Joshua D Cook

US Patent:

6408849, Jun 25, 2002

Filed:

Jun 18, 1999

Appl. No.:

09/336060

Inventors:

Jeffrey J. Spiegelman - La Jolla CA
Daniel Alvarez, Jr. - San Diego CA
Peter K. Shogren - San Diego CA
Joshua T. Cook - San Diego CA

Assignee:

Aeronex, Inc. - San Diego CA

International Classification:

A62B 2302

US Classification:

12820527, 12820512, 12820528, 128898

Abstract:

A method is disclosed for providing a pure gas for use medical procedures in which the gas is contaminated with other gases during the procedure, and then separating the contaminants and recovering and reusing the decontaminated gas. The method is most advantageously used in medical imaging processes, such as magnetic resonance image (MRI), where hyperpolarized image enhancing noble gases, notably He or Xe , are used for image enhancement in brain and lung imaging, and in which the contaminants are normally the exhalant gases from the imaged patient. The contaminated gas is passed through a series of drying and purification steps to remove the exhalant gases and separate the gas. The purified gas is then recovered and stored for reuse. This system prevents the loss of significant amounts of the image enhancing gases, which is important since key gases such as He and Xe are rare and expensive, and (especially He ) permanently lost once vented. Recovery of medical process gases such as those including isotopes of carbon, fluorine or phosphorus is also contemplated.

US Patent:

6361696, Mar 26, 2002

Filed:

Jan 19, 2000

Appl. No.:

09/487637

Inventors:

Jeffrey J. Spiegelman - La Jolla CA
Daniel Alvarez, Jr. - San Diego CA
Peter K. Shogren - San Diego CA
Joshua T. Cook - San Diego CA

Assignee:

Aeronex, Inc. - San Diego CA

International Classification:

B01D 1504

US Classification:

210662, 95 8, 95143, 210677, 210690

Abstract:

A method for the decontamination of fluid (liquid or supercritical) carbon dioxide fluid, especially of hydrocarbon contaminants, down to 100 ppb concentration are described. The critical component is a high silica zeolite, preferably a high silica Y-type zeolite, ZSM-5 or a high silica mordenite, which in a variety of physical forms is capable of decontaminating such fluid CO to 100 ppb, 10-50 ppb, or Ë1 ppb, without being detrimentally affected by the supercritical operating environment. The high silica zeolite may be produced by the removal of alumina from a natural or synthetic zeolite while retaining the desirable zeolite structure, to a silica:alumina ratio of from 20-2000:1. Preferably the zeolite is disposed in separate quantities in at least two vessels, which operate alternately. A portion of the purified product from the operating vessel is directed to the other vessel and there used to remove accumulated contaminants from that vessels zeolite. The process thus provides self-regeneration, in that regeneration of one vessel occurs while the other vessel decontaminates contaminated fluid carbon dioxide, so that use of the two can be alternated for substantially continual production of purified fluid carbon dioxide.

US Patent:

20200368668, Nov 26, 2020

Filed:

May 20, 2020

Appl. No.:

16/879444

Inventors:

- Billerica MA, US
Rocky D. GIPSON - San Marcos CA, US
Sarah VOGT - Grover Beach CA, US
Joshua T. COOK - San Diego CA, US
Matthew BROWNING - San Luis Obispo CA, US
Marco HOLZNER - San Luis Obispo CA, US

International Classification:

B01D 53/04
B01D 45/12
B01D 50/00

Abstract:

Described are methods, devices, and systems useful for removing gaseous ammonia from a gas mixture at a pressure in an ambient pressure range by allowing the ammonia to adsorb onto a solid adsorbent, as well as related systems and methods.

US Patent:

20200368669, Nov 26, 2020

Filed:

May 20, 2020

Appl. No.:

16/879514

Inventors:

- Billerica MA, US
Rocky D. GIPSON - San Marcos CA, US
Sarah VOGT - Grover Beach CA, US
Joshua T. COOK - San Diego CA, US
Matthew BROWNING - San Luis Obispo CA, US
Marco HOLZNER - San Luis Obispo CA, US

International Classification:

B01D 53/04
B01J 20/28
B01J 20/20
B01J 20/10
B01J 20/08

Abstract:

Described are methods, devices, and systems useful for adsorbing organometallic vapor onto solid adsorbent material to remove the organometallic vapor from a gas mixture that contains the organometallic vapor and other vapor, particulate materials, or both.

US Patent:

20170333841, Nov 23, 2017

Filed:

Jun 5, 2017

Appl. No.:

15/614409

Inventors:

- Billerica MA, US
Thomas Richard Gaffney - Carlsbad CA, US
Joshua T. Cook - Encinitas CA, US
Daimhin Paul Murphy - San Diego CA, US
Stenio da Costa Pereira - San Diego CA, US

International Classification:

B01D 53/86
B01D 53/28
B01D 53/75
C01B 3/56
C01B 21/04
C01B 23/00
C01B 3/58
B01J 29/14
B01D 53/26

Abstract:

The invention relates to a gas purifier that removes moisture and oxygen from inert gases and reducing gases, for example, at sub-atmospheric pressures. The purifier can remove part per million levels of moisture in a gas stream to less than 100 parts per trillion by volume, and has a low pressure drop and a sharp breakthrough curve.

US Patent:

20150056113, Feb 26, 2015

Filed:

Feb 8, 2013

Appl. No.:

14/377656

Inventors:

- Billerica MA, US
Thomas Richard Gaffney - Carlsbad CA, US
Joshua T. Cook - Encinitas CA, US
Peter K. Shogren - Chula Vista CA, US
Daimhin Paul Murphy - San Diego CA, US
Stenio da Costa Pereira - San Diego CA, US

Assignee:

Entegris, Inc. - Billerica MA

International Classification:

B01D 53/86
B01J 29/14

US Classification:

423210, 422169, 502 74

Abstract:

The invention relates to a gas purifier that removes moisture and oxygen from inert gases and reducing gases, for example, at sub-atmospheric pressures. The purifier can remove part per million levels of moisture in a gas stream to less than 100 parts per trillion by volume, and has a low pressure drop and a sharp breakthrough curve.