Patents by Inventor Robert L. Jacobson
Robert L. Jacobson 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: 7028259Abstract: A software utility scans a word processing document to locate citations to court opinions. It parses each citation to determine its constituent elements, such as the citation's case name, the reporters in which it is published, its jurisdiction and court, and its date. It then compares the citation as it is written against stylistic rules for legal citations. If it finds a deviation from one of the stylistic rules, it displays a message to inform the user of the error and, if possible, suggests specific changes to correct the error. If the user accepts one of the corrections, the utility makes that change to the word processing document.Type: GrantFiled: February 1, 2001Date of Patent: April 11, 2006Inventor: Robert L. Jacobson
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Patent number: 5611914Abstract: Provided is a method for removing residual sulfur from a hydrotreated naphtha feed. The process comprises contacting the naphtha feed with massive nickel catalyst in the presence of hydrogen. The contacting is generally accomplished in the temperature range of 300.degree. F. to about 450.degree. F. Such contacting has been found to achieve quite effective removal of sulfur, particularly thiophenes.Type: GrantFiled: August 12, 1994Date of Patent: March 18, 1997Assignee: Chevron Chemical CompanyInventors: William R. Prince, Robert L. Jacobson
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Patent number: 5518607Abstract: A process is disclosed for removing residual sulfur from a hydrotreated naphtha feedstock. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst to convert trace sulfur compounds to H.sub.2 S, and to form a first effluent. The first effluent is contacted with a solid sulfur sorbent to remove the H.sub.2 S and form a second effluent. The second effluent is then contacted with a highly selective reforming catalyst under severe reforming conditions. Also disclosed is a method using a potassium containing sulfur sorbent made from nitrogen-free potassium compounds.Type: GrantFiled: January 4, 1993Date of Patent: May 21, 1996Inventors: Leslie A. Field, Ann Marie K. Hall, Richard C. Robinson, Robert L. Jacobson, Warren E. Brown, Dennis L. Holtermann
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Patent number: 5439583Abstract: A process is disclosed for removing residual sulfur from a hydrotreated naphtha feedstock. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst to convert trace sulfur compounds to H.sub.2 S, and to form a first effluent. The first effluent is contacted with a solid sulfur sorbent to remove the H.sub.2 S and form a second effluent. The second effluent is then contacted with a highly selective reforming catalyst under severe reforming conditions. Also disclosed is a method using a potassium containing sulfur sorbent made from nitrogen-free potassium compounds.Type: GrantFiled: January 4, 1993Date of Patent: August 8, 1995Assignee: Chevron Research and Technology CompanyInventors: Richard C. Robinson, Robert L. Jacobson, Harris E. Kluksdahl, William A. Blanton, Dennis L. Holtermann, Leslie A. Field
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Patent number: 5259946Abstract: A process for removing residual sulfur from a hydrotreated naphtha feedstock is disclosed. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst, thereby converting trace sulfur compounds to H.sub.2 S, and forming a first effluent. The first effluent is contacted with a solid sulfur sorbent, removing the H.sub.2 S and forming a second effluent. The second effluent is contacted with a highly selective reforming catalyst under severe reforming conditions.Type: GrantFiled: September 29, 1992Date of Patent: November 9, 1993Assignee: Chevron Research and Technology CompanyInventors: Richard C. Robinson, Robert L. Jacobson, Leslie A. Field
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Patent number: 5198404Abstract: A catalyst composition and process for using said catalyst is disclosed wherein the catalyst comprises 0.24 to 0.26 weight percent platinum and 0.48 to 0.52 weight percent rhenium disposed on an alumina spheroidal carrier.Type: GrantFiled: November 1, 1991Date of Patent: March 30, 1993Assignee: Chevron Research and Technology CompanyInventors: John H. Arndt, Robert L. Jacobson
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Patent number: 4925549Abstract: A process for removing residual sulfur from a hydrotreated naphtha feedstock is disclosed. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst, thereby converting trace sulfur compounds to H.sub.2 S, and forming a first effluent. The first effluent is contacted with a solid sulfur sorbent, removing the H.sub.2 S and forming a second effluent. The second effluent is contacted with a highly selective reforming catalyst under severe reforming conditions.Type: GrantFiled: March 10, 1988Date of Patent: May 15, 1990Assignee: Chevron Research CompanyInventors: Richard C. Robinson, Robert L. Jacobson, Leslie A. Field
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Patent number: 4851380Abstract: The present invention is a process for regenerating a sulfur-contaminated, highly selective, large-pore zeolite catalyst. It comprises a multistep process involving exposure of the catalyst to a combination of oxidizing conditions, reducing conditions and treatment with a halogen acid gas. These conditions are effective to agglomerate a Group VIII metal and remove sulfur. Thereafter, the catalyst is oxychlorinated to redisperse the Group VIII metal over the catalyst surface. A carbon removal step is optionally included.Type: GrantFiled: July 31, 1987Date of Patent: July 25, 1989Assignee: Chevron Research CompanyInventors: Dean A. Van Leirsburg, Donald H. Mohr, Paul W. Tamm, Robert L. Jacobson, Thomas R. Hughes, Charles R. Wilson
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Patent number: 4741819Abstract: A process for removing residual sulfur from a hydrotreated naphtha feedstock is disclosed. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst, thereby converting trace sulfur compounds to H.sub.2 S, and forming a first effluent. The first effluent is contacted with a solid sulfur sorbent, removing the H.sub.2 S and forming a second effluent. The second effluent is contacted with a highly selective reforming catalyst under severe reforming conditions.Type: GrantFiled: October 31, 1984Date of Patent: May 3, 1988Assignee: Chevron Research CompanyInventors: Richard C. Robinson, Robert L. Jacobson, Leslie A. Field
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Patent number: 4650565Abstract: A process is disclosed wherein a naphtha feed is contacted in a reaction vessel with a dehydrocyclization catalyst comprising a large-pore zeolite containing at least one Group VIII metal to produce an aromatics product and a gaseous stream, the aromatics product is separated from the gaseous stream and is passed through a molecular sieve which adsorbs paraffins present in the aromatics product, then the gaseous stream is used to strip the paraffins from the molecular sieve, and the gaseous stream and the paraffins are recycled to the reaction vessel. Preferably, the dehydrocyclization catalyst comprises a type L zeolite containing from 8% to 15% by weight barium and from 0.6% to 1.0% by weight platinum, wherein at least 80% of the crystals of the type L zeolite are larger than 1000 Angstroms, and an inorganic binder selected from the group consisting of silica, alumina, and aluminosilicates.Type: GrantFiled: September 29, 1982Date of Patent: March 17, 1987Assignee: Chevron Research CompanyInventors: Robert L. Jacobson, Lawrence W. Jossens
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Method of producing high aromatic yields through aromatics removal and recycle of remaining material
Patent number: 4648961Abstract: A naphtha feed is contacted in a reaction vessel with a dehydrocyclization catalyst comprising a large-pore zeolite containing at least one Group VIII metal to produce an aromatics product and a gaseous stream, the aromatics product is separated from the gaseous stream and is passed through a molecular sieve which adsorbs paraffins present in the aromatics product, then the gaseous stream is used to strip the paraffins from the molecular sieve, and the gaseous stream and the paraffins are recycled to the reaction vessel.Type: GrantFiled: August 17, 1984Date of Patent: March 10, 1987Assignee: Chevron Research CompanyInventors: Robert L. Jacobson, Lawrence W. Jossens -
Patent number: 4460457Abstract: In a process for reforming light naphtha with a bimetallic or multimetallic reforming catalyst, such as a platinum-rhenium-halogen catalyst, at conventional reforming conditions, wherein the catalyst is used for an extended continuous on-stream period, the aromatics selectivity of the catalyst is rapidly increased by contacting the naphtha and hydrogen with the catalyst at increased severity operating conditions, such as a reduced pressure less than 90% of the normal reforming pressure, during an initial portion of the on-stream period.Type: GrantFiled: August 18, 1980Date of Patent: July 17, 1984Assignee: Chevron Research CompanyInventors: Kirk R. Gibson, Robert J. Houston, Thomas R. Hughes, Robert L. Jacobson
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Patent number: 4459204Abstract: Small amounts of lower alcohols are admixed with sour hydrocarbons and the mixture is contacted with a copper-containing catalyst at an elevated temperature. The alcohol serves as the oxygen source for the catalytic oxygenative conversion to disulfides of mercaptans souring the hydrocarbon.Type: GrantFiled: September 23, 1983Date of Patent: July 10, 1984Assignee: Chevron Research CompanyInventors: William C. Hecker, Richard C. Robinson, Robert L. Jacobson
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Patent number: 4442221Abstract: A process for regenerating a spent copper-porous refractory metal oxide carrier composite sorbent for removing sulfur-containing compounds from naphthas in which the spent sorbent is optionally stripped of absorbed naphtha, oxidized to convert absorbed sulfur to sulfates or sulfur dioxide, optionally reduced to further convert absorbed sulfur to sulfur dioxide, and, finally, impregnated with fresh copper via contact with an aqueous solution of a copper salt followed by drying and calcining to convert the salt to copper oxide or copper metal whereby a substantial portion of the sulfur sorbent activity and lifetime of the sorbent is restored.Type: GrantFiled: April 9, 1982Date of Patent: April 10, 1984Assignee: Chevron Research CompanyInventors: Keith C. Bishop, III, David E. Earls, Richard C. Robinson, Donald W. Blakely, deceased, by Robert L. Jacobson, administrator
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Patent number: 4241231Abstract: Isomerizable light paraffinic hydrocarbon feeds are isomerized in an improved process using a particular super-chlorided reforming catalyst under isomerizing conditions. A chloride source in the feed stabilizes the catalyst. This process provides for a material octane improvement of the feed without excessive loss thereof to normally gaseous hydrocarbons.Type: GrantFiled: October 2, 1978Date of Patent: December 23, 1980Assignee: Chevron Research CompanyInventors: Kirk R. Gibson, Robert L. Jacobson, Manfred J. Michlmayr
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Patent number: 4204947Abstract: Thiol impurities are absorbed and removed from hydrocarbon oils by contacting the oil in the absence of molecular oxygen with a scavenger at a temperature in the range of about 120.degree. to 400.degree. C. The scavenger is a composite having a copper component and an inorganic porous carrier component and having a surface area in the range 20 to 1000 square meters per gram. The contacting must be discontinued when the thiol impurity content of the effluent product exceeds about 0.3 ppm.Type: GrantFiled: June 12, 1978Date of Patent: May 27, 1980Assignee: Chevron Research CompanyInventors: Robert L. Jacobson, Kirk R. Gibson
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Patent number: 4163708Abstract: Thiol impurities are removed from hydrocarbon oils by contacting the oil with a scavenger at a temperature in the range of about 120.degree. to 400.degree. C. The scavenger is a composite having a copper component and an inorganic porous carrier component and having a surface area in the range 20 to 1000 square meters per gram. The contacting must be with the scavenger below its thiol-sulfur end point.Type: GrantFiled: April 3, 1978Date of Patent: August 7, 1979Assignee: Chevron Research CompanyInventors: Robert L. Jacobson, K. R. Gibson
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Patent number: 4062903Abstract: A process is disclosed for producing a selected C.sub.8 alkylaromatic isomer from a feedstock containing a less than equilibrium concentration of the selected isomer and a low C.sub.8 naphthenes concentration, in which the feedstock is first contacted with a platinum-halogen catalyst at low temperature isomerization conditions to form an intermediate reaction mixture containing a substantial amount of C.sub.8 naphthenes and a partially isomerized mixture of C.sub.8 alkylaromatics; the intermediate mixture is then contacted with another platinum-halogen catalyst at higher temperature dehydrogenation conditions to form a final product mixture with a very low naphthenes content and a substantially equilibrium concentration of the selected isomer; and the selected xylene isomer is recovered from the final product mixture.Type: GrantFiled: September 24, 1976Date of Patent: December 13, 1977Assignee: Chevron Research CompanyInventor: Robert L. Jacobson
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Patent number: 4059645Abstract: An alkylaromatic hydrocarbon is isomerized by contacting a feed including the alkylaromatic and hydrogen in the presence of 1.5-150 ppm free chloride, and not more than 10 ppm water, with a catalyst containing platinum, rhenium and more than 1.2 weight percent combined chloride on an alumina support at 650.degree.-950.degree. F and 100-300 psi hydrogen pressure.Type: GrantFiled: November 10, 1976Date of Patent: November 22, 1977Assignee: Chevron Research CompanyInventor: Robert L. Jacobson
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Patent number: RE34250Abstract: The present invention is a process for regenerating a sulfur-contaminated, highly selective, large-pore zeolite catalyst. It comprises a multistep process involving exposure of the catalyst to a combination of oxidizing conditions, reducing conditions and treatment with a halogen acid gas. These conditions are effective to agglomerate a Group VIII metal and remove sulfur. Thereafter, the catalyst is oxychlorinated to redisperse the Group VIII metal over the catalyst surface. A carbon removal step is optionally included.Type: GrantFiled: July 22, 1991Date of Patent: May 11, 1993Assignee: Chevron Research and Technology CompanyInventors: Dean A. Van Leirsburg, Donald H. Mohr, Paul W. Tamm, Robert L. Jacobson, Thomas R. Hughes, Charles R. Wilson