John H Montgomery

US Patent:

H16314, Feb 4, 1997

Filed:

Oct 27, 1995

Appl. No.:

8/563086

Inventors:

John A. Montgomery - Reston VA
Jack D. Ayers - Oakton VA
Gregory Cowart - Alexandria VA

Assignee:

United States of America - Washington DC

International Classification:

H01Q 1700
H01Q 704

US Classification:

342 1

Abstract:

The present invention is a method for making radar chaff consisting of metal rings having varying diameters, using photolithographic processes. One aspect of the invention has the steps of: providing a metal foil having a thickness suitable for use in radar chaff; overcoating the metal foil with a photoresist, to form a layered structure; undercoating the metal foil with a removable backing; exposing the photoresist to a quantity of actinic radiation for chemically modifying the photoresist into a photoproduct suitable for subsequent development, where the actinic radiation is patterned into a series of concentric rings; developing the photoresist, to expose the underlying metal in a series of concentric rings; removing the exposed metal to form a series of concentric metal rings on the removable backing; and removing the removable backing. Another aspect of the invention is a metal chaff precursor, comprising: a removable backing, coated with a plurality of concentric metal foil rings.

US Patent:

42106397, Jul 1, 1980

Filed:

Aug 29, 1978

Appl. No.:

5/937704

Inventors:

Peter K. Chiang - Kensington MD
Guilio L. Cantoni - Bethesda MD
John P. Bader - Rockville MD
William M. Shannon - Birmingham AL
H. Jeanette Thomas - Birmingham AL
John A. Montgomery - Birmingham AL

Assignee:

The United States of America as represented by the Department of Health,
Education and Welfare - Washington DC

International Classification:

A61K 3170
C07H 1916
C07H 1700

US Classification:

424180

Abstract:

5'-Deoxy-5'-(isobutylthio)-3-deazaadenosine and a method for preparation of same. In the preparation, 3-deazaadenosine is utilized as a starting material and is chlorinated at the 5' position. Subsequently, the chloro group is converted to isobutylthio by reaction with isobutyl mercaptan in ethanol containing sodium methoxide giving the desired compound. A most preferred starting material, i. e. , 3-deazaadenosine, was prepared according to the method of Montgomery et al, J. Heterocyclic Chem. , 14:195 (1977). The key fusion of this process is 4,6-dichloroimidazo[4,5-c]pyridine with 1,2,3,5-tetra-O-acetyl-. beta. -D-ribofuranose, which, after removal of protective groups and reductive dechlorination of the chlorine at 6, gives 3-deazaadenosine. This new compound has good activity as an adenosylhomocysteine (AdoHcy) hydrolase inhibitor and has shown activity against Rous sarcoma virus (RSV) in chick embryo cells and Gross murine leukemia virus (Gross MLV) in mouse embryo cells, where the activity is as a non-competitive inhibitor of AdoHcy hydrolase showing A K. sub. i of 0. 4 mM.

US Patent:

43860931, May 31, 1983

Filed:

Sep 16, 1981

Appl. No.:

6/302557

Inventors:

Peter K. Chiang - Kensington MD
Giulio L. Cantoni - Bethesda MD
John A. Montgomery - Birmingham AL

Assignee:

The United States of America as represented by the Secretary of the
Department of Health and Human Services - Washington DC

International Classification:

A61K 31435
C07D47104

US Classification:

424256

Abstract:

(. +-. )3-Deazaaristeromycin, also known as (. +-. )-4-amino-1-[(1. alpha. , 2. beta. , 3. beta. , 4. alpha. )-2,3-dihydroxy-4-(hydroxymethyl)cyclopentyl]imidazo[4,5-c]pyridin e, utilized as a novel antiviral agent and inhibiting S-adenosylhomocysteine hydrolase in a pharmacological target in effective concentrations.

US Patent:

45842698, Apr 22, 1986

Filed:

Oct 31, 1983

Appl. No.:

6/547258

Inventors:

Patricia J. Vollmer - Olney MD
Jeffrey J. Schruben - Rockville MD
John P. Montgomery - Clarksburg MD

Assignee:

Genex Corporation - Rockville MD

International Classification:

C12P 1322
C12N 988
C12N 996
C12R 1645

US Classification:

435108

Abstract:

A method for the enzymatic conversion of t-cinnamic acid and ammonia to L-phenylalanine, using the catalyst, phenylalanine ammonia-lyase, wherein the stability and useful life of the enzyme are improved by conducting the conversion under substantially anaerobic, static conditions.

US Patent:

20200180245, Jun 11, 2020

Filed:

Dec 10, 2019

Appl. No.:

16/709700

Inventors:

- Arlington VA, US
John A. Montgomery - Washington DC, US

International Classification:

B29C 70/54
B29C 70/30
B29C 35/16

Abstract:

A method to improve thermal performance of vascular composites by using a two-phase working fluid for isothermalization includes the steps of: manufacturing a vascular composite structure optimized for a design point; manufacturing a thermal back end sized for the application; integrating the vascular composite into a fluid loop; and evacuating and filling the fluid loop with working fluid to an amount resulting in two-phase operation at the design point.