RICHARD Q CALLAHAN, MSPA, PA-C
Medical Practice at Colchester Ave, Burlington, VT
License number
Vermont 055-0030786
Category
Nursing
Type
Surgical
License number
Vermont 055-0030786
Category
Nursing
Type
Medical
Address
Address
111 Colchester Ave, Burlington, VT 05401
Phone
(802) 847-4570
(802) 847-3364 (Fax)
(802) 847-3364 (Fax)
Professional information
Richard Q Callahan, Burlington VT - MSPA
Specialties:
Physician Assistant (PA), Surgical Assistance
Address:
111 Colchester Ave, Burlington 05401
(802) 847-4570 (Phone), (802) 847-3364 (Fax)
(802) 847-4570 (Phone), (802) 847-3364 (Fax)
Languages:
English
Hospitals:
111 Colchester Ave, Burlington 05401
Fletcher Allen Health Care
111 Colchester Ave, Burlington 05401
Fletcher Allen Health Care
111 Colchester Ave, Burlington 05401
Owner, Enerfex, Inc.
Position:
Owner at Enerfex, Inc.
Location:
Burlington, Vermont Area
Industry:
Design
Work:
Enerfex, Inc.
-
Owner
Education:
Syracuse University 1961 - 1965
Richard Quigley Callahan, Burlington VT
Specialties:
Physician Assistant
Address:
111 Colchester Ave, Burlington, VT 05401
Multiple Stage Semi-Permeable Membrane Process And Apparatus For Gas Separation
US Patent:
5873928, Feb 23, 1999
Filed:
Dec 23, 1996
Appl. No.:
8/773287
Inventors:
Richard A. Callahan - Burlington VT
Assignee:
Enerfex, Inc. - Burlington VT
International Classification:
B01D 5322
US Classification:
95 45
Abstract:
A membrane process and apparatus are described for the production of a desired very high purity permeate gas by use of a multiple stage membrane process wherein in a primary stage a process feed gas mixture is provided to a primary membrane separator unit comprising a membrane having a relatively high intrinsic permeability to provide an intermediate permeate gas and a retentate gas, and providing the intermediate permeate gas in a secondary stage to a secondary membrane separator unit comprising a membrane having a relatively low intrinsic permeability, to produce therefrom a very high purity permeate gas product.
Multiple Stage Semi-Permeable Membrane Process And Apparatus For Gas Separation
US Patent:
5482539, Jan 9, 1996
Filed:
Oct 11, 1994
Appl. No.:
8/320273
Inventors:
Richard A. Callahan - Burlington VT
Assignee:
Enerfex, Inc. - Burlington VT
International Classification:
B01D 5322
US Classification:
95 51
Abstract:
A membrane process and apparatus are described for the production of a desired very high purity permeate gas by use of a multiple stage membrane process wherein in a primary stage a process feed gas mixture is provided to a primary membrane separator unit comprising a membrane having a relatively high intrinsic permeability to provide an intermediate permeate gas and a retentate gas, and providing the intermediate permeate gas in a secondary stage to a secondary membrane separator unit comprising a membrane having a relatively low intrinsic permeability, to produce therefrom a very high purity permeate gas product.