Patents by Inventor Amit Chatterjee
Amit 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: 11078119Abstract: The present disclosure relates to a composite of sintered mullite reinforced corundum granules and a method for its preparation. The composite comprises mullite and corundum in an interlocking microstructure. The process for preparing the composite involves the steps of admixing the raw materials followed by sintering to obtain the composite comprising sintered mullite reinforced corundum granules.Type: GrantFiled: June 5, 2018Date of Patent: August 3, 2021Assignee: ASHAPURA MINECHEM LTD.Inventors: Chetan Navnitlal Shah, Manan Chetan Shah, Amit Chatterjee, Anurag Tilak
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Publication number: 20180282223Abstract: The present disclosure relates to a composite of sintered mullite reinforced corundum granules and a method for its preparation. The composite comprises mullite and corundum in an interlocking microstructure. The process for preparing the composite involves the steps of admixing the raw materials followed by sintering to obtain the composite comprising sintered mullite reinforced corundum granules.Type: ApplicationFiled: June 5, 2018Publication date: October 4, 2018Inventors: Chetan Navnitlal Shah, Manan Chetan Shah, Amit Chatterjee, Anurag Tilak
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Publication number: 20170073275Abstract: The present disclosure relates to a composite of sintered mullite reinforced corundum granules and a method for its preparation. The composite comprises mullite and corundum in an interlocking microstructure. The process for preparing the composite involves the steps of admixing the raw materials followed by sintering to obtain the composite comprising sintered mullite reinforced corundum granules.Type: ApplicationFiled: October 19, 2015Publication date: March 16, 2017Inventors: Chetan Navnitlal Shah, Manan Chetan Shah, Amit Chatterjee, Anurag Tilak
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Patent number: 9583333Abstract: Embodiments of the present invention generally provide methods for forming a silicon nitride layer on a substrate. In one embodiment, a method of forming a silicon nitride layer using remote plasma chemical vapor deposition (CVD) at a temperature that is less than 300 degrees Celsius is disclosed. The precursors for the remote plasma CVD process include tris(dimethylamino)silane (TRIS), dichlorosilane (DCS), trisilylamine (TSA), bis-t-butylaminosilane (BTBAS), hexachlorodisilane (HCDS) or hexamethylcyclotrisilazane (HMCTZ).Type: GrantFiled: October 22, 2014Date of Patent: February 28, 2017Assignee: APPLIED MATERIALS, INC.Inventors: Amit Chatterjee, Abhijit Basu Mallick, Nitin K. Ingle
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Patent number: 9257330Abstract: Methods of depositing thin, low dielectric constant layers that are effective diffusion barriers on metal interconnects of semiconductor circuits are described. A self-assembled monolayer (SAM) of molecules each having a head moiety and a tail moiety are deposited on the metal. The SAM molecules self-align, wherein the head moiety is formulated to selectively bond to the metal layer leaving the tail moiety disposed at a distal end of the molecule. A dielectric layer is subsequently deposited on the SAM, chemically bonding to the tail moiety of the SAM molecules.Type: GrantFiled: September 11, 2014Date of Patent: February 9, 2016Assignee: Applied Materials, Inc.Inventors: Amit Chatterjee, Geetika Bajaj, Pramit Manna, He Ren, Tapash Chakraborty, Srinivas D. Nemani, Mehul Naik, Robert Jan visser, Abhijit Basu Mallick
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Patent number: 9219006Abstract: Embodiments of the present invention generally relate to methods for forming a flowable carbon-containing film on a substrate. In one embodiment, an oxygen-containing gas is flowed into a remote plasma region to produce oxygen-containing plasma effluents, and a carbon-containing gas is combined with the oxygen-containing plasma effluents in a substrate processing region which contains the substrate. A carbon-containing film is formed in trenches which are formed on the substrate and a low K dielectric material is deposited on the carbon-containing film in the trenches. The carbon-containing film is decomposed by an UV treatment and airgaps are formed in the trenches under the low K dielectric material.Type: GrantFiled: January 13, 2014Date of Patent: December 22, 2015Assignee: APPLIED MATERIALS, INC.Inventor: Amit Chatterjee
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Publication number: 20150147879Abstract: Methods of depositing thin, low dielectric constant layers that are effective diffusion barriers on metal interconnects of semiconductor circuits are described. A self-assembled monolayer (SAM) of molecules each having a head moiety and a tail moiety are deposited on the metal. The SAM molecules self-align, wherein the head moiety is formulated to selectively bond to the metal layer leaving the tail moiety disposed at a distal end of the molecule. A dielectric layer is subsequently deposited on the SAM, chemically bonding to the tail moiety of the SAM molecules.Type: ApplicationFiled: September 11, 2014Publication date: May 28, 2015Inventors: Amit Chatterjee, Geetika Bajaj, Pramit Manna, He Ren, Tapash Chakraborty, Srinivas D. Nemani, Mehul Naik, Robert Jan visser, Abhijit Basu Mallick
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Patent number: 8906454Abstract: Methods for depositing metal-polymer composite materials atop a substrate are provided herein. In some embodiments, a method of depositing a metal-polymer composite material atop a substrate disposed in a hot wire chemical vapor deposition (HWCVD) chamber may include flowing a current through a plurality of filaments disposed in the HWCVD chamber, the filaments comprising a metal to be deposited atop a substrate; providing a process gas comprising an initiator and a monomer to the HWCVD chamber; and depositing a metal-polymer composite material on the substrate using species decomposed from the process gas and metal atoms ejected from the plurality of filaments.Type: GrantFiled: September 10, 2012Date of Patent: December 9, 2014Assignee: Applied Materials, Inc.Inventors: Sukti Chatterjee, Amit Chatterjee
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Patent number: 8889566Abstract: A method of forming a dielectric layer is described. The method deposits a silicon-containing film by chemical vapor deposition using a local plasma. The silicon-containing film is flowable during deposition at low substrate temperature. A silicon precursor (e.g. a silylamine, higher order silane or halogenated silane) is delivered to the substrate processing region and excited in a local plasma. A second plasma vapor or gas is combined with the silicon precursor in the substrate processing region and may include ammonia, nitrogen (N2), argon, hydrogen (H2) and/or oxygen (O2). The equipment configurations disclosed herein in combination with these vapor/gas combinations have been found to result in flowable deposition at substrate temperatures below or about 200° C. when a local plasma is excited using relatively low power.Type: GrantFiled: November 5, 2012Date of Patent: November 18, 2014Assignee: Applied Materials, Inc.Inventors: Amit Chatterjee, Abhijit Basu Mallick, Nitin K. Ingle, Brian Underwood, Kiran V. Thadani, Xiaolin Chen, Abhishek Dube, Jingmei Liang
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Publication number: 20140073144Abstract: A method of forming a dielectric layer is described. The method deposits a silicon-containing film by chemical vapor deposition using a local plasma. The silicon-containing film is flowable during deposition at low substrate temperature. A silicon precursor (e.g. a silylamine, higher order silane or halogenated silane) is delivered to the substrate processing region and excited in a local plasma. A second plasma vapor or gas is combined with the silicon precursor in the substrate processing region and may include ammonia, nitrogen (N2), argon, hydrogen (H2) and/or oxygen (O2). The equipment configurations disclosed herein in combination with these vapor/gas combinations have been found to result in flowable deposition at substrate temperatures below or about 200° C. when a local plasma is excited using relatively low power.Type: ApplicationFiled: November 5, 2012Publication date: March 13, 2014Inventors: Amit Chatterjee, Abhijit Basu Mallick, Nitin K. Ingle, Brian Underwood, Kiran V. Thadani, Xiaolin Chen, Abhishek Dube, Jingmei Liang
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Patent number: 8465903Abstract: Methods for forming photoresists sensitive to radiation on a substrate are provided. Described are chemical vapor deposition methods of forming films (e.g., silicon-containing films) as photoresists using a plasma which may be exposed to radiation to form a pattern. The deposition methods utilize precursors with cross-linkable moieties that will cross-link upon exposure to radiation. Radiation may be carried out in the with or without the presence of oxygen. Exposed or unexposed areas may then be developed in an aqueous base developer.Type: GrantFiled: October 6, 2011Date of Patent: June 18, 2013Assignee: Applied Materials, Inc.Inventors: Timothy W. Weidman, Timothy Michaelson, Paul Deaton, Nitin K. Ingle, Abhijit Basu Mallick, Amit Chatterjee
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Patent number: 8388787Abstract: The invention relates to a method of making a composite sheet. A plurality of layers is first assembled, each layer being comprised of an untreated, unidirectional array of strands. The assembled layers are then placed adjacent one another to form an assembled sheet, with adjacent layers being in a non-parallel orientation, and without any of the layers having been treated with a matrix or binding component. The assembled sheet is then impregnated with a matrix component, which comprises a binding component and may also comprise a radiation-absorbing component.Type: GrantFiled: July 13, 2010Date of Patent: March 5, 2013Assignee: Gentex CorporationInventors: Ramesh Kaushal, Leonard Peter Frieder, John LaJesse, Amit Chatterjee
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Publication number: 20120088193Abstract: Methods for forming photoresists sensitive to radiation on a substrate are provided. Described are chemical vapor deposition methods of forming films (e.g., silicon-containing films) as photoresists using a plasma which may be exposed to radiation to form a pattern. The deposition methods utilize precursors with cross-linkable moieties that will cross-link upon exposure to radiation. Radiation may be carried out in the with or without the presence of oxygen. Exposed or unexposed areas may then be developed in an aqueous base developer.Type: ApplicationFiled: October 6, 2011Publication date: April 12, 2012Applicant: Applied Materials, Inc.Inventors: Timothy W. Weidman, Timothy Michaelson, Paul Deaton, Nitin K. Ingle, Abhijit Basu Mallick, Amit Chatterjee
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Publication number: 20110119113Abstract: A centralized emission and energy management system is implemented via a server that is accessible to a client organization. In response to a request to recommend best practices for an organizational unit to reduce environmental impact or energy usage, the system selects relevant best practices based on reduction goals and the organizational unit's particular industry. Based on attribute values for the relevant best practices and the organizational unit, the system filters/ranks the relevant best practices to form recommended best practices. The system may transmit a forecast of energy savings, cost impacts, and environmental impacts over an implementation time period for a draft procedure created from a recommended best practice. The system may generate a request for proposal (RFP) including an approved procedure to a vendor. The system may maintain ratings and feedbacks on the approved procedure and the vendor.Type: ApplicationFiled: August 20, 2010Publication date: May 19, 2011Applicant: HARA SOFTWARE, INC.Inventors: Amit Chatterjee, Udo Waibel, Jeffrey S. Risberg, James J. Caputo
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Publication number: 20110011520Abstract: The invention relates to a method of making a composite sheet. A plurality of layers is first assembled, each layer being comprised of an untreated, unidirectional array of strands. The assembled layers are then placed adjacent one another to form an assembled sheet, with adjacent layers being in a non-parallel orientation, and without any of the layers having been treated with a matrix or binding component. The assembled sheet is then impregnated with a matrix component, which comprises a binding component and may also comprise a radiation-absorbing component.Type: ApplicationFiled: July 13, 2010Publication date: January 20, 2011Applicant: Gentex CorporationInventors: Ramesh Kaushal, Leonard Peter Frieder, John LaJesse, Amit Chatterjee
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Publication number: 20080298366Abstract: Procedures for agnostically redirecting WAN link communications for WAN link throughput optimization are described. In an example, a WAN communication, targeted to a remote resource, is redirected to a local port proxy. The local port proxy may enforce WAN link policy on the communication to optimize communication flows occurring over the physical WAN link thereby increasing the relative efficiency of the physical WAN link. A remote port proxy may be included for forwarding the communication to the target remote resource via a separate communication connection.Type: ApplicationFiled: May 31, 2007Publication date: December 4, 2008Applicant: Microsoft CorporationInventors: Madan Mohan R. Appiah, Amit Chatterjee, Samir Jain
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Publication number: 20080031141Abstract: Methods, systems, and computer program products for monitoring tunneled Internet protocol (IP) traffic on a high bandwidth IP network are disclosed. According to one method, a copy of a tunneled IP packet traversing an IP communications network is generated. The packet may include a payload having tunneled protocol address information. The tunneled protocol address information and the payload portion of the copied IP packet is read. The packet is distributed, using the tunneled protocol address information, to a function for providing at least one of packet classification and network monitoring service for the packet.Type: ApplicationFiled: August 1, 2007Publication date: February 7, 2008Inventors: Yoogin Lean, Philippe Besset, William Salvin, Amit Chatterjee
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Patent number: 7012616Abstract: Displaying images having pixels thereof that are meant to be transparent is disclosed. In one embodiment, a method includes a first stage and a second stage. The first stage is performed once, to transform the image and generate a mask thereof. The second stage is performed each time the image is to be displayed, to copy the transformed image and the mask onto the display. In one embodiment, the transparent image is shrunk and/or stretched when displayed. The cases of animated images and dithering for alpha blending are also disclosed and covered by the invention.Type: GrantFiled: March 31, 2000Date of Patent: March 14, 2006Assignee: Microsoft CorporationInventor: Amit Chatterjee
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Patent number: 6692586Abstract: This invention relates to a high temperature melting composition and a method of using the composition for brazing high temperature niobium-based substrates, such as niobium-based refractory metal-intermetallic compositions (RMIC), including but not restricted to niobium-silicide composite alloys. The high temperature melting composition can include one or more alloys. The alloys include a base element selected from titanium, tantalum, niobium, hafnium, silicon, and germanium. The alloys also include at least one secondary element that is different from the base element. The secondary element can be selected from chromium, aluminum, niobium, boron, silicon, germanium and mixtures thereof. When two or more alloys are included in the composition, it is preferable, but not required, to select at least one lower melting alloy and at least one higher melting alloy. The composition is preferably a homogeneous mixture of the two or more alloys combined in powder form.Type: GrantFiled: May 23, 2001Date of Patent: February 17, 2004Assignee: Rolls-Royce CorporationInventors: Raymond R. Xu, Amit Chatterjee
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Patent number: 6683618Abstract: Operating system enhancements that enable an application program to create and perform graphics operations on device-independent bitmaps (DIBs) efficiently. The enhancements are in the form of functions that return to the application program a handle to the DIB and a pointer to the location of the DIB in memory. With the handle, the application program can use the capabilities of the operating system to perform graphics operations on the DIB. With the pointer, the application program can use its own drawing capabilities and address the DIB directly. The operating system enhancements also streamline the design and content of graphics drivers such as display drivers by placing basic graphics functions in a graphics engine that communicates with the graphics driver. Simple graphics operations are passed from the graphics driver to the graphics engine, allowing the driver to be limited to more complex operations that utilize special characteristics of graphics hardware associated with the driver.Type: GrantFiled: December 13, 1994Date of Patent: January 27, 2004Assignee: Microsoft CorporationInventors: Stuart Raymond Patrick, Amit Chatterjee