Patents by Inventor Lawrence Stern
Lawrence Stern has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7399894Abstract: A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface to volume ratio of about 80 to less than 200 inch?1.Type: GrantFiled: March 24, 2005Date of Patent: July 15, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit B. Dandekar, Michael N M N Hryniszak, David Lawrence Stern
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Patent number: 6888037Abstract: A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface to volume ratio of about 80 to less than 200 inch?1.Type: GrantFiled: December 13, 2002Date of Patent: May 3, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit B. Dandekar, Michael Hryniszak, David Lawrence Stern
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Patent number: 6781025Abstract: The present invention provides a process for regenerating a spent aromatics alkylation or transalkylation catalyst comprising a molecular sieve by contacting the spent catalyst with an oxygen-containing gas at a temperature of about 120 to about 600° C. and then contacting the catalyst with an aqueous medium, such as an ammonium nitrate solution, an ammonium carbonate solution or an acetic acid solution.Type: GrantFiled: July 11, 2001Date of Patent: August 24, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit B Dandekar, Michael Hryniszak, David Lawrence Stern, Jeffrey Scott Beck
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Patent number: 6659301Abstract: A universal bottle that interfits into a plurality of different housings for liquid vaporization devices. Two of the current commercial devices have specially constructed bottles that are not interchangeable, that is, the bottle intended for use with one of the commercial devices cannot be used with the other device and vice versa. The present bottle is dimensioned so as to interfit into both of the commercial devices and has a neck having an opening and two sets of opposite external surfaces that are dimensioned so that in one orientation, the bottle will fit into one of the commercial devices, and, by rotating the bottle a predetermined amount to another orientation, the bottle can be operatively inserted into the other of the commercial devices. In each instance, a locking system on the bottle cooperates with the housing of the commercial device to retain the bottle in its operative position.Type: GrantFiled: April 8, 2002Date of Patent: December 9, 2003Assignee: Waldwick Plastics Inc.Inventors: Robert Terrence Fellows, Alfred G. Prior, Manfred Alois Riegg, Jeffrey Lawrence Stern
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Publication number: 20030189022Abstract: A universal bottle that interfits into a plurality of different housings for liquid vaporization devices. Two of the current commercial devices have specially constructed bottles that are not interchangeable, that is, the bottle intended for use with one of the commercial devices cannot be used with the other device and vice versa. The present bottle is dimensioned so as to interfit into both of the commercial devices and has a neck having an opening and two sets of opposite external surfaces that are dimensioned so that in one orientation, the bottle will fit into one of the commercial devices, and, by rotating the bottle a predetermined amount to another orientation, the bottle can be operatively inserted into the other of the commercial devices. In each instance, a locking system on the bottle cooperates with the housing of the commercial device to retain the bottle in its operative position.Type: ApplicationFiled: April 8, 2002Publication date: October 9, 2003Inventors: Robert Terrence Fellows, Alfred G. Prior, Manfred Alois Riegg, Jeffrey Lawrence Stern
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Publication number: 20030092949Abstract: A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface to volume ratio of about 80 to less than 200 inch−1.Type: ApplicationFiled: December 13, 2002Publication date: May 15, 2003Inventors: Ajit B. Dandekar, Michael Hryniszak, David Lawrence Stern
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Publication number: 20020042548Abstract: A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface to volume ratio of about 80 to less than 200 inch−1.Type: ApplicationFiled: July 11, 2001Publication date: April 11, 2002Inventors: Ajit B. Dandekar, Michael Hryniszak, David Lawrence Stern
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Publication number: 20020038067Abstract: The present invention provides a process for regenerating a spent aromatics alkylation or transalkylation catalyst comprising a molecular sieve by contacting the spent catalyst with an oxygen-containing gas at a temperature of about 120 to about 600° C. and then contacting the catalyst with an aqueous medium, such as an ammonium nitrate solution, an ammonium carbonate solution or an acetic acid solution.Type: ApplicationFiled: July 11, 2001Publication date: March 28, 2002Inventors: Ajit B. Dandekar, Michael Hryniszak, David Lawrence Stern, Jeffrey Scott Beck
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Patent number: 6028238Abstract: A process is described for isomerizing a feed which contains ethylbenzene and xylene, which process comprises the steps of:(a) contacting the feed under ethylbenzene conversion conditions with a particulate first catalyst component which comprises a molecular sieve having a constraint index of 1-12, the particles of said first catalyst component having a surface to volume ratio of about 80 to less than 200 inch.sup.-1 and the contacting step converting ethylbenzene in the feed to form an ethylbenzene-depleted product; and then(b) contacting the ethylbenzene-depleted product under xylene isomerization conditions with a second catalyst component.Type: GrantFiled: April 14, 1998Date of Patent: February 22, 2000Assignee: Mobil Oil CorporationInventors: Jeffrey Scott Beck, Robert Andrew Crane, Jr., Jocelyn Anne Kowalski, Daria Nowakiwska Lissy, Mark Fischer Mathias, David Lawrence Stern
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Patent number: 4991693Abstract: A method of improving the landing of a hydraulic elevator car which responds to slowdown and leveling indicia associated with each floor of a building served by the car. The method, which utilizes signals which are already generated relative to the car traveling past slowdown and leveling indicia, provides an optimum deceleration time TOPT for the car to initiate deceleration and arrive at a leveling zone of a target floor, defined by leveling indicia. The method further delays the initiation of deceleration of the car, after the car reaches slowdown indicia for the target floor, by a predetermined time delay Td. The method determines the actual time TACT for the car to travel between slowdown and leveling indicia for the target floor, and then changes Td, if necessary, in a direction which tends to optimize Td, when TACT - Td is not equal to TOPT.Type: GrantFiled: February 16, 1989Date of Patent: February 12, 1991Assignee: Inventio AGInventors: Lawrence Stern, Jeffrey W. Blain
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Patent number: 4900311Abstract: A hypodermic syringe has a needle guard of elliptical cross section which is releasable by compressing the needle guard along its major axis, and, which can be moved between an extended and a retracted position when released. Optionally, a compression spring is provided for urging the needle guard towards an extended position.Type: GrantFiled: December 6, 1988Date of Patent: February 13, 1990Inventors: Lawrence Stern, Thomas Stern
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Patent number: 4848577Abstract: A double-faced blister pack and frame assembly for packaging and displaying an article of merchandise. The article is sandwiched between a pair of superposed, transparent plastic sheets whose central regions are molded to generally conform to the opposite faces of the article, the four superposed margins of the sheets each defining a flange. The frame is formed of a cardboard strip that is so die-cut and folded as to create a chain of four interhinged branches each having a triangular truss cross section whose base chord is the outer wall of the frame and whose central strut is constituted by parallel walls extending from the apex of the triangle to the base chord to form a narrow slot. Socketed in the slot of each branch is the corresponding flange of the pack whereby the pack is supported by the frame, and the opposite faces of the article which lie within the frame are both exposed to a prospective purchaser who is able to fully examine the article without having to break open the package to do so.Type: GrantFiled: September 20, 1988Date of Patent: July 18, 1989Assignee: Buddy L. CorporationInventors: Leo Hoffman, Robert T. Auer, Richard L. Keats, Stephan Roeser, Lawrence Stern
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Patent number: 4667775Abstract: A hydraulic elevator system having a tunnel member as part of the car frame, to reduce the pit depth required for a hydraulic jack. A stabilizer for the plunger of the hydraulic jack is fixed to the bottom of the tunnel member, with the stabilizer being in an inactive, retracted position while the cylinder head is within the tunnel member. The stabilizer is automatically actuated to an operative plunger support position, as the elevator car rises and the bottom of the tunnel member starts to rise higher than the cylinder head, to provide an additional lateral support point for the plunger. The lateral support function provided by the stabilizer functions at all times, in both the active and inactive positions, without any wear inducing relative motion between the stabilizing surfaces of the stabilizer, and any other element of the system, including the hydraulic jack, its plunger, or the tunnel of the car frame.Type: GrantFiled: April 30, 1986Date of Patent: May 26, 1987Assignee: Westinghouse Electric Corp.Inventor: Lawrence Stern
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Patent number: D532305Type: GrantFiled: March 30, 2006Date of Patent: November 21, 2006Assignee: Waldwick Plastic CorporationInventors: Robert Terrence Fellows, Jeffrey Lawrence Stern, Kwok-Kuen Tong
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Patent number: D533651Type: GrantFiled: November 12, 2005Date of Patent: December 12, 2006Assignee: Waldwick Plastic CorporationInventors: Guillermo Ivan Martinez, Robert Fellows, Jeffrey Lawrence Stern, Kwok-Kuen Tong
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Patent number: D549812Type: GrantFiled: October 19, 2006Date of Patent: August 28, 2007Assignees: Waldwick Plastics Corporation, Kerry, Inc.Inventors: Robert Fellows, Jeffrey Lawrence Stern, Kwok-Kuen Tong, Steven Claisse, Joseph Ponzoni, Jose Michael Nina
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Patent number: D476895Type: GrantFiled: December 31, 2001Date of Patent: July 8, 2003Assignee: Waldwick Plastics CorporationInventors: Robert Terrence Fellows, Alfred G. Prior, Manfred Alois Riegg, Jeffrey Lawrence Stern
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Patent number: D555778Type: GrantFiled: October 19, 2006Date of Patent: November 20, 2007Assignees: Waldwick Plastics Corporation, Kerry, Inc.Inventors: Robert Fellows, Jeffrey Lawrence Stern, Kwok-Kuen Tong, Steven Claisse, Joseph Ponzoni, Jose Michael Nina
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Patent number: D562956Type: GrantFiled: November 12, 2005Date of Patent: February 26, 2008Assignee: Menshen USAInventors: Guillermo Ivan Martinez, Robert Fellows, Jeffrey Lawrence Stern, James Edward Bargmann
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Patent number: D491256Type: GrantFiled: April 28, 2003Date of Patent: June 8, 2004Assignee: Waldwick Plastics CorporationInventors: Robert Terrence Fellows, Alfred G. Prior, Manfred Alois Riegg, Jeffrey Lawrence Stern