Patents by Inventor Dipankar Pramanik
Dipankar Pramanik 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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Publication number: 20180104353Abstract: The present invention relates to ligand-targeted molecules and ligand drug conjugates (LDCs) comprising a ligand connected to a functional group, which is connected to a linker, with in turn is bonded to a drug. The LDCs of the present invention also comprise platinum coordination complex wherein the platinum is connected to the linker through monocarboxylato and O—*Pt coordinate bonds. The present invention also relates to methods for preparing these ligand drug conjugates. The present invention further relates to methods for the treatment of tumours using the ligand drug conjugates of the present invention.Type: ApplicationFiled: December 15, 2017Publication date: April 19, 2018Applicant: INVICTUS ONCOLOGY PVT. LTD.Inventors: Shiladitya SENGUPTA, Sazid HUSSAIN, Dipankar PRAMANIK, Monideepa ROY, Seikh Samad HOSSAIN
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Patent number: 9884123Abstract: The present invention relates to ligand-targeted molecules and ligand drug conjugates (LDCs) comprising a ligand connected to a functional group, which is connected to a linker, which in turn is bonded to a drug. The LDCs of the present invention also comprise platinum coordination complex wherein the platinum is connected to the linker through monocarboxylato and O?Pt coordinate bonds. The present invention also relates to methods for preparing these ligand drug conjugates. The present invention further relates to methods for the treatment of tumours using the ligand drug conjugates of the present invention.Type: GrantFiled: January 3, 2013Date of Patent: February 6, 2018Assignee: INVICTUS ONCOLOGY PVT. LTD.Inventors: Shiladitya Sengupta, Sazid Hussain, Dipankar Pramanik, Monideepa Roy, Seikh Samad Hossain
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Patent number: 9593414Abstract: Amorphous silicon (a-Si) is hydrogenated for use as a dielectric (e.g., an interlayer dielectric) for superconducting electronics. A hydrogenated a-Si layer is formed on a substrate by CVD or sputtering. The hydrogen may be integrated during or after the a-Si deposition. After the layer is formed, it is first annealed in an environment of high hydrogen chemical potential and subsequently annealed in an environment of low hydrogen chemical potential. Optionally, the a-Si (or an H-permeable overlayer, if added) may be capped with a hydrogen barrier before removing the substrate from the environment of low hydrogen chemical potential.Type: GrantFiled: December 31, 2013Date of Patent: March 14, 2017Assignees: Intermolecular, Inc., Northrop Grumman Systems CorporationInventors: Sergey Barabash, Chris Kirby, Dipankar Pramanik, Andrew Steinbach
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Patent number: 9472423Abstract: A method for suppressing the formation of leakage-promoting defects in a crystal lattice following dopant implantation in the lattice. The process provides a compressive layer of atoms, these atoms having a size greater than that of the lattice member atoms. The lattice is then annealed for a time sufficient for interstitial defect atoms to be emitted from the compressive layer, and in that manner energetically stable defects are formed in the lattice at a distance from the compressive layer.Type: GrantFiled: October 30, 2007Date of Patent: October 18, 2016Assignee: SYNOPSYS, INC.Inventors: Victor Moroz, Dipankar Pramanik
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Patent number: 9465897Abstract: Roughly described, a method for approximating stress-induced mobility enhancement in a channel region in an integrated circuit layout, including approximating the stress at each of a plurality of sample points in the channel, converting the stress approximation at each of the sample points to a respective mobility enhancement value, and averaging the mobility enhancement values at all the sample points. The method enables integrated circuit stress analysis that takes into account stresses contributed by multiple stress generation mechanisms, stresses having vector components other than along the length of the channel, and stress contributions (including mitigations) due to the presence of other structures in the neighborhood of the channel region under study, other than the nearest STI interfaces. The method also enables stress analysis of large layout regions and even full-chip layouts, without incurring the computation costs of a full TCAD simulation.Type: GrantFiled: December 23, 2013Date of Patent: October 11, 2016Assignee: SYNOPSYS, INC.Inventors: Victor Moroz, Dipankar Pramanik
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Patent number: 9455073Abstract: Provided are superconducting circuits, methods of operating these superconducting circuits, and methods of determining processing conditions for operating these superconducting circuits. A superconducting circuit includes a superconducting element, a conducting element, and a dielectric element disposed between the superconducting element and the conducting element. The conducting element may be another superconducting element, a resonating element, or a conducting casing. During operation of the superconducting element a direct current (DC) voltage is applied between the superconducting element and the conducting element. This application of the DC voltage reduces average microwave absorption of the dielectric element. In some embodiments, when the DC voltage is first applied, the microwave absorption may initially rise and then fall below the no-voltage absorption level.Type: GrantFiled: April 23, 2014Date of Patent: September 27, 2016Assignees: Intermolecular, Inc., Northrop Grumman Systems CorporationInventors: Sergey Barabash, Dipankar Pramanik, Andrew Steinbach, Chris Kirby
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Patent number: 9431569Abstract: Embodiments provided herein describe methods for forming cadmium-manganese-telluride (CMT), such as for use in photovoltaic devices. A substrate including a material with a zinc blend crystalline structure is provided. CMT is formed above the substrate. During the formation of the CMT, cation-rich processing conditions are maintained. The resulting CMT may be more readily provided with p-type dopants when compared to conventionally-formed CMT.Type: GrantFiled: December 26, 2013Date of Patent: August 30, 2016Assignee: First Solar, Inc.Inventors: Sergey Barabash, Amir Bayati, Dipankar Pramanik, Zhi-Wen Sun
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Publication number: 20160181091Abstract: Embodiments provided herein describe systems and methods for forming ferroelectric materials. A trench body may be provided. A trench may be formed in the trench body. A dielectric material and a filler material may be deposited within the trench. The filler material may be heated such that a stress is exerted on the dielectric material before the dielectric material is heated to generate a ferroelectric phase within the dielectric material. A non-contiguous layer may be formed above a substrate. A second layer including a high-k dielectric material may be formed above the first layer. The high-k dielectric material may be heated to generate a ferroelectric phase within the high-k dielectric material.Type: ApplicationFiled: December 19, 2014Publication date: June 23, 2016Inventors: Sandip Niyogi, Sergey Barabash, Federico Nardi, Dipankar Pramanik
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Publication number: 20160149129Abstract: Selector elements that can be suitable for nonvolatile memory device applications are disclosed. The selector element can have low leakage currents at low voltages to reduce sneak current paths for non-selected devices, and higher leakage currents at higher voltages to minimize voltage drops during device switching. The selector element can be based on multilayer film stacks (e.g. metal-semiconductor-metal (MSM) stacks). The metal layer of the selector element can include conductive materials such as metal silicides, and metal silicon nitrides. Conductive materials of the MSM may include tantalum silicide, tantalum silicon nitride, titanium silicide, titanium silicon nitride, or combinations thereof.Type: ApplicationFiled: November 25, 2014Publication date: May 26, 2016Inventors: Ashish Bodke, Mark Clark, Kevin Kashefi, Prashant B. Phatak, Dipankar Pramanik
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Publication number: 20160148976Abstract: Selector elements that can be suitable for nonvolatile memory device applications are disclosed. The selector element can have low leakage currents at low voltages to reduce sneak current paths for non-selected devices, and higher leakage currents at higher voltages to minimize voltage drops during device switching. The selector element can be based on a silicon semiconductor layer doped with both carbon and nitrogen. The metal layer of the selector element can include conductive materials such as carbon, tungsten, titanium nitride, or combinations thereof.Type: ApplicationFiled: November 26, 2014Publication date: May 26, 2016Inventors: Ashish Bodke, Mark Clark, Kevin Kashefi, Prashant B. Phatak, Dipankar Pramanik
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Patent number: 9343673Abstract: Embodiments of the invention generally relate to memory devices and methods for fabricating such memory devices. In one embodiment, a method for fabricating a resistive switching memory device includes depositing a metallic layer on a lower electrode disposed on a substrate and exposing the metallic layer to an activated oxygen source while heating the substrate to an oxidizing temperature within a range from about 300° C. to about 600° C. and forming a metal oxide layer from an upper portion of the metallic layer during an oxidation process. The lower electrode contains a silicon material and the metallic layer contains hafnium or zirconium. Subsequent to the oxidation process, the method further includes heating the substrate to an annealing temperature within a range from greater than 600° C. to about 850° C. while forming a metal silicide layer from a lower portion of the metallic layer during a silicidation process.Type: GrantFiled: January 16, 2015Date of Patent: May 17, 2016Assignees: Intermolecular, Inc., Kabushiki Kaisha Toshiba, SanDisk 3D LLCInventors: Dipankar Pramanik, Tony P. Chiang, Tim Minvielle, Takeshi Yamaguchi
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Patent number: 9337238Abstract: Selector elements that can be suitable for nonvolatile memory device applications are disclosed. The selector element can have low leakage currents at low voltages to reduce sneak current paths for non-selected devices, and higher leakage currents at higher voltages to minimize voltage drops during device switching. The selector element can be based on multilayer film stacks (e.g. metal-semiconductor-metal (MSM) stacks). The semiconductor layer of the selector element can include a photo-luminescent or electro-luminescent material. Conductive materials of the MSM may include tungsten, titanium nitride, carbon, or combinations thereof.Type: GrantFiled: October 27, 2014Date of Patent: May 10, 2016Assignee: Intermolecular, Inc.Inventors: Kevin Kashefi, Ashish Bodke, Mark Clark, Prashant B. Phatak, Dipankar Pramanik
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Patent number: 9331276Abstract: A nonvolatile resistive memory element includes an oxygen-gettering layer. The oxygen-gettering layer is formed as part of an electrode stack, and is more thermodynamically favorable in gettering oxygen than other layers of the electrode stack. The Gibbs free energy of formation (?fG°) of an oxide of the oxygen-gettering layer is less (i.e., more negative) than the Gibbs free energy of formation of an oxide of the adjacent layers of the electrode stack. The oxygen-gettering layer reacts with oxygen present in the adjacent layers of the electrode stack, thereby preventing this oxygen from diffusing into nearby silicon layers to undesirably increase an SiO2 interfacial layer thickness in the memory element and may alternately be selected to decrease such thickness during subsequent processing.Type: GrantFiled: February 10, 2015Date of Patent: May 3, 2016Assignee: Intermolecular, Inc.Inventors: Tony P. Chiang, Dipankar Pramanik, Milind Weling
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Patent number: 9331279Abstract: An embodiment of the present invention sets forth an embedded resistive memory cell that includes a first stack of deposited layers, a second stack of deposited layers, a first electrode disposed under a first portion of the first stack, and a second electrode disposed under a second portion of the first stack and extending from under the second portion of the first stack to under the second stack. The second electrode is disposed proximate to the first electrode within the embedded resistive memory cell. The first stack of deposited layers includes a dielectric layer, a high-k dielectric layer disposed above the dielectric layer, and a metal layer disposed above the high-k dielectric layer. The second stack of deposited layers includes a high-k dielectric layer formed simultaneously with the high-k dielectric layer included in the first stack, and a metal layer disposed above the high-k dielectric layer.Type: GrantFiled: May 1, 2015Date of Patent: May 3, 2016Assignee: Intermolecular, Inc.Inventors: Dipankar Pramanik, Tony P. Chiang, David E Lazovsky
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Publication number: 20160118440Abstract: Selector elements that can be suitable for nonvolatile memory device applications are disclosed. The selector element can have low leakage currents at low voltages to reduce sneak current paths for non-selected devices, and higher leakage currents at higher voltages to minimize voltage drops during device switching. The selector element can be based on multilayer film stacks (e.g. metal-semiconductor-metal (MSM) stacks). The semiconductor layer of the selector element can include a photo-luminescent or electro-luminescent material. Conductive materials of the MSM may include tungsten, titanium nitride, carbon, or combinations thereof.Type: ApplicationFiled: October 27, 2014Publication date: April 28, 2016Inventors: Kevin Kashefi, Ashish Bodke, Mark Clark, Prashant B. Phatak, Dipankar Pramanik
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Patent number: 9297067Abstract: An amorphous silicon (a-Si) dielectric for superconducting electronics is fabricated with reduced loss tangent by fluorine passivation throughout the bulk of the layer. Complete layers or thinner sub-layers of a-Si are formed by physical vapor deposition at low temperatures (<350 C, e.g. ˜200 C) to prevent reaction with superconducting materials, then exposed to fluorine. The fluorine may be a component of a gas or plasma, or it may be a component of an interface layer. The fluorine is driven into the a-Si by heat (e.g., <350 C) or impact to passivate defects such as dangling bonds.Type: GrantFiled: December 20, 2013Date of Patent: March 29, 2016Assignee: Intermolecular, Inc.Inventors: Dipankar Pramanik, Andrew Steinbach
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Patent number: 9292627Abstract: The present invention provides a method for compensating infidelities of a process that transfers a pattern to a layer of an integrated circuit, by minimizing, with respect to a photomask pattern, a cost function that quantifies the deviation between designed and simulated values of circuit parameters of the pattern formed on a semiconductor wafer.Type: GrantFiled: October 28, 2013Date of Patent: March 22, 2016Assignee: Cadence Design Systems, Inc.Inventors: Dipankar Pramanik, Michiel Victor Paul Kruger, Roy V. Prasad, Abdurrahman Sezginer
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Patent number: 9275727Abstract: A resistor array for multi-bit data storage without the need to increase the size of a memory chip or scale down the feature size of a memory cell contained within the memory chip is provided. The resistor array incorporates a number of discrete resistive elements to be selectively connected, in different series combinations, to at least one memory cell or memory device. In one configuration, by connecting each memory cell or device with at least one resistor array, a resistive switching layer found in the resistive switching memory element of the connected memory device is capable of being at multiple resistance states for storing multiple bits of digital information. During device programming operations, when a desired series combination of the resistive elements within the resistor array is selected, the resistive switching layer in the connected memory device can be in a desired resistance state.Type: GrantFiled: February 20, 2015Date of Patent: March 1, 2016Assignees: Intermolecular, Inc., Kabushiki Kaisha Toshiba, SanDisk 3d LLCInventors: Dipankar Pramanik, David E Lazovsky, Tim Minvielle, Takeshi Yamaguchi
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Patent number: 9245941Abstract: A YBCO-based conductive material can be used as an electrode, which can contact a dielectric such as a high k dielectric. Alternatively, a material with a narrow conduction band can be used as an electrode, which can contact a dielectric such as a high k dielectric. By aligning the dielectric with the band gap of the YBCO-based electrode or with the band gap of the narrow-band conductive material electrode, e.g., the conduction band minimum of the dielectric falls into one of the band gaps of the YBCO-based or narrow-band conductive material, thermionic leakage through the dielectric can be reduced, since the excited electrons or holes in the electrode would need higher thermal excitation energy to overcome the band gap before passing through the dielectric layer.Type: GrantFiled: December 26, 2013Date of Patent: January 26, 2016Assignee: Intermolecular, Inc.Inventors: Sergey Barabash, Mankoo Lee, Dipankar Pramanik
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Patent number: 9246092Abstract: Selector elements that can be suitable for nonvolatile memory device applications are disclosed. The selector element can have low leakage currents at low voltages to reduce sneak current paths for non-selected devices, and higher leakage currents at higher voltages to minimize voltage drops during device switching. The selector element can include insulator layers between the semiconductor layer and the metal layers to lower the leakage current of the device. The metal layers of the selector element can include conductive materials such as tungsten, titanium nitride, or combinations thereof.Type: GrantFiled: November 26, 2014Date of Patent: January 26, 2016Assignee: Intermolecular, Inc.Inventors: Ashish Bodke, Mark Clark, Kevin Kashefi, Prashant B. Phatak, Dipankar Pramanik