Patents by Inventor Sunil Chandra

Sunil Chandra 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).

  • Patent number: 7606832
    Abstract: A technique for orchestrating composite web services in a constrained data flow environment. Data flow constraints represent the restrictions which the domains involved in composition might want to impose on access to the data they provide or the source from which they can accept data. The data flow constraints are overcome by breaking down an input composite web service specification into topologies (a topology is a set of partitions communicatively connected with one another at runtime). The system applies a rule-based filtering mechanism to choose a topology that does not violate any data flow constraints. Each of the partitions belonging to the chosen topology is executed within the same domain as the corresponding web service it invokes, thus having the same access rights as the corresponding web service. The composite web service is orchestrated in a decentralized fashion using these partitions, thereby ensuring that no data flow constraints are violated.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: October 20, 2009
    Assignee: International Business Machines Corporation
    Inventors: Girish B. Chafle, Sunil Chandra, Sugata Ghosal, Vijay Mann, Mangala G. Nanda
  • Patent number: 7588609
    Abstract: The claimed invention involves a novel composition of matter comprising a mixture of Fe—Mo Intermetallic and copper oxide. A novel composition of matter of Fe—Mo Intermetallic, copper oxide and calcium carbonate is also claimed. The claimed invention also involves a novel friction lining additive comprising Fe—Mo Intermetallic and copper oxide for improved braking effectiveness. Fe—Mo Intermetallic, copper oxide and calcium carbonate may also be used as a friction lining additive according to the present invention. The claimed invention also includes a novel motor brush comprising Fe—Mo Intermetallic and copper oxide for improved wear. Fe—Mo Intermetallic, copper oxide and calcium carbonate may also be used as a motor brush additive according to the present invention.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: September 15, 2009
    Assignee: Climax Engineered Materials, LLC
    Inventors: Mohamed H. Khan, Sunil Chandra Jha
  • Publication number: 20090224200
    Abstract: The aqueous slurries according to the present invention include soluble salts of molybdenum dissolved in an oxidizing agent and deionized water. Other aqueous polishing slurries include dissolved and undissolved nanoparticles of MoO3 in a solution of deionized water and an oxidizing agent.
    Type: Application
    Filed: May 20, 2009
    Publication date: September 10, 2009
    Applicant: Climax Engineered Materials, LLC
    Inventors: Sunil Chandra Jha, Sreehari Nimmala, Sharath Hedge, Youngki Hong, Suryadevara Vijayakumar Babu, Udaya B. Patri
  • Patent number: 7584276
    Abstract: Decentralized orchestration of composite services results in a number of flow topologies which differ in their messaging patterns and the distribution of flow code amongst different partitions of a topology. Different performance metrics result for different topologies, and this is governed by the availability of resources, such as CPU cycles, memory, network bandwidth, and so on. A performance model is used to evaluate the performance of different topologies based on availability of resources, and dynamically direct client requests between different topologies according to prevailing conditions.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: September 1, 2009
    Assignee: International Business Machines Corporation
    Inventors: Girish Bhimrao Chafle, Sunil Chandra, Neeran M Karnik, Vijay Mann, Mangala Gowri Nanda
  • Publication number: 20090181179
    Abstract: A method for producing a composite metal powder according to one embodiment of the invention may comprise: Providing a supply of molybdenum metal powder; providing a supply of a sodium compound; combining the molybdenum metal powder and the sodium compound with a liquid to form a slurry; feeding the slurry into a stream of hot gas; and recovering the composite metal powder.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 16, 2009
    Applicant: CLIMAX ENGINEERED MATERIALS, LLC
    Inventors: Naresh Goel, Carl Cox, Dave Honecker, Eric Smith, Chris Michaluk, Adam DeBoskey, Sunil Chandra Jha
  • Patent number: 7553430
    Abstract: Aqueous polishing slurries for chemical-mechanical polishing are effective for polishing copper at high polish rates. The aqueous slurries according to the present invention may include soluble salts of molybdenum dissolved in an oxidizing agent and molybdic acid dissolved in an oxidizing agent. Methods for polishing copper by chemical-mechanical planarization include polishing copper with low pressures using a polishing pad and a aqueous slurries including soluble salts of molybdenum dissolved in an oxidizing agent and molybdic acid dissolved in an oxidizing agent, particles of MoO3 dissolved in an oxidizing agent, and particles of MoO2 dissolved in an oxidizing agent.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: June 30, 2009
    Assignee: Climax Engineered Materials, LLC
    Inventors: Sunil Chandra, Sreehari Nimmala, Suryadevara Vijayakumar Babu, Udaya B. Patri, Sharath Hedge, Youngki Hong
  • Publication number: 20090116995
    Abstract: Densified molybdenum metal powder. Densified molybdenum metal powder has substantially generally spherical particles, surface-area-to-mass ratio of no more than about 0.5 m2/g as determined by BET analysis, and a flowability greater than about 32 s/50 g as determined by a Hall Flowmeter.
    Type: Application
    Filed: December 18, 2008
    Publication date: May 7, 2009
    Applicant: Climax Engineered Materials, LLC
    Inventors: Loyal M. Johnson, JR., Sunil Chandra Jha, Patrick Ansel Thompson
  • Patent number: 7524353
    Abstract: Densified molybdenum metal powder and method for producing same. Densified molybdenum powder has substantially generally spherical particles, surface area to mass ratio of no more than about 0.5 m2/g as determined by BET analysis, and a flowability greater than about 32 s/50g as determined by a Hall Flowmeter. A method for producing densified molybdenum metal powder includes providing a supply of precursor material of molybdenum metal powder particles reduced from ammonium molybdate; providing a supply of reducing gas; densifying the precursor material in the presence of the reducing gas; and producing the densified molybdenum metal powder.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: April 28, 2009
    Assignee: Climax Engineered Materials, LLC
    Inventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Patrick Ansel Thompson
  • Publication number: 20090098010
    Abstract: Molybdenum metal powder. Molybdenum metal powder includes molybdenum metal particles having a surface-area-to-mass ratio of between about 1 m2/g and about 4 m2/g, as determined by BET analysis, and a flowability of between about 29 s/50 g and 86 s/50 g as determined by a Hall Flowmeter.
    Type: Application
    Filed: December 18, 2008
    Publication date: April 16, 2009
    Applicant: CLIMAX ENGINEEREED MATERIALS, LLC
    Inventors: Loyal M. Johnson, JR., Sunil Chandra Jha, Patrick Ansel Thompson
  • Publication number: 20090095131
    Abstract: Method for producing molybdenum metal powder. The invention includes introducing a supply of ammonium molybdate precursor material into a furnace in a first direction and introducing a reducing gas into a cooling zone in a second direction opposite to the first direction. The ammonium molybdate precursor material is heated at an initial temperature in the presence of the reducing gas to produce an intermediate product that is heated at a final temperature in the presence of the reducing gas, thereby creating the molybdenum metal powder comprising particles having a surface area to mass ratio of between about 1 m2/g and about 4 m2/g, as determined by BET analysis, and a flowability of between about 29 s/50 g and 86 s/50 g as determined by a Hall Flowmeter. The molybdenum metal powder is moved through the cooling zone.
    Type: Application
    Filed: December 18, 2008
    Publication date: April 16, 2009
    Applicant: Climax Engineering Materials, LLC
    Inventors: Loyal M. Johnson, JR., Sunil Chandra Jha, Patrick Ansel Thompson
  • Publication number: 20090085606
    Abstract: An electronic device with a CMOS circuit (CC) comprises a first driver circuit (10) having a first and second PMOS transistor (P1, P2) and a first and second NMOS transistor (N1, N2). The electronic device furthermore comprise a second driver circuit (20) with a third and fourth PMOS transistor (P3, P4) and a third and fourth NMOS transistor (N3, N4). The second driver circuit (20) is complementary to the first driver circuit (10) and switches in the opposite direction to the first driver circuit (10). A gate of the second and fourth PMOS transistor (P2, P4) is coupled to a first bias voltage (REPp) and a gate of the second and fourth NMOS transistor (N2, N4) is coupled to a second bias voltage (REFn). A first capacitance (C3) is coupled between the gate and the drain of the fourth PMOS transistor (P4) and a second capacitance (C4) is coupled between the gate and the drain source of the fourth NMOS transistor (N4).
    Type: Application
    Filed: March 13, 2007
    Publication date: April 2, 2009
    Applicant: NXP B.V.
    Inventor: Sunil Chandra Sunil
  • Patent number: 7475275
    Abstract: The invention provides a method for fault handling in a co-operative workflow environment that employs a placement strategy for transaction scope and associated fault handlers and compensation handlers across different workfiow components. The method employs a fault propagation scheme for forwarding a fault occurring in any of the workflow components to a fault handler. The method employs a distributed data collection mechanism to facilitate recovery from a fault occurring in any the workfiow components. The method employs a fault recovery mechanism using compensation. The transaction scope defines a transaction boundary and provides a fault handling and a fault recovery context for a set of activities and the transaction scope may be nested inside another transaction scope resulting in outer and inner scopes.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: January 6, 2009
    Assignee: International Business Machines Corporation
    Inventors: Girish B. Chafle, Sunil Chandra, Pankaj Kankar, Vijay Mann
  • Publication number: 20080307256
    Abstract: Embodiments herein provide a fault-handling scheme based on forward recovery for cooperative workflow environments. The fault handling scheme relies on the correct placement of transaction scopes and their associated fault and compensation handlers for maintaining correct application semantics, a fault propagation scheme for forwarding faults to a workflow component that has the corresponding fault handler, and a distributed mechanism for collecting data of completed workflow components to facilitate recovering from faults. The fault handling scheme makes use of control flow messages to facilitate compensation of nested transaction scopes (residing in different components). The workflow components are also modified with additional code for aiding with fault propagation and fault recovery.
    Type: Application
    Filed: August 19, 2008
    Publication date: December 11, 2008
    Applicant: International Business Machines Corporation
    Inventors: Girish B. Chafle, Sunil Chandra, Pankaj Kankar, Vijay Mann
  • Publication number: 20080277378
    Abstract: Method for polishing copper by chemical-mechanical planarization. The method of the present invention includes dissolving MoO3 in an oxidizing agent and deionized water to form a first slurry; filtering the first slurry; adding supplemental ceramic/metal oxide nano-particles to the first slurry after filtering, forming an aqueous slurry; introducing the aqueous slurry between the copper and a polishing pad; and, polishing the copper by moving the polishing pad and the copper relative to one another.
    Type: Application
    Filed: June 27, 2008
    Publication date: November 13, 2008
    Applicant: Climax Engineered Materials, LLC
    Inventors: S.V. Babu, Sharath Hegde, Sunil Chandra Jha, Udaya B. Patri, Youngki Hong
  • Publication number: 20080213122
    Abstract: Molybdenum metal powder has surface-area-to-mass-ratios in a range of between about 1.0 meters2/gram (m2/g) and about 3.0 m2/g, as determined by BET analysis, in combination with a particle size wherein at least 30% of the particles are larger than a size +100 standard Tyler mesh sieve. A method for producing molybdenum metal powder includes providing a supply of ammonium molybdate and a reducing gas; causing an exothermic reaction between the ammonium molybdate and the reducing gas at a first temperature to produce an intermediate reaction product and a supplemental reducing gas; causing an endothermic reaction between the intermediate reaction product and the reducing gas at a final temperature to produce the molybdenum metal powder.
    Type: Application
    Filed: August 14, 2007
    Publication date: September 4, 2008
    Applicant: CLIMAX ENGINEERED MATERIALS, LLC
    Inventors: Loyal M. Johnson, Sunil Chandra Jha, Carl Cox, Patrick Ansel Thompson
  • Publication number: 20080176532
    Abstract: The present invention deals with a method and system for routing a call in a mobile communication network. The method comprises receiving a message by a caller prevailing network corresponding to a caller from a callee home network corresponding to a callee, if the callee is roaming. The message is received in response to the call being initiated by the caller for the callee. The message can comprise a redirection information corresponding to the callee in roaming. The method further comprises solving a predefined criterion for routing the call based on the redirection information in the message and connecting the call based on solution of the predefined criterion.
    Type: Application
    Filed: March 26, 2008
    Publication date: July 24, 2008
    Applicant: International Business Machines Corporation
    Inventors: Pankaj Kankar, Sunil Chandra, Sougata Mukherjea
  • Publication number: 20080147835
    Abstract: A partially decentralized composition of web services is performed by distributing the coordination responsibility of the component web services, originally performed at run time by the centralized execution language code, to multiple web service domains. The original software is divided into multiple code partitions and placed among different web service domains. These code partitions invoke one or more component web services and perform the required data transformation applicable to enable calling and returning data from the web services. The partitions may invoke more than one web service. The web service domains containing the code partitions that invoke more than one web services and perform the required data transformation become new coordinator nodes. In constrained data flow environments, to satisfy any data flow constraints, the data is sent from producer to consumer along a path restricted to the nodes eligible to access this data.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 19, 2008
    Inventors: Sunil Chandra, Pankaj Kankar
  • Publication number: 20080070579
    Abstract: The present invention deals with a method and system for routing a call in a mobile communication network. The method comprises receiving a message by a caller prevailing network corresponding to a caller from a callee home network corresponding to a callee, if the callee is roaming. The message is received in response to the call being initiated by the caller for the callee. The message can comprise a redirection information corresponding to the callee in roaming. The method further comprises solving a predefined criterion for routing the call based on the redirection information in the message and connecting the call based on solution of the predefined criterion.
    Type: Application
    Filed: September 14, 2006
    Publication date: March 20, 2008
    Inventors: Pankaj Kankar, Sunil Chandra, Sougata Mukherjea
  • Publication number: 20080014966
    Abstract: A mobile wireless device, such as a mobile wireless phone, is adapted based on a user's current abstracted contextual situation, where the context of a user is determined using devices enabled with near-field communication technology. Dynamic information of a user of a mobile device, such as the identity of his or her current environment, is determined using near-field communication, such as radio-frequency identification (RFID) tags. Static information regarding the user is also determined, where such static information can include the user's preferences regarding how the mobile device should adapt to certain environments. An abstracted contextual situation of the user is synthesized based on this dynamic and static information. One or more adaptation directives for the mobile device of the user are determined based on the user's abstracted contextual situation.
    Type: Application
    Filed: July 13, 2006
    Publication date: January 17, 2008
    Inventors: Dipanjan Chakraborty, Sudha Krishnamurthy, Sumit Mittal, Sunil Chandra, Pankaj Kankar, Ashish Verma
  • Patent number: 7276102
    Abstract: Molybdenum metal powder, and method for production thereof. Molybdenum metal powder has surface-area-to-mass-ratios in a range of between about 1.0 meters2/gram (m2/g) and about 3.0 m2/g, as determined by BET analysis, in combination with a particle size wherein at least 30% of the particles have a particle size larger than a size +100 standard Tyler mesh sieve. In addition, molybdenum metal powder 10 may be further distinguished by flowability in a range of between about 29 seconds/50 grams (s/50 g) and about 64 s/50 g, as determined by a Hall Flowmeter. A method of producing molybdenum powder may comprise providing a supply of ammonium molybdate, heating the ammonium molybdate at an initial temperature in the presence of a reducing gas to produce an intermediate product, and heating the intermediate product at a final temperature in the presence of the reducing gas, producing molybdenum metal powder.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: October 2, 2007
    Assignee: Climax Engineered Materials, LLC
    Inventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Carl Cox, Patrick Ansel Thompson