Patents by Inventor Mukundan Narasimhan

Mukundan Narasimhan 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).

  • Publication number: 20180358495
    Abstract: The present invention relates to dielectric coating formulation for solar module where a separate adhesive layer is not required for applying the formulation to the solar module. Preferably, the solar module is a light weight solar module.
    Type: Application
    Filed: March 24, 2016
    Publication date: December 13, 2018
    Inventors: Arul SHANMUGASUNDRAM, Tapan Kumar ROUT, Mukundan NARASIMHAN, Prosenjit BOSE, Amresh MAHAJAN
  • Publication number: 20140332371
    Abstract: A method of deposition of a transparent conductive film from a metallic target is presented. A method of forming a transparent conductive oxide film according to embodiments of the present invention include depositing the transparent conductive oxide film in a pulsed DC reactive ion process with substrate bias, and controlling at least one process parameter to affect at least one characteristic of the conductive oxide film. The resulting transparent oxide film, which in some embodiments can be an indium-tin oxide film, can exhibit a wide range of material properties depending on variations in process parameters. For example, varying the process parameters can result in a film with a wide range of resistive properties and surface smoothness of the film.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 13, 2014
    Inventors: R. Ernest Demaray, Mukundan Narasimhan
  • Patent number: 8728285
    Abstract: A method of deposition of a transparent conductive film from a metallic target is presented. A method of forming a transparent conductive oxide film according to embodiments of the present invention include depositing the transparent conductive oxide film in a pulsed DC reactive ion process with substrate bias, and controlling at least one process parameter to affect at least one characteristic of the conductive oxide film. The resulting transparent oxide film, which in some embodiments can be an indium-tin oxide film, can exhibit a wide range of material properties depending on variations in process parameters. For example, varying the process parameters can result in a film with a wide range of resistive properties and surface smoothness of the film.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: May 20, 2014
    Assignee: Demaray, LLC
    Inventors: Richard E. Demaray, Mukundan Narasimhan
  • Patent number: 8105466
    Abstract: A biased pulse DC reactor for sputtering of oxide films is presented. The biased pulse DC reactor couples pulsed DC at a particular frequency to the target through a filter which filters out the effects of a bias power applied to the substrate, protecting the pulsed DC power supply. Films deposited utilizing the reactor have controllable material properties such as the index of refraction. Optical components such as waveguide amplifiers and multiplexers can be fabricated using processes performed on a reactor according to the present invention.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: January 31, 2012
    Assignee: SpringWorks, LLC
    Inventors: Hongmei Zhang, Mukundan Narasimhan, Ravi B. Mullapudi, Richard E. Demaray
  • Patent number: 8076005
    Abstract: High density oxide films are deposited by a pulsed-DC, biased, reactive sputtering process from a titanium containing target to form high quality titanium containing oxide films. A method of forming a titanium based layer or film according to the present invention includes depositing a layer of titanium containing oxide by pulsed-DC, biased reactive sputtering process on a substrate. In some embodiments, the layer is TiO2. In some embodiments, the layer is a sub-oxide of Titanium. In some embodiments, the layer is TixOy wherein x is between about 1 and about 4 and y is between about 1 and about 7. In some embodiments, the layer can be doped with one or more rare-earth ions. Such layers are useful in energy and charge storage, and energy conversion technologies.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: December 13, 2011
    Assignee: SpringWorks, LLC
    Inventors: Richard E. Demaray, Hong Mei Zhang, Mukundan Narasimhan, Vassiliki Milonopoulou
  • Patent number: 8066840
    Abstract: A method of forming metallic connector patterns for solar cells, whereby an embosser having raised features shaped in the form of a metallic connector pattern is used to attach a portion of a metallic foil to a transparent conductive layer formed on a top transparent surface of a solar cell structure. The raised surfaces of the embosser press the metallic foil portion against the transparent conductive layer. Heat and pressure directed to the metallic foil portion attach the metallic foil portion to the underlying transparent conductive layer, and then the rest of the metallic foil, which is not attached to the transparent conductive layer, is removed.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: November 29, 2011
    Assignee: SoloPower, Inc.
    Inventors: Mukundan Narasimhan, Todd Johnson, Bulent M. Basol
  • Publication number: 20100147364
    Abstract: The present invention provides module structures and methods of manufacturing rigid or flexible photovoltaic modules employing thin film solar cells fabricated on flexible substrates, preferably on flexible metallic foil substrates. The solar cells may be Group IBIIIAVIA compound solar cells or amorphous silicon solar cells fabricated on thin stainless steel or aluminum alloy foils. In one embodiment, initially a solar cell string including two or more solar cells is formed by interconnecting the solar cells with conductive leads or ribbons. At least one bypass diode electrically connects conductive back surfaces of at least two solar cells. The bypass diode and the solar cells are encapsulated with support material and are packed with the protective shell such that the at least one bypass diode is placed between at least one solar cell and the bottom protective sheet.
    Type: Application
    Filed: December 16, 2009
    Publication date: June 17, 2010
    Applicant: SoloPower, Inc.
    Inventors: Pedro Gonzalez, Bulent M. Basol, Burak Metin, Mukundan Narasimhan, Mustafa Pinarbasi
  • Publication number: 20090266398
    Abstract: An apparatus for and a method of interconnecting at least two solar cells using contact areas which are formed on the conductive substrates of the solar cells is described. The contact areas are formed by a material removal process which removes high resistance surface layers of the conductive substrates at the contact areas. A stringing process serially interconnects the solar cells by connecting each contact area that is cleared of high resistance surface layer to the terminal of one of the adjacent solar cells.
    Type: Application
    Filed: April 28, 2008
    Publication date: October 29, 2009
    Inventors: Burak Metin, Mukundan Narasimhan, Mustafa Pinarbasi, Bulent M. Basol
  • Patent number: 7544276
    Abstract: A biased pulse DC reactor for sputtering of oxide films is presented. The biased pulse DC reactor couples pulsed DC at a particular frequency to the target through a filter which filters out the effects of a bias power applied to the substrate, protecting the pulsed DC power supply. Films deposited utilizing the reactor have controllable material properties such as the index of refraction. Optical components such as waveguide amplifiers and multiplexers can be fabricated using processes performed on a reactor according to the present invention.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: June 9, 2009
    Assignee: SpringWorks, LLC
    Inventors: Hongmei Zhang, Mukundan Narasimhan, Ravi B. Mullapudi, Richard E. Demaray
  • Patent number: 7413998
    Abstract: A biased pulse DC reactor for sputtering of oxide films is presented. The biased pulse DC reactor couples pulsed DC at a particular frequency to the target through a filter which filters out the effects of a bias power applied to the substrate, protecting the pulsed DC power supply. Films deposited utilizing the reactor have controllable material properties such as the index of refraction. Optical components such as waveguide amplifiers and multiplexers can be fabricated using processes performed on a reactor according to the present invention.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: August 19, 2008
    Assignee: SpringWorks, LLC
    Inventors: Hongmei Zhang, Mukundan Narasimhan, Ravi B. Mullapudi, Richard E. Demaray
  • Publication number: 20080173390
    Abstract: A method of forming metallic connector patterns for solar cells, whereby an embosser having raised features shaped in the form of a metallic connector pattern is used to attach a portion of a metallic foil to a transparent conductive layer formed on a top transparent surface of a solar cell structure. The raised surfaces of the embosser press the metallic foil portion against the transparent conductive layer. Heat and pressure directed to the metallic foil portion attach the metallic foil portion to the underlying transparent conductive layer, and then the rest of the metallic foil, which is not attached to the transparent conductive layer, is removed.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 24, 2008
    Inventors: Mukundan Narasimhan, Todd Johnson, Bulent M. Basol
  • Patent number: 7381657
    Abstract: A biased pulse DC reactor for sputtering of oxide films is presented. The biased pulse DC reactor couples pulsed DC at a particular frequency to the target through a filter which filters out the effects of a bias power applied to the substrate, protecting the pulsed DC power supply. Films deposited utilizing the reactor have controllable material properties such as the index of refraction. Optical components such as waveguide amplifiers and multiplexers can be fabricated using processes performed on a reactor according to the present inention.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: June 3, 2008
    Assignee: SpringWorks, LLC
    Inventors: Hongmei Zhang, Mukundan Narasimhan, Ravi B. Mullapudi, Richard E. Demaray
  • Patent number: 7378356
    Abstract: A biased pulse DC reactor for sputtering of oxide films is presented. The biased pulse DC reactor couples pulsed DC at a particular frequency to the target through a filter which filters out the effects of a bias power applied to the substrate, protecting the pulsed DC power supply. Films deposited utilizing the reactor have controllable material properties such as the index of refraction. Optical components such as waveguide amplifiers and multiplexers can be fabricated processes performed on a reactor according to the present inention.
    Type: Grant
    Filed: March 16, 2002
    Date of Patent: May 27, 2008
    Assignee: SpringWorks, LLC
    Inventors: Hongmei Zhang, Mukundan Narasimhan, Ravi B. Mullapudi, Richard E. Demaray
  • Patent number: 7262131
    Abstract: In accordance with the present invention, a dielectric barrier layer is presented. A barrier layer according to the present invention includes a densified amorphous dielectric layer deposited on a substrate by pulsed-DC, substrate biased physical vapor deposition, wherein the densified amorphous dielectric layer is a barrier layer. A method of forming a barrier layer according to the present inventions includes providing a substrate and depositing a highly densified, amorphous, dielectric material over the substrate in a pulsed-dc, biased, wide target physical vapor deposition process. Further, the process can include performing a soft-metal breath treatment on the substrate. Such barrier layers can be utilized as electrical layers, optical layers, immunological layers, or tribological layers.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: August 28, 2007
    Assignee: Symmorphix, Inc.
    Inventors: Mukundan Narasimhan, Peter Brooks, Richard E. Demaray
  • Publication number: 20070187383
    Abstract: In accordance with one approach to the invention, elements and sub-elements of a conductive pattern on or in an optical member are designed and arranged to be predominantly or exclusively curved, so as to control the appearance of ray-like disturbances during nighttime point-source viewing situations. In another approach, the sub-elements of the conductive pattern are designed and arranged so as to be a large number of short, linear or curved elements oriented with a large angular distribution.
    Type: Application
    Filed: January 19, 2007
    Publication date: August 16, 2007
    Inventors: Richard Wipfler, Mukundan Narasimhan
  • Publication number: 20070172681
    Abstract: High density oxide films are deposited by a pulsed-DC, biased, reactive sputtering process from a titanium containing target to form high quality titanium containing oxide films. A method of forming a titanium based layer or film according to the present invention includes depositing a layer of titanium containing oxide by pulsed-DC, biased reactive sputtering process on a substrate. In some embodiments, the layer is TiO2. In some embodiments, the layer is a sub-oxide of Titanium. In some embodiments, the layer is TixOy wherein x is between about 1 and about 4 and y is between about 1 and about 7. In some embodiments, the layer can be doped with one or more rare-earth ions. Such layers are useful in energy and charge storage, and energy conversion technologies.
    Type: Application
    Filed: March 22, 2007
    Publication date: July 26, 2007
    Inventors: Richard Demaray, Hong Zhang, Mukundan Narasimhan, Vassiliki Milonopoulou
  • Patent number: 7238628
    Abstract: High density oxide films are deposited by a pulsed-DC, biased, reactive sputtering process from a titanium containing target to form high quality titanium containing oxide films. A method of forming a titanium based layer or film according to the present invention includes depositing a layer of titanium containing oxide by pulsed-DC, biased reactive sputtering process on a substrate. In some embodiments, the layer is TiO2. In some embodiments, the layer is a sub-oxide of Titanium. In some embodiments, the layer is TixOy wherein x is between about 1 and about 4 and y is between about 1 and about 7. In some embodiments, the layer can be doped with one or more rare-earth ions. Such layers are useful in energy and charge storage, and energy conversion technologies.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: July 3, 2007
    Assignee: Symmorphix, Inc.
    Inventors: Richard E. Demaray, Hong Mei Zhang, Mukundan Narasimhan, Vassiliki Milonopoulou
  • Patent number: 7205662
    Abstract: In accordance with the present invention, a dielectric barrier layer is presented. A barrier layer according to the present invention includes a densified amorphous dielectric layer deposited on a substrate by pulsed-DC, substrate biased physical vapor deposition, wherein the densified amorphous dielectric layer is a barrier layer. A method of forming a barrier layer according to the present inventions includes providing a substrate and depositing a highly densified, amorphous, dielectric material over the substrate in a pulsed-dc, biased, wide target physical vapor deposition process. Further, the process can include performing a soft-metal breath treatment on the substrate. Such barrier layers can be utilized as electrical layers, optical layers, immunological layers, or tribological layers.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: April 17, 2007
    Assignee: Symmorphix, Inc.
    Inventors: Mukundan Narasimhan, Peter Brooks, Richard E. Demaray
  • Publication number: 20060071592
    Abstract: In accordance with the present invention, a dielectric barrier layer is presented. A barrier layer according to the present invention includes a densified amorphous dielectric layer deposited on a substrate by pulsed-DC, substrate biased physical vapor deposition, wherein the densified amorphous dielectric layer is a barrier layer. A method of forming a barrier layer according to the present inventions includes providing a substrate and depositing a highly densified, amorphous, dielectric material over the substrate in a pulsed-dc, biased, wide target physical vapor deposition process. Further, the process can include performing a soft-metal breath treatment on the substrate. Such barrier layers can be utilized as electrical layers, optical layers, immunological layers, or tribological layers.
    Type: Application
    Filed: September 16, 2005
    Publication date: April 6, 2006
    Inventors: Mukundan Narasimhan, Peter Brooks, Richard Demaray
  • Publication number: 20060054496
    Abstract: A biased pulse DC reactor for sputtering of oxide films is presented. The biased pulse DC reactor couples pulsed DC at a particular frequency to the target through a filter which filters out the effects of a bias power applied to the substrate, protecting the pulsed DC power supply. Films deposited utilizing the reactor have controllable material properties such as the index of refraction. Optical components such as waveguide amplifiers and multiplexers can be fabricated using processes performed on a reactor according to the present inention.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 16, 2006
    Inventors: Hongmei Zhang, Mukundan Narasimhan, Ravi Mullapudi, Richard Demaray