Geoffrey B Davies, Age 668 Great Pond Rd, Kingston, NH 03848

5849652, Dec 15, 1998

Sep 27, 1996

8/722524

Geoffrey Davies - Lexington MA
Tarek M. Abdel-Fattah - Revere MA
Kenneth J. Balkus - The Colony TX

Northeastern University - Boston MA

B01J 2964
B01J 2972

502 60

The invention features metal-containing catalysts including a crystalline microporous metal oxide structure encapsulating an amount of metal which reflects the amount of metal introduced into the metal oxide structure.

4632675, Dec 30, 1986

Aug 10, 1984

6/640012

Geoffrey Davies - Lexington MA
Ahmed El-Toukhy - Dorchester MA

Northeastern University - Boston MA

C10L 122

44 72

Coal liquid fractions to be used as fuels are stabilized against gum formation and viscosity increases during storage, permitting the fuel to be burned as is, without further expensive treatments to remove gums or gum-forming materials. Stabilization is accomplished by addition of cyclohexanol or other simple inexpensive secondary and tertiary alcohols, secondary and tertiary amines, and ketones to such coal liquids at levels of 5-25% by weight with respect to the coal liquid being treated. Cyclohexanol is a particularly effective and cost-efficient stabilizer. Other stabilizers are isopropanol, diphenylmethanol, tertiary butanol, dipropylamine, triethylamine, diphenylamine, ethylmethylketone, cyclohexanone, methylphenylketone, and benzophenone. Experimental data indicate that stabilization is achieved by breaking hydrogen bonds between phenols in the coal liquid, thereby preventing or retarding oxidative coupling.

4933003, Jun 12, 1990

Jul 18, 1989

7/382826

James V. Marzik - Nashua NH
Louis G. Carreiro - Westport MA
Geoffrey Davies - Boston MA

The United States of America as represented by the Secretary of the Army - Washington DC
Northeastern University - Boston MA

B22F 930

75362

A method for forming a single-phase, homogeneous and high surface area metal alloy by reducing a polyheterometallic complex at a low temperature in hydrogen-containing gas.

5456894, Oct 10, 1995

Oct 12, 1993

8/135289

Geoffrey Davies - Lexington MA
Nagwa El-Kady - Doha, EG
Ahmed El-Toukhy - Doha, EG

Northeastern University - Boston MA

C01B 25163
C01B 2516
C01B 2526
C01B 2537

423302

The invention provides metal-phosphorus-nitrogen polymer compounds and methods for their preparation at low temperatures using readily available starting materials. One group of compounds, metal-phosphazene polymers, are comprised of repeating units of [PN]. sub. 3 rings linked to form polymers through P--X--M--X--P bonds. The linking atoms X are either NH. sub. 2 or O, and M is a metal cation. Another group of the compounds have the generic formula M. sub. a (P. sub. 2 O. sub. 5). sub. b (NH. sub. 3). sub. c O. sub. d. eH. sub. 2 O. If the metal-phosphorus-nitrogen polymers are heated to a sufficiently high temperature to reduce the nitrogen/phosphorus ratio, additional novel solid metal phosphorus compounds of the invention are formed, many of which have a foamed, porous structure. The properties of the compounds of the invention can be varied by choice of metal and reaction conditions to create materials having useful conductive, magnetic, optical, catalytic, or ion-exchange properties.

5286469, Feb 15, 1994

Dec 17, 1991

7/809700

Geoffrey Davies - Lexington MA
Nagwa El-Kady - Doha, EG

Northeastern University - Boston MA

C01B 2500
C01B 2100

423302

The invention provides metal-phosphorus-nitrogen polymer compounds and methods for their preparation at low temperatures using readily available starting materials. One group of compounds, metal-phosphazene polymers, are comprised of repeating units of [PN]. sub. 3 rings linked to form polymers through P--X--M--X--P bonds. The linking atoms X are either NH. sub. 2 or O, and M is a metal cation. Another group of the compounds have the generic formula M. sub. a (P. sub. 2 O. sub. 5). sub. b (NH. sub. 3). sub. c O. sub. d. eH. sub. 2 O. If the metal-phosphorus-nitrogen polymers are heated to a sufficiently high temperature to reduce the nitrogen/phosphorus ratio, additional novel solid metal phosphorus compounds of the invention are formed, many of which have a foamed, porous structure. The properties of the compounds of the invention can be varied by choice of metal and reaction conditions to create materials having useful conductive, magnetic, optical, catalytic, or ion-exchange properties.