Michael M May

US Patent:

7767066, Aug 3, 2010

Filed:

Feb 22, 2005

Appl. No.:

11/063201

Inventors:

Michael A. May - Dayton OH, US
John E. Kuo - Dayton OH, US

International Classification:

C25B 9/00

US Classification:

204242, 204271, 204272, 2042751

Abstract:

An electrochemical reactor and process for electrolyzing a substance to change at least a portion of the substance from a first state to a second state. The reactor comprises a tubular body having a first end portion defining an opening and a second end portion defining an electrolysis chamber. The electrolysis chamber includes a well adapted to hold the substance and at least two electrodes for electrolyzing the substance in the well. The volume of the well is less than about 3 milliliters. The reactor further comprises a coupling for releasably and sealingly connecting the reactor body to an auxiliary device body. The coupling is adapted to provide a vacuum tight seal between the reactor body and the auxiliary device and to allow the reactor body to rotate about an axis of rotation independent of the auxiliary device while the reactor body is sealingly connected to the auxiliary device.

US Patent:

7794674, Sep 14, 2010

Filed:

May 31, 2007

Appl. No.:

11/756457

Inventors:

Michael May - Miamisburg OH, US

Assignee:

Sigma-Aldrich Co. - St. Louis MO

International Classification:

B01D 7/00

US Classification:

422244, 23294 R, 117200

Abstract:

A consolidated vacuum sublimation module (VSM) can comprise an upper body portion, a middle body portion, a lower body portion, a bushing, and a seal. A vapor director cartridge can be loaded with a crude material and manually inserted into a cartridge-holding member of the lower body portion. Assembly of the middle and upper body portions form a structural unit that can compressively and sealably connect to the lower body portion. During sublimation, heat is effectively transferred to the lower body portion that contains the crude material. A substantial fraction of the middle body portion is conically tapered about a central longitudinal axis to promote desublimation. The middle body portion is a unitary structure that consolidates valving, cooling, and desublimation functions. Following completion of an operational cycle, the vacuum sublimation module is inspected for sublimate presence, then valve-isolated, suitably cooled, detached, opened to a preferred gaseous atmosphere, disassembled, and manipulated for solids recovery.

US Patent:

8636881, Jan 28, 2014

Filed:

Jul 12, 2010

Appl. No.:

12/834192

Inventors:

Michael A. May - Dayton OH, US

International Classification:

C25B 9/00
C25B 1/00

US Classification:

2042751, 204193, 204194, 204242, 205334

Abstract:

A process for electrolyzing a material to change at least a portion of the material from a first chemical state to a second chemical state includes placing a known quantity of a first substance into either a mixing chamber or an electrolysis chamber of an integrated electrochemical reactor, placing a known quantity of a second substance into the other chamber free of the first substance; sealing an opening to isolate an internal volume within the reactor; rotating the reactor to form a mixture, rotating the reactor again such that the mixture is transferred to the electrolysis chamber; electrolyzing the mixture in the electrolysis chamber to change at least a portion of the mixture from the first chemical state to the second chemical state; and analyzing the first substance, or analyzing the second substance, or analyzing the first chemical state, or analyzing the second chemical state, or any analytical combinations thereof.

US Patent:

20070284523, Dec 13, 2007

Filed:

Jun 9, 2006

Appl. No.:

11/423317

Inventors:

Michael May - Dayton OH, US
Michael Gray - Dayton OH, US

Assignee:

Sigma-Aldrich Co. - St. Louis MO

International Classification:

B01D 59/44

US Classification:

250288

Abstract:

A novel apparatus and process for isolating a nitrogen fraction representative of the nitrogen contained in a specimen of a condensed phase nitrogenous organic composition. In the process the nitrogen fraction is isolated in the form of a dinitrogen gas that may be introduced into a mass spectrometer for determining the proportion of the nitrogen isotope content of the composition that is constituted by N.

US Patent:

20080035840, Feb 14, 2008

Filed:

Jun 1, 2007

Appl. No.:

11/756865

Inventors:

Michael May - Dayton OH, US
Michael Gray - Dayton OH, US

Assignee:

SIGMA-ALDRICH CO. - St. Louis MO

International Classification:

B01D 59/44

US Classification:

250282

Abstract:

A process for isolating a carbon fraction representative of the carbon contained in a specimen of a condensed phase carbonaceous composition. The carbon fraction is isolated in the form of a carbon oxide gas that may be introduced into a mass spectrometer for determining the proportion of the carbon isotope content of the composition that is constituted by C. A novel apparatus is provided which is useful in conducting the process.