Stuart J Goldstein

US Patent:

20080235189, Sep 25, 2008

Filed:

Sep 14, 2007

Appl. No.:

11/855851

Inventors:

Drew Rayman - Pleasantville NY, US
Brad Alperin - Brooklyn NY, US
Timothy Driscoll - New York NY, US
Stuart Goldstein - Millwood NY, US
David Levin - New York NY, US
Benjamin Simon - New York NY, US

International Classification:

G06F 17/30

US Classification:

707 3, 707E17108

Abstract:

A method and system of searching for information on a network includes receiving a search query from a user by a search system, processing the search query by a profile engine of the search system, providing a listing of search results, including personas who know about the search query, based on profiles and posts of the personas, where the personas are users of the search system, and facilitating further interaction with the listing of personas and tags for related content.

US Patent:

43484875, Sep 7, 1982

Filed:

Nov 2, 1981

Appl. No.:

6/317358

Inventors:

Stuart S. Goldstein - Kinnelon NJ
William J. Calvin - Convent Station NJ
Harry A. Marshall - Madison NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

C07C 2706
C07C 3104

US Classification:

518704

Abstract:

Methanol is produced by gasifying a carbonaceous feed material with steam in the presence of a carbon-alkali metal catalyst and added hydrogen and carbon monoxide at a temperature between about 1000. degree. F. and about 1500. degree. F. and at a pressure in excess of about 100 psia to produce a raw product gas comprising methane, steam, carbon dioxide, carbon monoxide, hydrogen and hydrogen sulfide; withdrawing the raw product gas from the gasifier and treating it for the removal of steam, particulates, hydrogen sulfide and carbon dioxide to produce a treated gas containing primarily carbon monoxide, hydrogen and methane; separating the treated gas into a methane-rich gas stream and a gas stream containing primarily carbon monoxide and hydrogen; passing the gas stream containing primarily carbon monoxide and hydrogen to a methanol synthesis reactor where the carbon monoxide is reacted with the hydrogen in the presence of a methanol synthesis catalyst to form methanol; recovering methanol product from the effluent exiting the methanol synthesis reactor thereby leaving a gas comprised of carbon monoxide, hydrogen, methane and carbon dioxide; and passing a portion of this gas to a steam reforming furnace wherein at least a portion of the methane is reacted with steam to produce hydrogen and carbon monoxide which is then passed from the steam reforming furnace into the gasifier. Preferably, at least a portion of the methane-rich gas produced in the separation step is used as fuel for the steam reforming furnace.

US Patent:

43484867, Sep 7, 1982

Filed:

Aug 27, 1981

Appl. No.:

6/296713

Inventors:

William J. Calvin - Convent Station NJ
Stuart S. Goldstein - Kinnelon NJ
Harry A. Marshall - Madison NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

C07C 2706
C07L 3104

US Classification:

518704

Abstract:

Methanol is produced by gasifying a carbonaceous feed material with steam in the presence of a carbon-alkali metal catalyst and added hydrogen and carbon monoxide at a temperature between about 1000. degree. F. and about 1500. degree. F. and at a pressure in excess of about 100 psia to produce a raw product gas comprising methane, steam, carbon dioxide, carbon monoxide, hydrogen and hydrogen sulfide; withdrawing the raw product gas from the gasifier and treating it for the removal of steam, particulates, hydrogen sulfide and carbon dioxide to produce a treated gas containing primarily carbon monoxide, hydrogen and methane; separating the treated gas into a methane-rich gas stream and a gas stream containing primarily carbon monoxide and hydrogen; passing the methane-rich gas stream to a steam reforming furnace wherein a portion of the methane is reacted with steam to produce hydrogen and carbon monoxide which is then passed from the steam reforming furnace into the gasifier; passing the gas stream containing primarily carbon monoxide and hydrogen to a methanol synthesis reactor where the carbon monoxide is reacted with the hydrogen in the presence of a methanol synthesis catalyst to form methanol; recovering methanol product from the effluent exiting the methanol synthesis reactor thereby leaving a gas comprised of carbon monoxide, hydrogen, methane and carbon dioxide; and recycling at least a portion of this gas to the separation step of the process.