Donald J Stookey, Age 841571 Treherne Ct, Wildwood, MO 63017

2013004, Feb 21, 2013

Aug 14, 2012

13/585040

Sudipto Majumdar - Newark DE, US
Kenneth J. Pennisi - Bear DE, US
Donald J. Stookey - Chesterfield MO, US

CMS TECHNOLOGIES HOLDINGS INC. - Newport DE

B01D 53/22

95 47, 96 9

A system for providing nitrogen enriched air (NEA) from ambient air uses at least two gas separation membranes that are selectively gas permeable for oxygen and nitrogen. The oxygen/nitrogen selectivity and oxygen permeance of two of the membranes are different such that (1) the selectivity of first membrane is less than the second membrane and the oxygen permeance of first membrane is greater than the second membrane, or (2) the selectivity of first membrane is greater than the second membrane and the oxygen permeance of first membrane is less than the second membrane. The system is very compact, is energy efficient, and highly effective for generating NEA. It is ideally suited for mobile, remote and specialized end use applications, such as automotive vehicles, marine vessels, off-shore platform fuel storage and especially for supplying NEA to blanket ullage of onboard aircraft fuel storage tanks.

4218358, Aug 19, 1980

Apr 10, 1978

5/894788

Arthur A. Armstrong - Cary NC
Gerd R. Baur - Decatur AL
Charles N. Carpenter - St. Louis MO
Edwin W. Folk - Manchester MO
Donald J. Stookey - Raleigh NC
Robert L. Voges - Muscatine IA

Monsanto Company - Decatur AL

C08K 517
C08K 541

260 326N

The method of recovering unreacted mono-olefinic monomers from an acrylonitrile polymerization slurry containing 30 to 50 weight percent of polymer solids and 70 to 50 weight percent of unreacted monomers wherein the slurry is first diluted with a solvent for the polymer and then fed in series through first and second treatment zones, with each of the treatment zones having a first stage for mixing the slurry with a solvent in vapor form to vaporize some of the unreacted monomers from the slurry and form a polymer solution and a second stage for separating monomer vapors from the liquid polymer solution. Fresh solvent, in vapor form and at an elevated temperature is supplied to the mixing stage of the second treatment zone and the vaporized solvent and unreacted monomers from the separation stage of the second treatment zone are fed to the mixing stage of the first treatment zone. The preferred ratio of solvent to slurry being fed to the mixing stages is 0. 8 to 1. 2. The polymer solution leaving the separation stage of the second treatment zone has a very low content of unreacted monomers.

4687578, Aug 18, 1987

Dec 12, 1985

6/807928

Donald J. Stookey - Creve Coeur MO

Monsanto Company - St. Louis MO

G01D 1300

2103211

Fluid separation membranes and modules containing the separation membranes are disclosed wherein the membranes have preselected portions having lower selectivity to the feed fluid mixture; thus permitting the fluid feed mixtures to permeate the membranes in controlled amounts for purposes of sweeping selected permeate fluid away from the non-feed membrane surface.

5779897, Jul 14, 1998

Nov 8, 1996

8/748481

Dilip Gurudath Kalthod - St. Louis MO
Donald Joseph Stookey - Creve Coeur MO

Permea, Inc. - St. Louis MO

B01D 6128
B01D 6302

2103218

The present invention provides a fluid separation module and a process for utilizing the module containing a bundle of hollow fiber membranes and randomly dispersed within the bundle of fibers are filaments having an outer diameter from about 60 to about 3000 microns. The hollow fibers have an outer diameter from about 100 to about 1000 microns. The filaments are present in number from 0. 5 to 5 filaments per fiber. Preferably, the filaments are placed among the fibers during manufacturing of the fibers and/or bundle. The presence of the filaments enhances the performance of the fluid separation module.

4671875, Jun 9, 1987

May 2, 1986

6/858761

Donald J. Stookey - Creve Coeur MO

Monsanto Company - St. Louis MO

B01D 1300

2103211

A fluid separation module made up of a cylindrical shell having an outlet end and an enlarged inlet end. A bundle of hollow fiber membranes positioned in the shell extend through a cast tube sheet positioned in the enlarged inlet end of the shell. A flexible, imperforate sleeve is positioned in the shell surrounding the bundle of hollow fiber membranes, with one end of the sleeve being secured to the fiber bundle adjacent to the tube sheet and the other end of the sleeve being secured to the inner surface of the cylindrical shell at the enlarged end at the end thereof to leave a retroflexed, intermediate portion of the sleeve extending down the shell between the shell and the bundle of hollow fiber membranes. A fluid entering the inlet end of the shell inflates the flexible sleeve to occupy all free space between the fiber bundle and the shell and thereby force all of the fluid to pass through the bundle of hollow fiber membranes.

5215554, Jun 1, 1993

May 11, 1992

7/880930

Paul W. Kramer - Ellisville MO
Milton K. Murphy - Clayton MO
Donald J. Stookey - Creve Coeur MO
Jay M. S. Henis - St. Louis MO
Erwin R. Stedronsky - Richmond Heights MO

Permea, Inc. - St. Louis MO

B01D 5322

55 16

Glassy polymeric gas separation membranes are chemically modified throughout the thickness thereof. Such membranes manifest selectivity for a pair of gases which is greater than the intrinsic selectivity of the glassy polymeric material and which is greater than the equilibrium intrinsic selectivity of the chemically modified glassy polymeric material.

6180168, Jan 30, 2001

Feb 1, 1999

9/240994

Donald Joseph Stookey - Creve Coeur MO
Paul William Kramer - Ellisville MO

Air Products and Chemicals, Inc. - Allentown PA

B05D 118

427235

An internally swept membrane separation device is manufactured by applying a coating layer to an otherwise non-selective membrane in a controlled manner. A coating material is introduced into one end of a vertically positioned membrane separation device to flood the device to a controlled depth, thereby coating a predetermined portion of the non-selective membrane.