Patents by Inventor Dilip K. Chatterjee
Dilip K. Chatterjee 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: 9862879Abstract: An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.Type: GrantFiled: November 24, 2015Date of Patent: January 9, 2018Assignee: Halliburton Energy Services, Inc.Inventors: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala
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Patent number: 9803135Abstract: Proppants having added functional properties are provided, as are methods that use the proppants to track and trace the characteristics of a fracture in a geologic formation. Information obtained by the methods can be used to design a fracturing job, to increase conductivity in the fracture, and to enhance oil and gas recovery from the geologic formation. The functionalized proppants can be detected by a variety of methods utilizing, for example, an airborne magnetometer survey, ground penetrating radar, a high resolution accelerometer, a geophone, nuclear magnetic resonance, ultra-sound, impedance measurements, piezoelectric activity, radioactivity, and the like. Methods of mapping a subterranean formation are also provided and use the functionalized proppants to detect characteristics of the formation.Type: GrantFiled: March 28, 2012Date of Patent: October 31, 2017Assignee: Halliburton Energy Services, Inc.Inventors: Andrew R. Barron, Robert D. Skala, Christopher E. Coker, Dilip K. Chatterjee, Yuming Xie
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Patent number: 9796915Abstract: Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.Type: GrantFiled: July 27, 2015Date of Patent: October 24, 2017Assignee: Halliburton Energy Services, Inc.Inventors: Shanghua Wu, Jody Pham, Yuming Xie, Dilip K. Chatterjee, Andrew Miller, Christopher E. Coker
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Patent number: 9670763Abstract: Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.Type: GrantFiled: January 20, 2011Date of Patent: June 6, 2017Assignee: Halliburton Energy Services, Inc.Inventors: Christopher Y. Fang, Yuming Xie, Dilip K. Chatterjee, Christopher E. Coker
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Patent number: 9315719Abstract: A proppant having low surface friction is described, which is useful in hydrocarbon recovery. Methods of making low surface friction proppants are further described, as well as uses thereof.Type: GrantFiled: July 13, 2012Date of Patent: April 19, 2016Assignee: Halliburton Energy Services, Inc.Inventors: Christopher Y. Fang, Dilip K. Chatterjee, Robert D. Skala, Christopher E. Coker, John R. Loscutova
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Publication number: 20160083645Abstract: An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.Type: ApplicationFiled: November 24, 2015Publication date: March 24, 2016Applicant: Halliburton Energy Services, Inc.Inventors: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala
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Patent number: 9227874Abstract: An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.Type: GrantFiled: January 23, 2012Date of Patent: January 5, 2016Assignee: Halliburton Energy Services, Inc.Inventors: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala
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Publication number: 20150368548Abstract: Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.Type: ApplicationFiled: July 27, 2015Publication date: December 24, 2015Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Shanghua Wu, Jody Pham, Yuming Xie, Dilip K. Chatterjee, Andrew Miller, Christopher E. Coker
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Publication number: 20130244914Abstract: Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.Type: ApplicationFiled: March 18, 2013Publication date: September 19, 2013Applicant: OXANE MATERIALS, INC.Inventors: Shanghua Wu, Jody Pham, Yuming Xie, Dilip K. Chatterjee, Andrew Miiller, Christopher E. Coker
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Publication number: 20130014945Abstract: A proppant having low surface friction is described, which is useful in hydrocarbon recovery. Methods of making low surface friction proppants are further described, as well as uses thereof.Type: ApplicationFiled: July 13, 2012Publication date: January 17, 2013Applicant: OXANE MATERIALS, INC.Inventors: Christopher Y. Fang, Dilip K. Chatterjee, Robert D. Skala, Christopher E. Coker, John R. Loscutova
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Publication number: 20120190597Abstract: An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.Type: ApplicationFiled: January 23, 2012Publication date: July 26, 2012Applicant: OXANE MATERIALS, INC.Inventors: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala
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Publication number: 20120181020Abstract: Proppants having added functional properties are provided, as are methods that use the proppants to track and trace the characteristics of a fracture in a geologic formation. Information obtained by the methods can be used to design a fracturing job, to increase conductivity in the fracture, and to enhance oil and gas recovery from the geologic formation. The functionalized proppants can be detected by a variety of methods utilizing, for example, an airborne magnetometer survey, ground penetrating radar, a high resolution accelerometer, a geophone, nuclear magnetic resonance, ultra-sound, impedance measurements, piezoelectric activity, radioactivity, and the like. Methods of mapping a subterranean formation are also provided and use the functionalized proppants to detect characteristics of the formation.Type: ApplicationFiled: March 28, 2012Publication date: July 19, 2012Applicant: OXANE MATERIALS, INC.Inventors: Andrew R. Barron, Robert D. Skala, Christopher E. Coker, Dilip K. Chatterjee, Yuming Xie
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Publication number: 20120157358Abstract: Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.Type: ApplicationFiled: January 20, 2011Publication date: June 21, 2012Applicant: OXANE MATERIALS, INC.Inventors: Christopher Y. Fang, Yuming Xie, Dilip K. Chatterjee, Christopher E. Coker
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Patent number: 8168570Abstract: Proppants having added functional properties are provided, as are methods that use the proppants to track and trace the characteristics of a fracture in a geologic formation. Information obtained by the methods can be used to design a fracturing job, to increase conductivity in the fracture, and to enhance oil and gas recovery from the geologic formation. The functionalized proppants can be detected by a variety of methods utilizing, for example, an airborne magnetometer survey, ground penetrating radar, a high resolution accelerometer, a geophone, nuclear magnetic resonance, ultra-sound, impedance measurements, piezoelectric activity, radioactivity, and the like. Methods of mapping a subterranean formation are also provided and use the functionalized proppants to detect characteristics of the formation.Type: GrantFiled: May 19, 2009Date of Patent: May 1, 2012Assignee: Oxane Materials, Inc.Inventors: Andrew R. Barron, Robert D. Skala, Christopher E. Coker, Dilip K. Chatterjee, Yuming Xie
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Publication number: 20090288820Abstract: Proppants having added functional properties are provided, as are methods that use the proppants to track and trace the characteristics of a fracture in a geologic formation. Information obtained by the methods can be used to design a fracturing job, to increase conductivity in the fracture, and to enhance oil and gas recovery from the geologic formation. The functionalized proppants can be detected by a variety of methods utilizing, for example, an airborne magnetometer survey, ground penetrating radar, a high resolution accelerometer, a geophone, nuclear magnetic resonance, ultra-sound, impedance measurements, piezoelectric activity, radioactivity, and the like. Methods of mapping a subterranean formation are also provided and use the functionalized proppants to detect characteristics of the formation.Type: ApplicationFiled: May 19, 2009Publication date: November 26, 2009Applicant: OXANE MATERIALS, INC.Inventors: Andrew R. Barron, Robert D. Skala, Christopher E. Coker, Dilip K. Chatterjee, Yuming Xie
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Patent number: 7143609Abstract: A method is provided for molding from glass certain complex optical components, such as lenses, microlens, arrays of microlenses, and gratings or surface-relief diffusers having fine or hyperfine microstructures suitable for optical or electro-optical applications. Thereby, mold masters or patterns, which define the profile of the optical components, made on metal alloys, particularly titanium or nickel alloys, or refractory compositions, with or without a non-reactive coating are used. Given that molding optical components from oxide glasses has numerous drawbacks, it has been discovered in accordance with the invention that non-oxide glasses substantially eliminates these drawbacks. The non-oxide glasses, such as chalcogenide, chalcohalide, and halide glasses, may be used in the mold either in bulk, planar, or power forms. In the mold, the glass is heated to about 10–110° C., preferably about 50° C.Type: GrantFiled: October 29, 2002Date of Patent: December 5, 2006Assignee: Corning IncorporatedInventors: Bruce G Aitken, Dilip K Chatterjee, Daniel H Raguin
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Patent number: 6896830Abstract: A method of making an injection molded article having a marbled appearance, including the steps of: mixing at a temperature of at least 100 degrees ° C. polymeric materials having a thermal conductivity in the range of 0.001 to 0.01 cal/cm-sec-° C. wherein the polymeric materials are selected from the group consisting of polyethylene, polystyrene, polyester, and polycarbonate or combinations thereof, and one or more materials selected from the group consisting of ceramics, ceramic composites, metals and metal alloys in a blended relationship to form a viscous phase mixture, the materials in the viscous phase mixture being selected so that when in a solid phase it has a density greater than 4 grams/cc and a thermal conductivity greater than 0.101 cal/cm-sec-° C. to form a feedstock; cooling the blended viscous phase mixture to form the feedstock; and using the feedstock in an injection molding machine having a zero compression screw to form the article.Type: GrantFiled: January 26, 2001Date of Patent: May 24, 2005Assignee: Eastman Kodak CompanyInventors: Donn B. Carlton, Dilip K. Chatterjee, Syamal K. Ghosh
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Publication number: 20040226910Abstract: Methods of forming bulk optical elements, such as prisms, incorporating gratings are disclosed. Grating structures are formed by etching a uniform-thickness or generally planar substrate. Direct bonding, particularly chemical bonding, is then employed to bond the etched planar substrate to a bulk optical material without the use of adhesives or high temperature fusion.Type: ApplicationFiled: December 29, 2003Publication date: November 18, 2004Inventors: Dilip K. Chatterjee, John F. Filhaber, John R. Marciante, Jeff Hirsh, Larry Mann, Daniel H. Raguln, Robert Sabia, Dennis W. Smith, Tony L. Whitman
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Patent number: 6797314Abstract: A method of handling powders of organic materials in making an organic light-emitting device (OLED) is disclosed. The method includes forming solid pellets from powders of organic materials and using such pellets in a thermal physical vapor deposition source for making an organic layer on a structure which will form part of an OLED.Type: GrantFiled: July 3, 2001Date of Patent: September 28, 2004Assignee: Eastman Kodak CompanyInventors: Steven A. Van Slyke, Dilip K. Chatterjee, Syamal K. Ghosh, Donn B. Carlton
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Publication number: 20040079114Abstract: In one aspect, a method is provided for molding from glass complex optical components such as lenses, microlens, arrays of microlenses, and gratings or surface-relief diffusers having fine or hyperfine microstructures suitable for optical or electro-optical applications. In another aspect, mold masters or patterns, which define the profile of the optical components, made on metal alloys, particularly titanium or nickel alloys, or refractory compositions, with or without a non-reactive coating are provided. Given that molding optical components from oxide glasses has numerous drawbacks, it has been discovered in accordance with the invention that non-oxide glasses substantially eliminates these drawbacks. The non-oxide glasses, such as chalcogenide, chalcohalide, and halide glasses, may be used in the mold either in bulk, planar, or power forms. In the mold, the glass is heated to about 10-110° C., preferably about 50° C.Type: ApplicationFiled: October 29, 2002Publication date: April 29, 2004Inventors: Bruce G. Aitken, Dilip K. Chatterjee, Daniel H. Raguin