Patents by Inventor James G. Mitchell
James G. Mitchell 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: 9281268Abstract: A multi-level interposer plate and a multi-chip module (MCM) that includes the multi-level interposer plate are described. First surfaces and second surfaces in different regions of the multi-level interposer plate have associated, different thicknesses. Moreover, first micro-spring connectors and second micro-spring connectors are respectively disposed on the first surfaces and the second surfaces. In the MCM, a given one of the first surfaces of the multi-level interposer plate faces a bridge chip in a first layer in an array of chips in the MCM so that first connectors, disposed on the bridge chip, mechanically and electrically couple to the first micro-spring connectors. Similarly, a given one of the second surfaces of the multi-level interposer plate faces an island chip in a second layer in the array of chips so that second connectors, disposed on the island chip, mechanically and electrically couple to the second micro-spring connectors.Type: GrantFiled: June 13, 2012Date of Patent: March 8, 2016Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Eugene M. Chow, John E. Cunningham, James G. Mitchell, Ivan Shubin
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Patent number: 8659161Abstract: A chip package includes a substrate having a positive feature, which is defined on a surface of the substrate and which protrudes above a region on the surface proximate to the positive feature. Furthermore, the chip package includes a mechanical reinforcement mechanism defined on the substrate proximate to the positive feature that increases a lateral shear strength of the positive feature relative to the substrate. In this way, the chip package may facilitate increased reliability of a multi-chip module (MCM) that includes the chip package.Type: GrantFiled: June 21, 2011Date of Patent: February 25, 2014Assignee: Oracle International CorporationInventors: Ashok V. Krishnamoorthy, Craig A. Stephen, John E. Cunningham, James G. Mitchell
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Patent number: 8476749Abstract: A chip package is described. This chip package includes a stack of semiconductor dies or chips that are offset from each other, thereby defining a terrace with exposed pads. A high-bandwidth ramp component, which is positioned approximately parallel to the terrace, electrically couples to the exposed pads. For example, the ramp component may be electrically coupled to the semiconductor dies using: microsprings, an anisotropic film, and/or solder. Consequently, the electrical contacts may have a conductive, a capacitive or, in general, a complex impedance. Furthermore, the chips and/or the ramp component may be positioned relative to each other using a ball-and-pit alignment technique. By removing the need for costly and area-consuming through-silicon vias (TSVs) in the semiconductor dies, the chip package facilitates chips to be stacked in a manner that provides high bandwidth and low cost.Type: GrantFiled: July 22, 2009Date of Patent: July 2, 2013Assignee: Oracle America, Inc.Inventors: Robert J. Drost, James G. Mitchell, David C. Douglas
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Publication number: 20120326322Abstract: A chip package includes a substrate having a positive feature, which is defined on a surface of the substrate and which protrudes above a region on the surface proximate to the positive feature. Furthermore, the chip package includes a mechanical reinforcement mechanism defined on the substrate proximate to the positive feature that increases a lateral shear strength of the positive feature relative to the substrate. In this way, the chip package may facilitate increased reliability of a multi-chip module (MCM) that includes the chip package.Type: ApplicationFiled: June 21, 2011Publication date: December 27, 2012Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Ashok V. Krishnamoorthy, Craig A. Stephen, John E. Cunningham, James G. Mitchell
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Publication number: 20120266464Abstract: A multi-level interposer plate and a multi-chip module (MCM) that includes the multi-level interposer plate are described. First surfaces and second surfaces in different regions of the multi-level interposer plate have associated, different thicknesses. Moreover, first micro-spring connectors and second micro-spring connectors are respectively disposed on the first surfaces and the second surfaces. In the MCM, a given one of the first surfaces of the multi-level interposer plate faces a bridge chip in a first layer in an array of chips in the MCM so that first connectors, disposed on the bridge chip, mechanically and electrically couple to the first micro-spring connectors. Similarly, a given one of the second surfaces of the multi-level interposer plate faces an island chip in a second layer in the array of chips so that second connectors, disposed on the island chip, mechanically and electrically couple to the second micro-spring connectors.Type: ApplicationFiled: June 13, 2012Publication date: October 25, 2012Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Eugene M. Chow, John E. Cunningham, James G. Mitchell, Ivan Shubin
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Patent number: 8218334Abstract: A multi-level interposer plate and a multi-chip module (MCM) that includes the multi-level interposer plate are described. First surfaces and second surfaces in different regions of the multi-level interposer plate have associated, different thicknesses. Moreover, first micro-spring connectors and second micro-spring connectors are respectively disposed on the first surfaces and the second surfaces. In the MCM, a given one of the first surfaces of the multi-level interposer plate faces a bridge chip in a first layer in an array of chips in the MCM so that first connectors, disposed on the bridge chip, mechanically and electrically couple to the first micro-spring connectors. Similarly, a given one of the second surfaces of the multi-level interposer plate faces an island chip in a second layer in the array of chips so that second connectors, disposed on the island chip, mechanically and electrically couple to the second micro-spring connectors.Type: GrantFiled: March 9, 2010Date of Patent: July 10, 2012Assignee: Oracle America, Inc.Inventors: Eugene M. Chow, John E. Cunningham, James G. Mitchell, Ivan Shubin
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Patent number: 8076178Abstract: Embodiments of a method for assembling a multi-chip module (MCM) are described. During this method, a fluid that includes coupling elements is applied to a surface of a base plate in the MCM. Then, at least some of the coupling elements are positioned into negative features on the surface of the base plate using fluidic assembly. Note that a given coupling element selects a given negative feature using chemical-based selection and/or geometry-based selection. Next, the fluid and excess coupling elements (which reside in regions outside of the negative features on the surface) are removed.Type: GrantFiled: September 28, 2007Date of Patent: December 13, 2011Assignee: Oracle America, Inc.Inventors: Ashok V. Krishnamoorthy, John E. Cunningham, James G. Mitchell
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Publication number: 20110281395Abstract: Embodiments of a method for assembling a multi-chip module (MCM) are described. During this method, a fluid that includes coupling elements is applied to a surface of a base plate in the MCM. Then, at least some of the coupling elements are positioned into negative features on the surface of the base plate using fluidic assembly. Note that a given coupling element selects a given negative feature using chemical-based selection and/or geometry-based selection. Next, the fluid and excess coupling elements (which reside in regions outside of the negative features on the surface) are removed.Type: ApplicationFiled: September 28, 2007Publication date: November 17, 2011Applicant: SUN MICROSYSTEMS, INC.Inventors: Ashok V. Krishnamoorthy, John E. Cunningham, James G. Mitchell
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Patent number: 8039308Abstract: Embodiments of a multi-chip module (MCM) are described. This MCM includes a first semiconductor die and a second semiconductor die, where a given semiconductor die, which can be the first semiconductor die or the second semiconductor die, includes proximity connectors proximate to a surface of the given semiconductor die. Moreover, the given semiconductor die is configured to communicate signals with the other semiconductor die via proximity communication through one or more of the proximity connectors. Furthermore, the MCM includes an alignment plate and a top plate coupled to the alignment plate. This alignment plate includes a first negative feature configured to accommodate the first semiconductor die and a second negative feature configured to accommodate the second semiconductor die, and the top plate includes a positive feature. Note that the positive feature is coupled to the first semiconductor die, and the positive feature facilitates mechanical positioning of the first semiconductor die.Type: GrantFiled: January 13, 2011Date of Patent: October 18, 2011Assignee: Oracle America, Inc.Inventors: James G. Mitchell, John E. Cunningham, Ashok V. Krishnamoorthy
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Publication number: 20110223778Abstract: A multi-level interposer plate and a multi-chip module (MCM) that includes the multi-level interposer plate are described. First surfaces and second surfaces in different regions of the multi-level interposer plate have associated, different thicknesses. Moreover, first micro-spring connectors and second micro-spring connectors are respectively disposed on the first surfaces and the second surfaces. In the MCM, a given one of the first surfaces of the multi-level interposer plate faces a bridge chip in a first layer in an array of chips in the MCM so that first connectors, disposed on the bridge chip, mechanically and electrically couple to the first micro-spring connectors. Similarly, a given one of the second surfaces of the multi-level interposer plate faces an island chip in a second layer in the array of chips so that second connectors, disposed on the island chip, mechanically and electrically couple to the second micro-spring connectors.Type: ApplicationFiled: March 9, 2010Publication date: September 15, 2011Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Eugene M. Chow, John E. Cunningham, James G. Mitchell, Ivan Shubin
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Patent number: 7961990Abstract: Embodiments of a system are described. This system includes an array of chip modules (CMs) and a baseplate, where the baseplate is configured to communicate data signals via optical communication. Moreover, the array includes first CMs mechanically coupled to first alignment features on the baseplate, and adjacent second CMs mechanically coupled to second alignment features on the baseplate. In this array, a given first CM is electrically coupled to a given set of electrical proximity connectors. Additionally, the array includes bridge components, wherein a given bridge component is electrically coupled to the second SCM and another set of electrical proximity connectors, which is electrically coupled to the set of electrical proximity connectors, thereby facilitating communication of other data signals between adjacent first CMs and second CMs via electrical proximity communication.Type: GrantFiled: December 21, 2007Date of Patent: June 14, 2011Assignee: Oracle America, Inc.Inventors: Ashok V. Krishnamoorthy, James G. Mitchell, John E. Cunningham, Brian W. O'Krafka
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Publication number: 20110111559Abstract: Embodiments of a multi-chip module (MCM) are described. This MCM includes a first semiconductor die and a second semiconductor die, where a given semiconductor die, which can be the first semiconductor die or the second semiconductor die, includes proximity connectors proximate to a surface of the given semiconductor die. Moreover, the given semiconductor die is configured to communicate signals with the other semiconductor die via proximity communication through one or more of the proximity connectors. Furthermore, the MCM includes an alignment plate and a top plate coupled to the alignment plate. This alignment plate includes a first negative feature configured to accommodate the first semiconductor die and a second negative feature configured to accommodate the second semiconductor die, and the top plate includes a positive feature. Note that the positive feature is coupled to the first semiconductor die, and the positive feature facilitates mechanical positioning of the first semiconductor die.Type: ApplicationFiled: January 13, 2011Publication date: May 12, 2011Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: James G. Mitchell, John E. Cunningham, Ashok V. Krishnamoorthy
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Patent number: 7923845Abstract: Embodiments of a semiconductor die that includes proximity connectors proximate to a first surface of the semiconductor die are described. This semiconductor die is configured to communicate signals with another semiconductor die via proximity communication through one or more of the proximity connectors. Moreover, the semiconductor die includes a positive feature coupled to a second surface of the semiconductor die that facilitates mechanical alignment of the semiconductor die with the other semiconductor die. Note that a first region around the positive feature defines a first plane, and the positive feature protrudes above the first plane.Type: GrantFiled: September 28, 2007Date of Patent: April 12, 2011Assignee: Oracle America, Inc.Inventors: Ashok V. Krishnamoorthy, John E. Cunningham, James G. Mitchell
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Patent number: 7893531Abstract: Embodiments of a multi-chip module (MCM) are described. This MCM includes a first semiconductor die and a second semiconductor die, where a given semiconductor die, which can be the first semiconductor die or the second semiconductor die, includes proximity connectors proximate to a surface of the given semiconductor die. Moreover, the given semiconductor die is configured to communicate signals with the other semiconductor die via proximity communication through one or more of the proximity connectors. Furthermore, the MCM includes an alignment plate and a top plate coupled to the alignment plate. This alignment plate includes a first negative feature configured to accommodate the first semiconductor die and a second negative feature configured to accommodate the second semiconductor die, and the top plate includes a positive feature. Note that the positive feature is coupled to the first semiconductor die, and the positive feature facilitates mechanical positioning of the first semiconductor die.Type: GrantFiled: September 28, 2007Date of Patent: February 22, 2011Assignee: Oracle America, Inc.Inventors: James G. Mitchell, John E. Cunningham, Ashok V. Krishnamoorthy
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Publication number: 20110018120Abstract: A chip package is described. This chip package includes a stack of semiconductor dies or chips that are offset from each other, thereby defining a terrace with exposed pads. A high-bandwidth ramp component, which is positioned approximately parallel to the terrace, electrically couples to the exposed pads. For example, the ramp component may be electrically coupled to the semiconductor dies using: microsprings, an anisotropic film, and/or solder. Consequently, the electrical contacts may have a conductive, a capacitive or, in general, a complex impedance. Furthermore, the chips and/or the ramp component may be positioned relative to each other using a ball-and-pit alignment technique. By removing the need for costly and area-consuming through-silicon vias (TSVs) in the semiconductor dies, the chip package facilitates chips to be stacked in a manner that provides high bandwidth and low cost.Type: ApplicationFiled: July 22, 2009Publication date: January 27, 2011Applicant: SUN MICROSYSTEMS, INC.Inventors: Robert J. Drost, James G. Mitchell, David C. Douglas
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Publication number: 20100266240Abstract: Embodiments of a system are described. This system includes an array of chip modules (CMs) and a baseplate, where the baseplate is configured to communicate data signals via optical communication. Moreover, the array includes first CMs mechanically coupled to first alignment features on the baseplate, and adjacent second CMs mechanically coupled to second alignment features on the baseplate. In this array, a given first CM is electrically coupled to a given set of electrical proximity connectors. Additionally, the array includes bridge components, wherein a given bridge component is electrically coupled to the second SCM and another set of electrical proximity connectors, which is electrically coupled to the set of electrical proximity connectors, thereby facilitating communication of other data signals between adjacent first CMs and second CMs via electrical proximity communication.Type: ApplicationFiled: December 21, 2007Publication date: October 21, 2010Applicant: SUN MICROSYSTEMS, INC.Inventors: Ashok V. Krishnamoorthy, James G. Mitchell, John E. Cunningham, Brian W. O'Krafka
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Publication number: 20090085233Abstract: Embodiments of a semiconductor die that includes proximity connectors proximate to a first surface of the semiconductor die are described. This semiconductor die is configured to communicate signals with another semiconductor die via proximity communication through one or more of the proximity connectors. Moreover, the semiconductor die includes a positive feature coupled to a second surface of the semiconductor die that facilitates mechanical alignment of the semiconductor die with the other semiconductor die. Note that a first region around the positive feature defines a first plane, and the positive feature protrudes above the first plane.Type: ApplicationFiled: September 28, 2007Publication date: April 2, 2009Applicant: SUN MICROSYSTEMS, INC.Inventors: Ashok V. Krishnamoorthy, John E. Cunningham, James G. Mitchell
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Publication number: 20090085183Abstract: Embodiments of a multi-chip module (MCM) are described. This MCM includes a first semiconductor die and a second semiconductor die, where a given semiconductor die, which can be the first semiconductor die or the second semiconductor die, includes proximity connectors proximate to a surface of the given semiconductor die. Moreover, the given semiconductor die is configured to communicate signals with the other semiconductor die via proximity communication through one or more of the proximity connectors. Furthermore, the MCM includes an alignment plate and a top plate coupled to the alignment plate. This alignment plate includes a first negative feature configured to accommodate the first semiconductor die and a second negative feature configured to accommodate the second semiconductor die, and the top plate includes a positive feature. Note that the positive feature is coupled to the first semiconductor die, and the positive feature facilitates mechanical positioning of the first semiconductor die.Type: ApplicationFiled: September 28, 2007Publication date: April 2, 2009Applicant: SUN MICROSYSTEMS, INC.Inventors: James G. Mitchell, John E. Cunningham, Ashok V. Krishnamoorthy
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Patent number: 7252396Abstract: A retroreflective article having at least one valve is disclosed. Each valve may include a channel extending from a first major surface to a second major surface of the retroreflective material, and at least one movable member proximate the channel. The at least one movable member is movable between a closed position and an open position. When in the closed position, the at least one movable member obstructs at least a portion of the channel. A method of making a retroreflective article having at least one valve is also disclosed.Type: GrantFiled: November 16, 2004Date of Patent: August 7, 2007Assignee: 3M Innovative Properties CompanyInventors: Paul E. Marecki, James G. Mitchell
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Patent number: 5787251Abstract: The present invention provides an elegant and simple way to provide mechanisms for invocation of objects by client applications and for argument passing between client applications and object implementations, without the client application or the operating system knowing the details of how these mechanisms work. Moreover, these mechanisms functions in a distributed computer environment with similar ease and efficiency, where client applications may be on one computer node and object implementations on another. The invention includes a new type of object, termed a "spring object," which includes a method table, a subcontract mechanism and a data structure which represents the subcontract's local private state.Type: GrantFiled: November 18, 1996Date of Patent: July 28, 1998Assignee: Sun Microsystems, Inc.Inventors: Graham Hamilton, Michael L. Powell, James G. Mitchell, Jonathan J. Gibbons