjamin Bikson - Brookline MA
Scott Andrew Bartholomew - Worcester MA
Salvatore Giglia - Norwood MA
Bradley Quinn Johnson - Lakeville MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
B01D 5322
US Classification:
95 52, 96 8, 96 10, 2103218
Abstract:
A hollow fiber membrane gas separation apparatus of a compact design suitable for separation and purification of gases is disclosed. The apparatus comprises an outer housing that consists of a detachable bowl and a head closure, and a removable hollow fiber membrane cartridge positioned therein. The cartridge contains several concentric separation zones and provides for efficient countercurrent flow configuration between the feed gas on the shell side and the permeate sweep gas on the lumen side of the hollow fiber membranes.

Integral Hollow Fiber Membrane Gas Dryer And Filtration Device

US Patent:
6776820, Aug 17, 2004
Filed:
Jul 10, 2001
Appl. No.:
09/900881
Inventors:
Benjamin Bikson - Brookline MA
Scott Andrew Bartholomew - Worcester MA
Salvatore Giglia - Norwood MA
Bradley Quinn Johnson - Lakeville MA
Assignee:
Praxair Technology, Inc. - Danbury CT
International Classification:
B01D 5322
US Classification:
95 52, 95273, 96 8
Abstract:
An integral hollow fiber membrane gas purification apparatus is disclosed. The apparatus comprises one or more filtration elements and a hollow fiber membrane cartridge placed coaxially in a common housing. In some embodiments, the filtration elements are omitted and the hollow fiber membrane cartridge is employed as a combined gas separation/filtration device. The apparatus of this invention is particularly useful for conditioning compressed air that includes the removal of both suspended matter and water vapor.

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