Patents by Inventor Kishor P. Gadkaree
Kishor P. Gadkaree 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: 8053331Abstract: Processes for transferring a semiconductor material to a polymer substrate to provide flexible semiconductor material include implanting ions to a predetermined depth in a semiconductor substrate, heat-treating the ion-implanted semiconductor substrate for a period of time and at a temperature effective to cause defect formation and enlargement of the implanted ion defect, adhering the ion-implanted, heat-treated substrate to a polymer substrate, and separating a semiconductor film such as a single crystal silicon film from the semiconductor substrate; and devices having single crystal silicon films disposed directly or indirectly on polymer films.Type: GrantFiled: December 21, 2009Date of Patent: November 8, 2011Assignee: Corning IncorporatedInventor: Kishor P. Gadkaree
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Patent number: 7960736Abstract: The present invention relates to a semiconductor-on-insulator structure including a semiconductor component comprised of substantially single-crystal semiconductor material layer and a single-crystal semiconductor material with an enhanced oxygen content layer; an oxide glass material layer; and a glass-ceramic layer.Type: GrantFiled: September 26, 2008Date of Patent: June 14, 2011Assignee: Corning IncorporatedInventors: Kishor P. Gadkaree, Linda R. Pinckney
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Patent number: 7838935Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer (15) of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate (20) composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300-1000° C.). The bond strength between the semiconductor layer (15) and the support substrate (20) is preferably at least 8 joules/meter2. The semiconductor layer (15) can include a hybrid region (16) in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: GrantFiled: December 4, 2008Date of Patent: November 23, 2010Assignee: Corning IncorporatedInventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Publication number: 20100213582Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer (15) of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate (20) composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300-1000° C.). The bond strength between the semiconductor layer (15) and the support substrate (20) is preferably at least 8 joules/meter2. The semiconductor layer (15) can include a hybrid region (16) in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: ApplicationFiled: December 4, 2008Publication date: August 26, 2010Inventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Publication number: 20100099237Abstract: Processes for transferring a semiconductor material to a polymer substrate to provide flexible semiconductor material include implanting ions to a predetermined depth in a semiconductor substrate, heat-treating the ion-implanted semiconductor substrate for a period of time and at a temperature effective to cause defect formation and enlargement of the implanted ion defect, adhering the ion-implanted, heat-treated substrate to a polymer substrate, and separating a semiconductor film such as a single crystal silicon film from the semiconductor substrate; and devices having single crystal silicon films disposed directly or indirectly on polymer films.Type: ApplicationFiled: December 21, 2009Publication date: April 22, 2010Inventor: Kishor P. Gadkaree
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Patent number: 7605053Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300-1000° C.). The bond strength between the semiconductor layer and the support substrate is preferably at least 8 joules/meter2. The semiconductor layer can include a hybrid region in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: GrantFiled: April 9, 2008Date of Patent: October 20, 2009Assignee: Corning IncorporatedInventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Publication number: 20090085176Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer (15) of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate (20) composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300-1000° C.). The bond strength between the semiconductor layer (15) and the support substrate (20) is preferably at least 8 joules/meter2. The semiconductor layer (15) can include a hybrid region (16) in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: ApplicationFiled: December 4, 2008Publication date: April 2, 2009Inventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Publication number: 20090050901Abstract: The present invention relates to a semiconductor-on-insulator structure including a semiconductor component comprised of substantially single-crystal semiconductor material layer and a single-crystal semiconductor material with an enhanced oxygen content layer; an oxide glass material layer; and a glass-ceramic layer.Type: ApplicationFiled: September 26, 2008Publication date: February 26, 2009Applicant: CORNING INCORPORATEDInventors: Kishor P. Gadkaree, Linda R. Pinckney
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Patent number: 7476940Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer (15) of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate (20) composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300-1000° C.). The bond strength between the semiconductor layer (15) and the support substrate (20) is preferably at least 8 joules/meter2. The semiconductor layer (15) can include a hybrid region (16) in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: GrantFiled: January 5, 2007Date of Patent: January 13, 2009Assignee: Corning IncorporatedInventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Publication number: 20080224254Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300-1000° C.). The bond strength between the semiconductor layer and the support substrate is preferably at least 8 joules/meter2. The semiconductor layer can include a hybrid region in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: ApplicationFiled: April 9, 2008Publication date: September 18, 2008Applicant: Corning IncorporatedInventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Patent number: 7297299Abstract: The channel-plugging of porous ceramic honeycombs to provide wall flow filter bodies therefrom is carried out using water-based cements comprising ceramic powders and soluble alkali metal silicates; the cements form durable plugs that are resistant to thermal and chemical damage upon drying and without firing.Type: GrantFiled: April 4, 2006Date of Patent: November 20, 2007Assignee: Corning IncorporatedInventors: Kishor P. Gadkaree, Joseph F. Mach
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Patent number: 7282738Abstract: A method of forming crystalline or polycrystalline layers includes providing a substrate and a patterning over the substrate. The method also includes providing nucleation material and forming the crystalline layer over the nucleation material. The crystalline material disposed over the substrate may be monocrystalline or polycrystalline.Type: GrantFiled: May 21, 2004Date of Patent: October 16, 2007Assignee: Corning IncorporatedInventors: James G. Couillard, Kishor P. Gadkaree, Youchun Shi
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Patent number: 7192844Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer (15) of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate (20) composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300–1000° C.). The bond strength between the semiconductor layer (15) and the support substrate (20) is preferably at least 8 joules/meter2. The semiconductor layer (15) can include a hybrid region (16) in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: GrantFiled: July 8, 2005Date of Patent: March 20, 2007Assignee: Corning IncorporatedInventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Patent number: 7176528Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer (15) of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate (20) composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 ?-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300–1000° C.). The bond strength between the semiconductor layer (15) and the support substrate (20) is preferably at least 8 joules/meter2. The semiconductor layer (15) can include a hybrid region (16) in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: GrantFiled: February 12, 2004Date of Patent: February 13, 2007Assignee: Corning IncorporatedInventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Patent number: 6982001Abstract: The invention is directed to a process of purifying metal fluoride materials used to make metal fluoride single crystals suitable for making optical elements used in the transmission of wavelengths below 200 nm, and in particular to a process of purifying such materials by the use of a halogen containing plasma to convert metal oxygenates contaminating the feedstocks used in the preparation of the crystals to metal fluorides. The invention also is directed to a process of growing a metal fluoride single crystal using a crystal growth furnace to carry out the foregoing purification procedure followed by the steps of melting the purified material and cooling it using s selected time and temperature cycle to from a metal fluoride single crystal.Type: GrantFiled: May 28, 2004Date of Patent: January 3, 2006Assignee: Corning IncorporatedInventors: Robert A. Bellman, Dana C. Bookbinder, Kishor P. Gadkaree, Cynthia B. Giroux
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Publication number: 20040229444Abstract: Semiconductor-on-insulator (SOI) structures, including large area SOI structures, are provided which have one or more regions composed of a layer (15) of a substantially single-crystal semiconductor (e.g., doped silicon) attached to a support substrate (20) composed of an oxide glass or an oxide glass-ceramic. The oxide glass or oxide glass-ceramic is preferably transparent and preferably has a strain point of less than 1000° C., a resistivity at 250° C. that is less than or equal to 1016 &OHgr;-cm, and contains positive ions (e.g., alkali or alkaline-earth ions) which can move within the glass or glass-ceramic in response to an electric field at elevated temperatures (e.g., 300-1000° C.). The bond strength between the semiconductor layer (15) and the support substrate (20) is preferably at least 8 joules/meter2. The semiconductor layer (15) can include a hybrid region (16) in which the semiconductor material has reacted with oxygen ions originating from the glass or glass-ceramic.Type: ApplicationFiled: February 12, 2004Publication date: November 18, 2004Inventors: James G. Couillard, Kishor P. Gadkaree, Joseph F. Mach
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Patent number: 6803028Abstract: Methods of manufacturing stoichiometric lithium niobate elements are provided. The method involves heating lithium niobate substrates in the presence of a monolithic sintered source of lithium and/or niobium. The method is useful for producing lithium niobate optical elements such as waveguides, switches and modulators.Type: GrantFiled: April 8, 2002Date of Patent: October 12, 2004Assignee: Corning IncorporatedInventors: Kishor P. Gadkaree, Kamal K. Soni
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Patent number: 6736875Abstract: Composite cordierite honeycomb structures especially suitable for diesel exhaust filtration applications comprise a non-oxide polycrystalline phase constituting 10-70% by weight, with the remainder of the ceramic material constituting a cordierite phase, the non-oxide polycrystalline phase being selected from the group consisting of carbides, nitrides, and borides. Preferably the non-oxide phase is either polycrystalline silicon carbide or polycrystalline silicon nitride and has a particle aspect ratio of less than 3. Inventive ceramic bodies are porous with an open porosity of at least 30%, preferably between 40% and 60%, and a median pore size of at least 5 micrometers, more preferably greater than 8 micrometers and less than 12 micrometers.Type: GrantFiled: December 13, 2001Date of Patent: May 18, 2004Assignee: Corning IncorporatedInventors: Kishor P. Gadkaree, Yanxia Lu, Joseph F. Mach, Christopher J. Warren, Yuming Xie
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Patent number: 6699412Abstract: A process for forming a silicon carbide structure includes molding by compression a mixture of a silicon precursor powder and a cross-linking thermoset resin to form a rigid structure, carbonizing the rigid structure, and forming a silicon carbide structure by heating the carbonized rigid structure at a temperature sufficient to allow carbon and silicon in the structure to react to form silicon carbide.Type: GrantFiled: November 20, 2001Date of Patent: March 2, 2004Assignee: Corning IncorporatedInventors: Kishor P. Gadkaree, Joseph F. Mach
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Publication number: 20030190132Abstract: Methods of manufacturing stoichiometric lithium niobate elements are provided. The method involves heating lithium niobate substrates in the presence of a monolithic sintered source of lithium and/or niobium. The method is useful for producing lithium niobate optical elements such as waveguides, switches and modulators.Type: ApplicationFiled: April 8, 2002Publication date: October 9, 2003Inventors: Kishor P. Gadkaree, Kamal K. Soni