Patents by Inventor Patrick M Burke
Patrick M Burke 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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Publication number: 20240103068Abstract: An apparatus is described for burn-in and/or functional testing of microelectronic circuits of unsingulated wafers. A large number of power, ground, and signal connections can be made to a large number of contacts on a wafer. The apparatus has a cartridge that allows for fanning-in of electric paths. A distribution board has a plurality of interfaces that are strategically positioned to provide a dense configuration. The interfaces are connected through flexible attachments to an array of first connector modules. Each one of the first connector modules can be independently connected to a respective one of a plurality of second connector modules, thereby reducing stresses on a frame of the apparatus. Further features include for example a piston that allows for tight control of forces exerted by terminals onto contacts of a wafer.Type: ApplicationFiled: November 29, 2023Publication date: March 28, 2024Applicant: AEHR TEST SYSTEMSInventors: Donald P. Richmond, II, Kenneth W. Deboe, Frank O. Uher, Jovan Jovanovic, Scott E. Lindsey, Thomas T. Maenner, Patrick M. Shepherd, Jeffrey L. Tyson, Mark C. Carbone, Paul W. Burke, Doan D. Cao, James F. Tomic, Long V. Vu
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Patent number: 6664427Abstract: The invention relates to a process for the making organic aldehyde compounds from an unsaturated compound by hydroformylation and in the presence of a catalyst system comprising a Group VIII metal and a bidentate phosphorus ligand having two trivalent phosphorus atoms bound to salicylanilide groups.Type: GrantFiled: August 29, 2002Date of Patent: December 16, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Patrick M. Burke, James Michael Garner, Wilson Tam
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Publication number: 20020052531Abstract: Supported bis(phosphorus) ligands are disclosed for use in hydroformylation reactions, including the hydroformylation of olefins. Catalysts are formed when the ligands are complexed with a catalytically active metal (e.g., rhodium or iridium).Type: ApplicationFiled: February 16, 2001Publication date: May 2, 2002Inventors: Emilio E. Bunel, Patrick M. Burke, Joy D. Druliner, Leo E. Manzer, Kenneth G. Moloy, Manxue Wang
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Patent number: 6175036Abstract: Process for the preparation of an alkyl pentenoate respectively an aryl pentenoate by contacting an alkoxy-butene respectively an aryloxy-butene compound with carbon monoxide in the presence of a catalyst system comprising palladium, a phosphorus ligand and an acid promotor, wherein the molar ratio of 3-alkoxy-1-butene to 1-alkoxy-2-butene, respectively the molar ratio of 3-aryloxy-1-butene to 1-aryloxy-2-butene, is higher than 4.Type: GrantFiled: August 26, 1999Date of Patent: January 16, 2001Assignee: DSM N.V.Inventors: Henk Oevering, Patrick M Burke, Otto E Sielcken
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Patent number: 6049005Abstract: Process to prepare a pentenoic acid anhydride in the pressence of a catalyst comprising palladium and an organic phosphine ligand, wherein the corresponding alkoxycarbonyl butene is reacted with carbon monoxide at a temperature between 50 and 130.degree. C. and that the phosphine is a monodentate phosphine or a bidentate phosphine.Type: GrantFiled: October 7, 1997Date of Patent: April 11, 2000Assignees: DSM N.V., E. I. du Pont de NemoursInventor: Patrick M. Burke
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Patent number: 6018081Abstract: A hydroformylation process for preparating a terminal aldehyde involves reacting an ethylenically unsaturated organic compound with carbon monoxide and hydrogen in the presence of a catalyst system iridium or rhodium and a bidentate organic phosphite ligand wherein the two phosphorus atoms of the phopshite ligand are linked with a 2,2'-dihydroxyl-1,1'-binapthalene bridging group having the following structure (Q): ##STR1## in which R.sup.1 and R.sup.2 are substituents other than hydrogen and in which R.sup.3 and R.sup.4 are the same or different substituted monovalent aryl groups and/or any one of OR.sup.3 and OR.sup.4 connected to one phosphorus atom forms an --O--R.sup.5 --O-group, where R.sup.5 is a divalent organic group containing one or two aryl groups.Type: GrantFiled: April 28, 1997Date of Patent: January 25, 2000Assignees: DSM N.V., EI DuPont De Nemours and CompanyInventors: Patrick M. Burke, James M. Garner, Wilson Tam, Kristina A. Kreutzer, Antonius J. J. M. Teunissen, Carina S. Snijder, Carolina B. Hansen
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Patent number: 5874641Abstract: A hydroformylation catalyst composition comprising iridium or rhodium and a bidentate organic phosphite ligand wherein the two phosphorus atoms of the phopshite ligand are linked with a 2,2'-dihydroxyl-1,1'-binapthalene bridging group having the following structure (Q): ##STR1## in which R.sup.1 and R.sup.2 are substituents other than hydrogen.Type: GrantFiled: April 28, 1997Date of Patent: February 23, 1999Assignees: DSM N.V., E. I. du Pont de Nemours and CompanyInventors: Patrick M. Burke, James M. Garner, Wilson Tam, Kristina A. Kreutzer, Antonius J.J.M. Teunissen, Carina S. Snijder, Carolina B. Hansen
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Patent number: 5710344Abstract: The invention relates to a process for the preparation of linear aldehydes by hydroformylation of ethylenically unsaturated organic compounds in the presence of a catalyst system comprising a Group VIII metal and a bidentate organic ligand. The bidentate organic ligand is characterized in that it has two trivalent phosphorus atoms each containing at least one P--C or one P--N bond.Type: GrantFiled: November 8, 1996Date of Patent: January 20, 1998Assignees: E. I. Du Pont de Nemours and Company, DSM N.V.Inventors: Anne Irisa Breikss, Patrick M. Burke, James Michael Garner, Wilson Tam
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Patent number: 5618983Abstract: A hydroformylation process for the production of linear aldehydes from linear olefins, by the reaction of the olefin with hydrogen and carbon monoxide in a solvent containing a catalyst having a platinum component or palladium component, a bidentate diaryl phosphine component where the bridging group is ferrocenyl or 3 to 6 carbon atoms, and a metal promoter component.Type: GrantFiled: August 25, 1995Date of Patent: April 8, 1997Assignees: E. I. Du Pont de Nemours and Company, DSM N. V.Inventor: Patrick M. Burke
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Patent number: 5414115Abstract: An improved process for the isomerization of saturated alkyl carboxylic acids is obtained by using aluminum iodide or aluminum bromide promoted rhodium or iridium catalysts.Type: GrantFiled: August 19, 1993Date of Patent: May 9, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Patrick M. Burke
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Patent number: 5359137Abstract: Conversion of certain lactones by reaction with carbon monoxide and water, in the presence of a homogeneous rhodium catalyst and an iodide or bromide promoter, to produce adipic acid.Type: GrantFiled: April 26, 1989Date of Patent: October 25, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Patrick M. Burke
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Patent number: 5250726Abstract: Preparation of 3-pentenoic acid by reacting butadiene and carbon monoxide using a rhodium catalyst and a sulfonic acid catalyst in water and a carboxylic acid solvent.Type: GrantFiled: August 24, 1992Date of Patent: October 5, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Patrick M. Burke
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Patent number: 5145995Abstract: Preparation of 3-pentenoic acid from butadiene, water and carbon monoxide in an organic acid solvent in the presence of a rhodium catalyst and a bromide or iodide promoter.Type: GrantFiled: June 26, 1989Date of Patent: September 8, 1992Assignee: E. I. du Pont de Nemours and CompanyInventor: Patrick M. Burke
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Patent number: 5077425Abstract: A process for the hydrocarboxylation of alkenes and non-conjugated olefinically unsaturated nitriles and esters using a rhodium catalyst, a bromide or iodide promoter, and a nitrile accelerator.Type: GrantFiled: April 2, 1990Date of Patent: December 31, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: Patrick M. Burke
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Patent number: 5001257Abstract: Perfluorinated acid ion-exchange resins are highly effective catalysts for the isomerization of 3-pentenoic compounds to 4-pentenoic compounds, especially if the catalysts contain a group 8 metal in an oxidation state of at least +2.Type: GrantFiled: May 11, 1987Date of Patent: March 19, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Patrick M. Burke, Francis J. Waller
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Patent number: 4950778Abstract: Manufacture of 5-cyanovaleric acid by carbonylation of pentenenitriles from a mixture consisting essentially of pentenenitrile, CO and at least one compound of the formula ROH, where R is hydrogen or alkyl of 1 to 6 carbon atoms, and a cyclic urea and/or a cyclic amide, where the combined weight of the cosolvents is between about 70% and 99% of the total weight of the reaction mixture.Type: GrantFiled: November 8, 1989Date of Patent: August 21, 1990Assignee: E. I. Du Pont de Nemours & CompanyInventors: Patrick M. Burke, James B. Sieja
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Patent number: 4939298Abstract: Isomerization of branched saturated alkyl carboxylic acids to linear or isomeric branched alkyl carboxylic acids, or vice versa, by heating in the presence of a iodide or bromide promoted rhodium catalyst and carbon monoxide.Type: GrantFiled: August 10, 1989Date of Patent: July 3, 1990Assignee: E. I. du Pont de Nemours and CompanyInventor: Patrick M. Burke
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Patent number: 4933483Abstract: Manufacture of 5-cyanovaleric acid and its esters by carbonylation of pentenenitriles from a mixture consisting essentially of pentenenitrile, CO and at least one compound of the formula R'OH, where R is hydrogen or alkyl of 1 to 6 carbon atoms.Type: GrantFiled: December 12, 1988Date of Patent: June 12, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Patrick M. Burke, James B. Sieja
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Patent number: 4909965Abstract: The life of a salcomine catalyst used in the oxidation of phenols to quinones (e.g., of o-phenylphenol to phenyl-p-benzoquinone) is increased by the presence of a water- or acid-removing substance, e.g., a non-acid-forming chemical water scavenger, a molecular sieve, a weak inorganic base, or a sterically hindered organic base, in the reaction medium. Suitable water- or acid-removing substances include carbodiimides, e.g., dicyclohexylcarbodiimide; a Type 3A or 4A molecular sieve; finely divided metal oxides or metal carbonates, e.g., barium carbonate; and 2,6-lutidine. These substances chemically transform by-product carboxylic acids, and/or prevent the formation of such acids, whereby the life of the salcomine catalyst is prolonged.Type: GrantFiled: August 3, 1981Date of Patent: March 20, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventor: Patrick M. Burke
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Patent number: 4895976Abstract: Isomerization of 3-pentenoate esters to 4-pentenoate esters using homogeneous or heterogeneous catalysts of zero valent nickel complexes with an acid promoter.Type: GrantFiled: May 23, 1988Date of Patent: January 23, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Patrick M. Burke, Norman Herron, Stephan J. McLain