Surjit M Singh

US Patent:

51105020, May 5, 1992

Filed:

Aug 22, 1988

Appl. No.:

7/234911

Inventors:

Surjit Singh - Williamsville NY

Assignee:

SCIPAR, Inc. - Williamsville NY

International Classification:

B01D 1702
C09K 318

US Classification:

252319

Abstract:

A solution for suppressing the formation of contrails from the exhaust of an engine including by weight between about 0. 01% to 2. 5% of the non-corrosive surfactant, between about 1% and 8% water, and between about 85% and 99% ethylene glycol. Another solution may include by weight a monohydric, dihydric or polyhydric alcohol in an amount of between about 85% and 99% and the non-corrosive surfactant in an amount of between about 0. 01% and 8%. Still another solution may include an inorganic nucleating or hygroscopic salt, such as ammonium iodide, ammonium fluoride, silver iodide or calcium chloride in monohydric, dihydric or polyhydric alcohols and surfactant mixtures. Yet another solution may include an inorganic salt in monohydric, dihydric or polyhydric alcohols.

US Patent:

47667257, Aug 30, 1988

Filed:

Dec 24, 1985

Appl. No.:

6/813098

Inventors:

Surjit Singh - Williamsville NY

Assignee:

Scipar, Inc. - Williamsville NY

International Classification:

F02K 304
C09K 318
B01D 702

US Classification:

60204

Abstract:

A method of suppressing the formation of contrails from the exhaust of an engine including the steps of providing a solution of a non-corrosive surfactant in a combined carrier and nucleating agent selected from the group of water soluble monohydric, dihydric, trihydric or other polyhydric alcohols, forming the solution into a vapor, and injecting the solution into the exhaust of the engine. The solution may include by weight between about 0. 01% to 2. 5% of the non-corrosive surfactant, between about 1% and 8% water, and between about 85% and 99% ethylene glycol. Another solution may include by weight a monohydric, dihydric or polyhydric alcohol in an amount of between about 85% and 99% and the non-corrosive surfactant in an amount of between about 0. 01% and 8%. Still another solution may include an inorganic nucleating or hygroscopic salt, such as ammonium iodide, ammonium fluoride, silver iodide or calcium chloride in monohydric, dihydric or polyhydric alcohols and surfactant mixtures.

US Patent:

50053558, Apr 9, 1991

Filed:

Aug 24, 1988

Appl. No.:

7/235670

Inventors:

Surjit Singh - Williamsville NY

Assignee:

Scipar, Inc. - Williamsville NY

International Classification:

F02K 304
C09K 318
B01D 702

US Classification:

60204

Abstract:

A method of suppressing the formation of contrails from the exhaust of an engine operating in cold temperatures including the steps of providing a combined nucleating agent and freeze-point depressant selected from the group of water soluble monohydric, dihydric, trihydric or other polyhydric alcohols, or mixtures thereof, forming the solution into a vapor, and injecting the solution into the exhaust of the engine. The solution may include a non-corrosive surfactant. Another solution may include an organic or an inorganic nucleating agent, or mixtures thereof, in monohydric, dihydric or polyhydric alcohols, or mixtures thereof, and in addition may contain one or more surfactants.