Patents by Inventor Srinivasan Sridharan

Srinivasan Sridharan 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: 20130164466
    Abstract: A glass-flake loaded organic sealant system is useful for sealing active layers such as those in electronic devices and solar cells.
    Type: Application
    Filed: July 22, 2011
    Publication date: June 27, 2013
    Applicant: FERRO CORPORATION
    Inventors: Chandrashekhar S. Khadilkar, Robert P. Blonski, Srinivasan Sridharan, Jackie D. Davis, John J. Maloney, James D. Walker, Andrew M. Rohn, JR.
  • Publication number: 20130111953
    Abstract: Durable hermetic seals between two inorganic substrates are produced using a high-intensity electromagnetic energy source, such as laser, to heat and seal enamel layers with controlled absorption of high-intensity energy source. Durable hermetic seals incorporating electrical feedthroughs are also produced.
    Type: Application
    Filed: April 27, 2011
    Publication date: May 9, 2013
    Applicant: FERRO CORPORATION
    Inventors: John J. Maloney, Robert P. Blonski, Chandrashekhar S. Khadilkar, Srinivasan Sridharan
  • Publication number: 20130104980
    Abstract: Glasses comprising Bi203, ZnO B203 and optionally a colorant including an oxide of a metal such as iron, cobalt, manganese, nickel, copper and chromium are suitable to form hermetic seals in solar cell modules, architectural glass windows and MEMS devices. Glass frit and paste compositions suitable for flow and bonding to various substrates—glass, metal, silicon, in the temperature range of 400-500 degrees Centigrade. The broad compositional range in mole % is 25-70% Bi203, up to 65% ZnO, and 1-70% B203. Such glasses do not have batched in alumina or silica. Such glasses lack alumina and silica.
    Type: Application
    Filed: April 15, 2011
    Publication date: May 2, 2013
    Applicant: FERRO CORPORATION
    Inventors: Srinivasan Sridharan, John J. Maloney, Chandrashekhar Khadilkar, Robert P. Blonski, David L. Widlewski
  • Publication number: 20130062712
    Abstract: Hot-melt sealing glass compositions that include one or more glass frits dispersed in a polymeric binder system. The polymeric binder system is a solid at room temperature, but melts at a temperature of from about 35° C. to about 90° C., thereby forming a flowable liquid dispersion that can be applied to a substrate (e.g., a cap wafer and/or a device wafer of a MEMS device) by screen printing. Hot-melt sealing glass compositions according to the invention rapidly re-solidify and adhere to the substrate after being deposited by screen printing. Thus, they do not tend to spread out as much as conventional solvent-based glass frit bonding pastes after screen printing. And, because hot-melt sealing glass compositions according to the invention are not solvent-based systems, they do not need to be force dried after deposition.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 14, 2013
    Applicant: FERRO CORPORATION
    Inventors: Robert D. Gardner, Keith M. Mason, Srinivasan Sridharan, Aziz S. Shaikh
  • Patent number: 8383158
    Abstract: Methods, devices, kits and compositions to treat a myocardial infarction. In one embodiment, the method includes the prevention of remodeling of the infarct zone of the ventricle. In other embodiments, the method includes the introduction of structurally reinforcing agents. In other embodiments, agents are introduced into a ventricle to increase compliance of the ventricle. In an alternative embodiment, the prevention of remodeling includes the prevention of thinning of the ventricular infarct zone. In another embodiment, the prevention of remodeling and thinning of the infarct zone involves the cross-linking of collagen and prevention of collagen slipping. In other embodiments, the structurally reinforcing agent may be accompanied by other therapeutic agents. These agents may include, but are not, limited to pro-fibroblastic and angiogenic agents.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: February 26, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Eugene T. Michal, Evgenia Mandrusov, Charles D. Claude, Ni Ding, Murthy Simhambhatla, Syed Faiyez Ahmed Hossainy, Srinivasan Sridharan, Paul Consigny
  • Publication number: 20130040422
    Abstract: Formulations and methods of making solar cell contacts and cells therewith are disclosed. The invention provides a photovoltaic cell comprising a front contact, a back contact, and a rear contact. The back contact comprises, prior to firing, a passivating layer onto which is applied a paste, comprising aluminum, a glass component, wherein the aluminum paste comprises, aluminum, another optional metal, a glass component, and a vehicle. The back contact comprises, prior to firing, a passivating layer onto which is applied an aluminum paste, wherein the aluminum paste comprises aluminum, a glass component, and a vehicle.
    Type: Application
    Filed: September 13, 2012
    Publication date: February 14, 2013
    Applicant: FERRO CORPORATION
    Inventors: Nazarali Merchant, Aziz S. Shaikh, Srinivasan Sridharan
  • Patent number: 8307674
    Abstract: Hot-melt sealing glass compositions that include one or more glass frits dispersed in a polymeric binder system. The polymeric binder system is a solid at room temperature, but melts at a temperature of from about 35° C. to about 90° C., thereby forming a flowable liquid dispersion that can be applied to a substrate (e.g., a cap wafer and/or a device wafer of a MEMS device) by screen printing. Hot-melt sealing glass compositions according to the invention rapidly re-solidify and adhere to the substrate after being deposited by screen printing. Thus, they do not tend to spread out as much as conventional solvent-based glass frit bonding pastes after screen printing. And, because hot-melt sealing glass compositions according to the invention are not solvent-based systems, they do not need to be force dried after deposition.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: November 13, 2012
    Assignee: Ferro Corporation
    Inventors: Robert D. Gardner, Keith M. Mason, Srinivasan Sridharan, Aziz S. Shaikh
  • Patent number: 8309844
    Abstract: Formulations and methods of making solar cell contacts and cells therewith are disclosed. The invention provides a photovoltaic cell comprising a front contact, a back contact, and a rear contact. The back contact comprises, prior to firing, a passivating layer onto which is applied a paste, comprising aluminum, a glass component, wherein the aluminum paste comprises, aluminum, another optional metal, a glass component, and a vehicle. The back contact comprises, prior to firing, a passivating layer onto which is applied an aluminum paste, wherein the aluminum paste comprises aluminum, a glass component, and a vehicle.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: November 13, 2012
    Assignee: Ferro Corporation
    Inventors: Nazarali Merchant, Aziz S. Shaikh, Srinivasan Sridharan
  • Publication number: 20120270366
    Abstract: Formulations and methods of making semiconductor devices and solar cell contacts are disclosed. The invention provides a method of making a semiconductor device or solar cell contact including ink jet printing onto a silicon wafer an ink composition, typically including a high solids loading (20-80 wt %) of glass frit and preferably a conductive metal such as silver. The wafer is then fired such that the glass frit fuses to form a glass, thereby forming a contact layer to silicon.
    Type: Application
    Filed: July 6, 2012
    Publication date: October 25, 2012
    Applicant: FERRO CORPORATION
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Paul S. Seman, Aziz S. Shaikh
  • Publication number: 20120219521
    Abstract: Methods, devices, kits and compositions to treat a myocardial infarction. In one embodiment, the method includes the prevention of remodeling of the infarct zone of the ventricle. In other embodiments, the method includes the introduction of structurally reinforcing agents. In other embodiments, agents are introduced into a ventricle to increase compliance of the ventricle. In an alternative embodiment, the prevention of remodeling includes the prevention of thinning of the ventricular infarct zone. In another embodiment, the prevention of remodeling and thinning of the infarct zone involves the cross-linking of collagen and prevention of collagen slipping. In other embodiments, the structurally reinforcing agent may be accompanied by other therapeutic agents. These agents may include but are not limited to pro-fibroblastic and angiogenic agents.
    Type: Application
    Filed: May 10, 2012
    Publication date: August 30, 2012
    Applicant: Abbott Cardiovascular System Inc.
    Inventors: Eugene T. Michal, Evgenia Mandrusov, Charles D. Claude, Ni Ding, Murthy Simhambhatia, Syed Faiyez Ahmed Hossainy, Srinivasan Sridharan, Paul Consigny
  • Patent number: 8236598
    Abstract: Formulations and methods of making semiconductor devices and solar cell contacts are disclosed. The invention provides a method of making a semiconductor device or solar cell contact including ink-jet printing onto a silicon wafer an ink composition, typically including a high solids loading (20-80 wt %) of glass frit and preferably a conductive metal such as silver. The wafer is then fired such that the glass frit fuses to form a glass, thereby forming a contact layer to silicon.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: August 7, 2012
    Assignee: Ferro Corporation
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Paul S. Seman, Aziz S. Shaikh
  • Publication number: 20120186647
    Abstract: A method of reducing bow and/or improving the electrical performance of an aluminum back contacted silicon solar cell includes applying to a silicon wafer substrate a paste including aluminum and an organometallic compound, and firing the substrate. The organometallic compound is a C1 to C30 organometallic compound of a metal selected from the group consisting of Ag, Al, Ba, Bi, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Nd, Ni, Sb, Si, Sn, Sr, Ta, V, Zn, Zr. A paste is formed having an exothermic reaction peak at a temperature of at least 300° C. to less than 660° C.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 26, 2012
    Applicant: FERRO CORPORATION
    Inventors: Nazarali Merchant, Aziz S. Shaikh, Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Hong Jiang
  • Publication number: 20120174974
    Abstract: Solar cell contacts having good electrical performance are made by a process involving: (a) providing a silicon wafer substrate; (b) providing a paste comprising: (i) aluminum, (ii) glass frit, and (iii) a separate and distinct amount of at least one oxide, such that, together with the aluminum, the glass frit and oxide forms a paste having an exothermic reaction peak, at a temperature of at least 660° C. to less than 900° C., (c) applying the paste to the silicon wafer substrate to form a coated substrate, and (d) firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and oxide.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 12, 2012
    Applicant: FERRO CORPORATION
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Nazarali Merchant, Jackie Davis, Aziz S. Shaikh, Hong Jiang
  • Publication number: 20120178207
    Abstract: Al pastes with additives of Co, Sr, V, compounds thereof and combinations thereof improve both the physical integrity of a back contact of a silicon solar cell as well as the electrical performance of a cell with such a contact.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 12, 2012
    Applicant: FERRO CORPORATION
    Inventors: Hong Jiang, Chandrashekhar S. Khadilkar, Nazarali Merchant, Srinivasan Sridharan, Aziz S. Shaikh
  • Publication number: 20120138142
    Abstract: Formulations and methods of making solar cells are disclosed. In general, the invention presents a solar cell contact made from a mixture wherein the mixture comprises a solids portion and an organics portion, wherein the solids portion comprises from about 85 to about 99 wt % of a metal component, and from about 1 to about 15 wt % of a lead-free glass component. Both front contacts and back contacts arc disclosed.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 7, 2012
    Applicant: Ferro Corporation
    Inventors: Srinivasan Sridharan, Tung Pham, Chandrashekhar S. Khadilkar, Aziz S. Shaikh, Steve S. Kim
  • Patent number: 8191501
    Abstract: A mask for masking a stent during a coating procedure may include a mask body that has a negative pattern or an approximate negative pattern of a stent pattern being masked by the mask body. An apparatus for selectively coating a predetermined portion of a medical article may include a dispenser of a coating composition, a mask, a device for creating a relative movement between the mask and the medical article.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: June 5, 2012
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Gordon Stewart, Srinivasan Sridharan, Arkady Kokish, Klaus Kleine, Benjamyn Serna, Bjorn G. Svensson
  • Publication number: 20120125428
    Abstract: Formulations and methods of making solar cells are disclosed. In general, the invention provides a solar cell comprising a contact made from a mixture wherein, prior to firing, the mixture comprises at least one aluminum source, at least one boron source, and about 0.1 to about 10 wt % of a glass component. Within the mixture, the overall content of aluminum is about 50 wt % to about 85 wt % of the mixture, and the overall content of boron is about 0.05 to about 20 wt % of the mixture.
    Type: Application
    Filed: October 24, 2011
    Publication date: May 24, 2012
    Applicant: Ferro Corporation
    Inventors: Jalal Salami, Srinivasan Sridharan, Steve S. Kim, Aziz S. Shaikh
  • Patent number: 8182463
    Abstract: A delivery catheter that includes a flexible shaft having a proximal end and a distal end, the distal end having an outer diameter less than about 13 mm; a delivery lumen having a proximal end and a distal end, the delivery lumen within the flexible shaft, the delivery lumen having at least an outlet port or at least one side hole at the distal end of the delivery lumen, the delivery lumen having a cross-sectional area at least about 5 mm2; a pressure monitoring lumen having a proximal end and a distal end, the pressure monitoring lumen within the flexible shaft; a pressure port adjacent to and connected to the distal end of the pressure monitoring lumen; a balloon inflation lumen having a proximal end and a distal end, the balloon inflation lumen within the flexible shaft; a soft tip at the distal end of the flexible shaft; a balloon at the distal end of the flexible shaft, the balloon connected to the distal end of the balloon inflation lumen, the balloon includes at least one of the following materials, po
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: May 22, 2012
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Jessica Chiu, Gregory Waimong Chan, Hongzhi Bai, Nianjiong J. Bei, Mark J. Bly, Srinivasan Sridharan, Tom Hatten
  • Patent number: 8093491
    Abstract: Formulations and methods of making solar cells are disclosed. In general, the invention presents a solar cell contact made from a mixture wherein the mixture comprises a solids portion and an organics portion, wherein the solids portion comprises from about 85 to about 99 wt % of a metal component, and from about 1 to about 15 wt % of a lead-free glass component. Both front contacts and back contacts are disclosed.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: January 10, 2012
    Assignee: Ferro Corporation
    Inventors: Srinivasan Sridharan, Tung Pham, Chandrashekhar S. Khadilkar, Aziz S. Shaikh, Steve S. Kim
  • Patent number: 8076570
    Abstract: Formulations and methods of making solar cells are disclosed. In general, the invention provides a solar cell comprising a contact made from a mixture wherein, prior to firing, the mixture comprises at least one aluminum source, at least one boron source, and about 0.1 to about 10 wt % of a glass component. Within the mixture, the overall content of aluminum is about 50 wt % to about 85 wt % of the mixture, and the overall content of boron is about 0.05 to about 20 wt % of the mixture.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: December 13, 2011
    Assignee: Ferro Corporation
    Inventors: Jalal Salami, Srinivasan Sridharan, Steve S. Kim, Aziz S. Shaikh