Patents by Inventor Raschid J. Bezama
Raschid J. Bezama 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: 7708856Abstract: A method to control the post sinter distortion of hot pressing sintered multilayer ceramic laminate by placing a non-densifying structure in the green ceramic laminate prior to sintering. One or more non-densifying structures are placed on one or more ceramic greensheets which are then stacked and laminated to form a green ceramic laminate. The laminate is then sintered and the non-densifying structure will control the dimensions of the hot pressed multilayer ceramic substrate. The method can be used to control post sinter dimensions in MLC substrates manufactured as either single or multi-up substrates by placing the non-densifying structure in the kerf area between the individual product ups prior to sintering.Type: GrantFiled: December 5, 2003Date of Patent: May 4, 2010Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J. Bezama
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Patent number: 7684194Abstract: Systems and methods for cooling electronic devices via enhanced thermal conduction in the gap separating an electronic device from a heat sink are provided. In one embodiment, a system for cooling an electronic device comprises: a heat sink spaced from the integrated circuit by a gap; and a bubbler and an atomizer configured to feed a mixture comprising an atomized liquid and a carrier gas to the gap.Type: GrantFiled: June 4, 2008Date of Patent: March 23, 2010Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J. Bezama, David L. Gardell, James N. Humenik
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Publication number: 20090303684Abstract: Systems and methods for cooling electronic devices via enhanced thermal conduction in the gap separating an electronic device from a heat sink are provided. In one embodiment, a system for cooling an electronic device comprises: a heat sink spaced from the integrated circuit by a gap; and a bubbler and an atomizer configured to feed a mixture comprising an atomized liquid and a carrier gas to the gap.Type: ApplicationFiled: June 4, 2008Publication date: December 10, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Govindarajan Natarajan, Raschid J. Bezama, David L. Gardell, James N. Humenik
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Publication number: 20090175606Abstract: An article supports a workpiece during thermal processing. At least three elongated support members, e.g., support pins, extend upwardly from an element such as support arms for supporting the workpiece. Each of the support members includes a first portion adjacent to the workpiece. A second portion extends downwardly from the first portion. The first portion can have a thermal response faster than the thermal response of the workpiece and the second portion can have a slower thermal response. A removable element may be mounted to the support member for adjusting the thermal response of the support member. With removable elements, the support members can be adjusted to cause no net transfer of heat to or from the workpiece.Type: ApplicationFiled: January 8, 2008Publication date: July 9, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, Lewis S. Goldmann, Donald R. Wall
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Patent number: 7536870Abstract: A distribution apparatus, system and method for thermal control whereby a plate of a manifold assembly has predetermined surface features positioned on specific locations on a surface thereof for enhancing the cooling capabilities of the assembly. The predetermined surface features of the plate delay a velocity decay of a fluid impinging the surface of the plate, while also increase the surface area of the plate exposed to the impinging liquid, which in turn, maximize both the reliability and thermal performance of the overall thermal system at a given maximum operating pressure.Type: GrantFiled: March 30, 2006Date of Patent: May 26, 2009Assignee: International Business Machines CorporationInventors: Raschid J. Bezama, Govindarajan Natarajan
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Publication number: 20090109628Abstract: Integrated circuit chip cooling methods and systems are disclosed. A method for cooling an integrated circuit chip may comprise: providing a cooling mechanism; positioning an interface medium between the cooling mechanism and the integrated circuit chip; and interfacing the cooling mechanism and the integrated circuit chip through the interface medium; wherein at least one of the cooling mechanism, the integrated circuit chip, or the interface medium includes a convex portion on an interface surface thereof.Type: ApplicationFiled: October 30, 2007Publication date: April 30, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, James N. Humenik, Sushumna Iruvanti, Govindarajan Natarajan
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Publication number: 20090095444Abstract: Low-pressure drop thermal assemblies, systems and methods of making low-pressure drop thermal assemblies for use in high power flux situations. A manifold body is attached to a distributor to form a subassembly. This subassembly is in communication with a substrate surface, which has a semiconductor device in need of thermal management thereon. An enclosed cavity is formed between the target substrate surface and the subassembly, and a seal of the cavity protects critical components residing on the active surface of the semiconductor device. The distributor includes a distributed liquid impingement microjet inlet array isolated from and parallel with a distributed microjet drain array for impinging cooling fluid and removing spent heated fluid in a direction orthogonal to a target surface for maximizing the heat transfer rate, and thereby providing high cooling flux capabilities while enabling low-pressure drops.Type: ApplicationFiled: December 18, 2008Publication date: April 16, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, Govindarajan Natarajan, Kamal K. Sikka, Hilton T. Toy
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Patent number: 7516776Abstract: Low-pressure drop thermal assemblies, systems and methods of making low-pressure drop thermal assemblies for use in high power flux situations. A manifold body is attached to a distributor to form a subassembly. This subassembly is in communication with a substrate surface, which has a semiconductor device in need of thermal management thereon. An enclosed cavity is formed between the target substrate surface and the subassembly, and a seal of the cavity protects critical components residing on the active surface of the semiconductor device. The distributor includes a distributed liquid impingement microjet inlet array isolated from and parallel with a distributed microjet drain array for impinging cooling fluid and removing spent heated fluid in a direction orthogonal to a target surface for maximizing the heat transfer rate, and thereby providing high cooling flux capabilities while enabling low-pressure drops.Type: GrantFiled: May 19, 2005Date of Patent: April 14, 2009Assignee: International Business Machines CorporationInventors: Raschid J. Bezama, Govindarajan Natarajan, Kamal K. Sikka, Hilton T. Toy
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Publication number: 20080284993Abstract: A wafer chuck assembly includes a first chuck section configured to hold a semiconductor wafer on a support surface thereof, and a second chuck section removably attached to the first chuck section. The first chuck section has a gap therein, the gap located adjacent an outer edge of the wafer, and the gap containing a volume of immersion lithography fluid therein. A fluid circulation path is configured within the first chuck section so as to facilitate the radial outward movement of the immersion lithography fluid in the gap, thereby maintaining a meniscus of the immersion lithography fluid at a selected height with respect to a top surface of the semiconductor wafer.Type: ApplicationFiled: July 30, 2008Publication date: November 20, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dmitriy Shneyder, Raschid J. Bezama, Dario L. Goldfarb, Kafal Lai
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Publication number: 20080282720Abstract: A distribution apparatus, system and method for thermal control whereby a plate of a manifold assembly has predetermined surface features positioned on specific locations on a surface thereof for enhancing the cooling capabilities of the assembly. The predetermined surface features of the plate delay a velocity decay of a fluid impinging the surface of the plate, while also increase the surface area of the plate exposed to the impinging liquid, which in turn, maximize both the reliability and thermal performance of the overall thermal system at a given maximum operating pressure.Type: ApplicationFiled: July 30, 2008Publication date: November 20, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, Govindarajan Natarajan
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Publication number: 20080284994Abstract: A method for reducing contamination in immersion lithography includes retaining a semiconductor wafer on a support surface of a wafer chuck, the wafer chuck having a gap therein, the gap located adjacent an outer edge of the wafer, and the gap containing a volume of immersion lithography fluid therein; and providing a fluid circulation path within the wafer chuck so as to facilitate the radial outward movement of the immersion lithography fluid in the gap, thereby maintaining a meniscus of the immersion lithography fluid at a selected height with respect to a top surface of the semiconductor wafer.Type: ApplicationFiled: July 30, 2008Publication date: November 20, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dmitriy Shneyder, Raschid J. Bezama, Dario L. Goldfarb, Kafal Lai
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Patent number: 7446859Abstract: An apparatus for reducing contamination in immersion lithography includes a wafer chuck assembly having a wafer chuck configured to hold a semiconductor wafer on a support surface thereof. The wafer chuck has a gap therein, the gap located adjacent an outer edge of the wafer, and the gap containing a volume of immersion lithography fluid therein. A fluid circulation path is configured within the wafer chuck so as to facilitate the radial outward movement of the immersion lithography fluid in the gap, thereby maintaining a meniscus of the immersion lithography fluid at a selected height with respect to a top surface of the semiconductor wafer.Type: GrantFiled: January 27, 2006Date of Patent: November 4, 2008Assignee: International Business Machines CorporationInventors: Dmitriy Shneyder, Raschid J. Bezama, Dario L. Goldfarb, Kafai Lai
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Patent number: 7407883Abstract: An electronic package and method for forming such package that expands the current capability of lines and/or reducing line resistance for packages with a given feature dimension while relaxing feature tolerances. The methods and structures include electrical wirings having regions of larger wire cross-sectional areas in locations where the package must supply higher current distribution to the electronic devices and/or where signal lines need lower electrical resistance. These larger wire cross-sectional areas are vertically extended conductors applied to either the entire conductor or portions of the conductor.Type: GrantFiled: September 28, 2006Date of Patent: August 5, 2008Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J Bezama
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Publication number: 20080179192Abstract: Disclosed are embodiments of an electroplating system and an associated electroplating method that allow for depositing of metal alloys with a uniform plate thickness and with the means to alter dynamically the alloy composition. Specifically, by using multiple anodes, each with different types of soluble metals, the system and method avoid the need for periodic plating bath replacement and also allow the ratio of metals within the deposited alloy to be selectively varied by applying different voltages to the different metals. The system and method further avoids the uneven current density and potential distribution and, thus, the non-uniform plating thicknesses exhibited by prior art methods by selectively varying the shape and placement of the anodes within the plating bath. Additionally, the system and method allows for fine tuning of the plating thickness by using electrically insulating selectively placed prescribed baffles.Type: ApplicationFiled: January 26, 2007Publication date: July 31, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Charles L. Arvin, Raschid J. Bezama, Harry D. Cox, Krystyna W. Semkow
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Patent number: 7332805Abstract: An electronic package and method for forming such package that expands the current capability of lines and/or reducing line resistance for packages with a given feature dimension while relaxing feature tolerances. The methods and structures include electrical wirings having regions of larger wire cross-sectional areas in locations where the package must supply higher current distribution to the electronic devices and/or where signal lines need lower electrical resistance. These larger wire cross-sectional areas are vertically extended conductors applied to either the entire conductor or portions of the conductor.Type: GrantFiled: January 6, 2004Date of Patent: February 19, 2008Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J Bezama
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Patent number: 7258537Abstract: An apparatus for flattening sintered ceramic electronic packaging substrates having opposing faces with undesired camber interleaves the substrates with spacers. At least one heating zone includes a heat transfer medium movable toward and away from the stack of interleaved ceramic substrates and spacers to apply a desired rate of heat by direct contact with or close proximity to sides of the stack. A plunger applies pressure to the stack in a direction normal to the faces of the substrates. At least one cooling zone includes a heat transfer medium movable toward and away from the stack to remove heat introduced in the heating zone by direct contact with or close proximity to sides of the stack. A reducing gas supply is operatively connected to the at least one heating zone and at least one cooling zone to supply gas to maintain a controlled reducing atmosphere within the apparatus.Type: GrantFiled: September 16, 2004Date of Patent: August 21, 2007Assignee: International Business Machines CorporationInventors: Raschid J Bezama, Renee L Weisman
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Patent number: 7255153Abstract: A manifold apparatus, system and method for thermally controlling a substrate whereby a manifold body having a microjet array and a drain array traversing there-through in a direction orthogonal to a substrate surface and parallel to each other is attached to the substrate surface for heating or cooling thereof. A cavity of the manifold body resides over the substrate surface such that liquid is emitted from the liquid microjets into the cavity for contact with the substrate surface, while the drains orthogonally remove spent liquid from the cavity. The manifold body is designed and configured into a plurality of cooling cells, whereby each cooling cell has a liquid microjet surrounded by at least three drains for preventing interactions between adjacent liquid microjets within adjacent cooling cells. Gas microjets may also traverse through the manifold body to form an atomized liquid spray for contact with the substrate surface.Type: GrantFiled: May 25, 2005Date of Patent: August 14, 2007Assignee: International Business Machines CorporationInventors: Daniel G. Berger, Raschid J. Bezama, Lester W. Herron, Bruno Michel, Govindarajan Natarajan
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Patent number: 7111797Abstract: A fluid particle cleaner and method are disclosed. The invention provides a partition to a side of a fluid nozzle to form: a central cavity configured to define the fluid departing the surface into a central cavity vortex; and a side cavity adjacent the central cavity to define fluid escaping from the central cavity into a side vortex. The vortices interact in a counter-rotating and stationary fashion. The strong and smaller central vortex creates an upward air velocity field that forces any airborne particle to move away from the surface. The side vortex is designed to: connect the central vortex velocity field to the vacuum flow and allow airborne particles to remain suspended until they reach the vacuum flow; and create a decelerating field for high speed particles traveling parallel (horizontally) to the surface to increase the residence time in the central vortex with positive vertical velocity.Type: GrantFiled: March 22, 2004Date of Patent: September 26, 2006Assignee: International Business Machines CorporationInventors: Raschid J. Bezama, Nike O. Medahunsi
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Patent number: 7107901Abstract: A method and apparatus for the rapid cooling of screen masks used in the fabrication of semiconductor components is provided. The method and apparatus use a specially designed cooling plate which is contacted with a mask frame holding the screening mask. After a heated cleaning step which cleans the mask frame and screening mask of metal paste used in the screening operation, the cooling plate having one or more concave lower surfaces contacts the upper surfaces of the mask frame and bends the mask frame in the shape of the concave surfaces. This ensures intimate contact between the cooling plate and mask frame and enhances the thermal efficiency of the cooling step.Type: GrantFiled: October 14, 2003Date of Patent: September 19, 2006Assignee: International Business Machines CorporationInventors: Raschid J Bezama, William W Harkins, David C Long, Jason S Miller, Christopher E Pepe, Ronald M Rothkranz, John A Rudy, Benjamin P Tongue
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Patent number: 6955777Abstract: A plate for use in mixing and testing materials in the pharmaceutical industry is formed by a method in which apertures in a set of greensheets are formed by a material removal process, at least some of the apertures being filled with a fugitive material that escapes during sintering.Type: GrantFiled: January 7, 2003Date of Patent: October 18, 2005Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Umar Ahmad, Raschid J. Bezama, James N. Humenik, John U. Knickerbocker, Rao V. Vallabhaneni