John W Priest

US Patent:

8034006, Oct 11, 2011

Filed:

Jun 15, 2007

Appl. No.:

11/764174

Inventors:

John W. Priest - Dallas TX, US
Carolyn L. Cason - Arlington TX, US
Mary E. Mancini - Plano TX, US
Kenneth George Morallee - Kent, GB
Helge Fossan - Stavanger, NO

Assignee:

Board of Regents, The University of Texas System - Austin TX
Laerdal Medical AS - Stavanger

International Classification:

A61H 31/00

US Classification:

601 41, 600587, 34053912

Abstract:

The present invention provides a CPR sensor that includes a thin and substantially flat flexible substrate having one or more sensor arrays, a power source, an output interface and a processor or analog circuit, all of which are disposed on the substantially flat flexible substrate. The substrate can be any shape (e. g. , rectangular, circular, a polygon, an irregular shape that is decorative) and made from a polymer, metal film or other suitable material. Note that the substrate can be rigid or semi-flexible instead of flexible. A protective layer may cover the sensor array, the power source, and the processor or analog circuit. Alternatively, a protective covering can be used to encapsulate the device. The one or more sensor arrays measure one or more of the following compressions characteristics: compression depth, compression force, compression frequency and compression acceleration.

US Patent:

8404005, Mar 26, 2013

Filed:

Sep 10, 2009

Appl. No.:

12/556857

Inventors:

Brian H. Dennis - Arlington TX, US
Richard E. Billo - Colleyville TX, US
Christopher R. Oliver - Commerce Township MI, US
John W. Priest - Dallas TX, US
Elinor Kolesar - Ft. Worth TX, US

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

C10L 1/18
C11C 3/04

US Classification:

44308, 44307, 554169, 554167, 554170

Abstract:

In a method and system to produce biodiesel using an improved catalytic transesterification process, a first reactant and a second reactant are dispersed to form a laminar slug flow pattern within a microchannel of a microreactor, the first reactant and the second reactant being immiscible. The first reactant and the second reactant are mixed, thereby triggering a reaction between them to produce the biodiesel and glycerol, the mixing being convection-enhanced by shear stress induced circulation occurring within each slug of the reactants. The reaction takes place under a pressure that is less than 5 psi and under a temperature that is less than 70 degrees Celsius. Separation of the glycerol from the biodiesel occurs simultaneously with the mixing. Several microreactors are coupled in parallel to improve throughput of the biodiesel.

US Patent:

55605435, Oct 1, 1996

Filed:

Sep 19, 1994

Appl. No.:

8/308811

Inventors:

Charles V. Smith - Pantego TX
John W. Priest - Dallas TX
Patrick N. DuBois - Argyle TX

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

B05B 108

US Classification:

2391022

Abstract:

Apparatus and methods for making uniformly-sized and predictably-spaced droplets from high-temperature liquids. Liquid droplet generators having electromechanical driving elements are coupled to a power supply to apply pulsed excitation forces through a wall of a delivery tube to a high-temperature liquid, e. g. , a liquid metal, epoxy, or polymer. The excitation forces generated by the driver induce capillary vibrations in the liquid within the delivery tube. Liquid jet streams having capillary vibrations when exiting an orifice break up into groups of substantially uniformly-sized liquid droplets shortly after leaving the orifice. Droplets may be produced in a uniformly-spaced series, or individually on demand in response to a single burst of force from the driving element. A heat source is also thermally coupled to the delivery tube to maintain the liquid in a high-temperature state. Embodiments using heat-sensitive elements thermally insulate those elements from the wall of the heated delivery tube and may also actively cool the elements by one or more heat exchangers.

US Patent:

58109889, Sep 22, 1998

Filed:

Oct 1, 1996

Appl. No.:

8/722410

Inventors:

Charles Vincent Smith - Cedar Hill TX
John William Priest - Dallas TX
Patrick Neil DuBois - Argyle TX

Assignee:

Board of Regents, University of Texas System - Austin TX

International Classification:

B05B 100

US Classification:

204666

Abstract:

Apparatus and methods for making uniformly-sized and predictably-spaced droplets or solid microspheres from high-temperature or other liquids. Liquid droplet generators having electromechanical driving elements are coupled to a power supply to apply pulsed excitation forces through a wall of a delivery tube to a liquid, e. g. , a liquid metal, epoxy, or polymer. The excitation forces generated by the driver induce capillary vibrations in the liquid within the delivery tube, which breaks the stream into substantially uniformly-sized liquid droplets shortly after leaving the orifice. Droplets may be produced in a uniformly-spaced series, or individually on demand in response to a single burst of force from the driving element. If solid microspheres are desired, the trajectory of the emitted droplets is determined to permit the solidification prior to catching or collecting the microspheres. Solidification of the spherical drops may be accomplished by freezing, evaporation, or chemical reaction due to heat transfer, material transfer, or chemical reaction as the droplets traverse a controlled environment chamber.

US Patent:

20160040072, Feb 11, 2016

Filed:

Jan 12, 2014

Appl. No.:

14/776423

Inventors:

- Austin TX, US
Brian H. Dennis - Arlington TX, US
Richard E. Billo - Irving TX, US
John W. Priest - Dallas TX, US

International Classification:

C10G 1/06
C10G 3/00
C10G 1/08

Abstract:

Methods for the conversion of lignites, subbituminous coals and other carbonaceous feedstocks into synthetic oils, including oils with properties similar to light weight sweet crude oil using a solvent derived from hydrogenating oil produced by pyrolyzing lignite are set forth herein. Such methods may be conducted, for example, under mild operating conditions with a low cost stoichiometric co-reagent and/or a disposable conversion agent.