Allan H Johnston

US Patent:

49733940, Nov 27, 1990

Filed:

Sep 2, 1988

Appl. No.:

7/241110

Inventors:

Pepi Ross - Berkeley CA
Allan J. Johnston - Palo Alto CA
Amrit K. Judd - Belmont CA

Assignee:

SRI International - Menlo Park CA

International Classification:

G01N 27327

US Classification:

204403

Abstract:

The present invention provides a stabilized potassium ion-selective membrane comprising lysine-substituted valinomycin covalently bound to a polymeric substrate. The membrane of the invention exhibits improved stability and is used either on ISEs or on solid-state coated wire or semiconductor devices.

US Patent:

51300311, Jul 14, 1992

Filed:

Nov 1, 1990

Appl. No.:

7/608997

Inventors:

Allan J. Johnston - Palo Alto CA

Assignee:

SRI International - Menlo Park CA

International Classification:

C02F 130
C02F 136

US Classification:

210748

Abstract:

A process for efficiently removing halogenated organic compounds from contaminated aqueous liquids is described which comprises contacting the contaminated liquid with a photocatalyst while simultaneously exposing the contaminated liquid to both acoustic energy and light energy to efficiently decompose the halogenated organic compounds.

US Patent:

51279541, Jul 7, 1992

Filed:

Dec 4, 1990

Appl. No.:

7/621690

Inventors:

Allan Johnston - Palo Alto CA
Dean Mason - Kirkland, CA
Darren F. Lawless - Montreal, CA
Terrence E. Peel - Hudson Heights, CA

Assignee:

Domtar Inc. - Montreal

International Classification:

C04B 1448

US Classification:

106644

Abstract:

The corrosion inhibiting systems comprise at least one of the following: sodium fluorophosphate, and a water soluble salt of phosphonic acid derivatives having the general formula R. sub. n R. sub. 1 N(CH. sub. 2 PO. sub. 3 H. sub. 2). sub. 2-n wherein R. sub. n and R. sub. 1 are each independently selected from a member selected from the group consisting of alkyl, aminoalkyl and N-hydroxyalkyl and n is an integer selected from 1 and 0. The methods comprise laying on a surface a system as defined above. The invention also discloses deicers, paints and other corrosion inhibitors in numerous carriers. Products containing at least residual amounts of a system as defined above are also disclosed.

US Patent:

50715798, Dec 10, 1991

Filed:

Dec 12, 1988

Appl. No.:

7/282641

Inventors:

Allan Johnston - Palo Alto CA
Dean Mason - Kirkland, CA
Darren F. Lawless - Montreal, CA
Terrence E. Peel - Hudson Heights, CA

Assignee:

Domtar Inc. - Montreal

International Classification:

C09K 318

US Classification:

252 70

Abstract:

The corrosion inhibiting systems comprise at least one of the following: sodium fluorophosphate, and a water soluble salt of phosphonic acid derivatives having the general formula R. sub. n R. sub. 1 N(CH. sub. 2 PO. sub. 3 H. sub. 2). sub. 2-n wherein R. sub. n and R. sub. 1 are each independently selected from a member selected from the group consisting of alkyl, aminoalkyl and N-hydroxyalkyl and n is an integer selected from 1 and 0. The methods comprise laying on a surface a system as defined above. The invention also discloses deicers, paints and other corrosion inhibitors in numerous carriers. Products containing at least residual amounts of a system as defined above are also disclosed.