Howard Sylvia Stephens

US Patent:

49295829, May 29, 1990

Filed:

Apr 9, 1986

Appl. No.:

6/849913

Inventors:

Robert G. Dosch - Albuquerque NM
Howard P. Stephens - Albuquerque NM

Assignee:

The United States of American as Represented by The United States
Department of Energy - Washington DC

International Classification:

B01J 2106
B01J 2320

US Classification:

502 11

Abstract:

A catalytic material of improved activity which comprises a hydrous, alkali metal or alkaline earth metal or quaternary ammonium titanate, zirconate, niobate, or tantalate, in which the metal or ammonium cations have been exchange with a catalytically effective quantity of a catalyst metal, and which has been subsequently treated with a solution of a Bronsted acid.

US Patent:

45114552, Apr 16, 1985

Filed:

Apr 10, 1984

Appl. No.:

6/597590

Inventors:

Robert G. Dosch - Albuquerque NM
Howard P. Stephens - Albuquerque NM
Frances V. Stohl - Albuquerque NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

C10G 106
C10G 4702
C10G 4500
C10G 2300

US Classification:

208 10

Abstract:

In a process which is catalyzed by a catalyst comprising an active metal on a carrier, said metal being active as a catalyst for the process, an improvement is provided wherein the catalyst is a hydrous, alkali metal or alkaline earth metal titanate, zirconate, niobate or tantalate wherein alkali or alkaline earth metal cations have been exchanged with a catalytically effective amount of cations of said metal.

US Patent:

49662538, Oct 30, 1990

Filed:

Aug 23, 1989

Appl. No.:

7/397239

Inventors:

Howard Stephens - Sugar Hill GA
Roy W. Clark - Panama City FL

International Classification:

F01N 708

US Classification:

181227

Abstract:

A muffler device for reducing the noise level of an internal combustion engine as exhaust gases and sound waves produced by the operation of the engine are expelled into the atmosphere is disclosed. The device is placed in the exhaust system, being disposed within the exhaust pipe or pipes as close to the exhaust manifold as possible. The device has a sound chamber for attenuating sound waves entering the chamber by deflection of the sound waves back toward their source and a venturi for drawing exhaust gases through the device and expelling them to the atmosphere.

US Patent:

54610222, Oct 24, 1995

Filed:

Dec 31, 1992

Appl. No.:

7/998997

Inventors:

Robert G. Dosch - Albuquerque NM
Howard P. Stephens - Albuquerque NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

B01J 37025
B01J 3720
B01J 2106
B01J 2302

US Classification:

502242

Abstract:

Thin film (