Patents by Inventor Shankar Raman
Shankar Raman 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: 20090034733Abstract: Systems and methods secure data in storage. A management system generates a sequence of keys and an identifier of each key in the sequence. A current key in the sequence and the identifier of the current key are transferred from the management system to a storage system. The storage system encrypts the data into encrypted data using the current key. The storage system stores the identifier and the encrypted data. The identifier and the encrypted data are retrieved from the storage system. The key in the sequence identified by the identifier is transferred from the management system to the storage system. The storage system decrypts the encrypted data using the decryption key.Type: ApplicationFiled: July 31, 2007Publication date: February 5, 2009Inventors: Shankar Raman, Kiran Kumar Malle Gowda
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Patent number: 7153258Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: GrantFiled: March 26, 2004Date of Patent: December 26, 2006Assignee: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20060162689Abstract: A system for controlling fuel injection parameters of a diesel engine is provided. The system includes an engine cylinder, a fuel injector, a glow plug, an ionization sensor and a controller. The fuel injector provides fuel to the engine cylinder and initiates the combustion process within the engine cylinder. The ionization sensor senses ionization during the combustion process and generates an ionization signal provided to the controller. Based on the ionization signal the controller is configured to control the fuel injection parameters, such as the number of injections, quantity and timing of each fuel injection events and the maximum rate of engine exhaust gas recirculation.Type: ApplicationFiled: January 25, 2005Publication date: July 27, 2006Inventors: James Winkelman, Guoming Zhu, Shankar Raman
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Publication number: 20060168649Abstract: A method for addressing attacks on a computer connected to a network includes receiving at a router a TCP SYN request to be screened. The method also includes comparing the received TCP SYN request to be screened to at least one stored tuple representative of one or more SYN requests previously received at the router and determining that the received TCP SYN request to be screened matches the stored tuple. In response to determining that the received TCP SYN request to be screened matches the stored tuple, the TCP SYN+ACK response is prevented from being sent by the router in response to the TCP SYN request to be screened.Type: ApplicationFiled: October 26, 2004Publication date: July 27, 2006Inventors: Balaji Venkat, Srinivas Subramanian, Venkat Ramani, Shankar Raman
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Patent number: 7025719Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: GrantFiled: March 26, 2004Date of Patent: April 11, 2006Assignee: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Patent number: 7022064Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: GrantFiled: March 5, 2004Date of Patent: April 4, 2006Assignee: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Patent number: 6997865Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: GrantFiled: March 5, 2004Date of Patent: February 14, 2006Assignee: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Patent number: 6896652Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: GrantFiled: September 20, 2002Date of Patent: May 24, 2005Assignee: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20040181121Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: March 26, 2004Publication date: September 16, 2004Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20040181123Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: March 26, 2004Publication date: September 16, 2004Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20040181122Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: March 26, 2004Publication date: September 16, 2004Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20040181125Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: March 26, 2004Publication date: September 16, 2004Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20040171907Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: March 5, 2004Publication date: September 2, 2004Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20040171908Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: March 5, 2004Publication date: September 2, 2004Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Patent number: 6537203Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: GrantFiled: May 4, 2000Date of Patent: March 25, 2003Assignee: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20030028077Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: September 20, 2002Publication date: February 6, 2003Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Publication number: 20010029314Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: ApplicationFiled: June 13, 2001Publication date: October 11, 2001Applicant: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power
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Patent number: 6123662Abstract: A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.Type: GrantFiled: July 13, 1998Date of Patent: September 26, 2000Assignee: Acorn Cardiovascular, Inc.Inventors: Clifton A. Alferness, Jai Shankar Raman, John Melmouth Power