Patents by Inventor Lars G. Svensson
Lars G. Svensson 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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Patent number: 8968386Abstract: A stent comprises (a) a first segment that is radially compressible and expandable and (b) a second segment that is substantially rigid in a radial direction. The second segment is bendable to assume a curved configuration while remaining substantially rigid in the radial direction and thereby resisting radial compression and expansion.Type: GrantFiled: July 11, 2013Date of Patent: March 3, 2015Assignee: The Cleveland Clinic FoundationInventor: Lars G. Svensson
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Publication number: 20140018904Abstract: A stent comprises (a) a first segment that is radially compressible and expandable and (b) a second segment that is substantially rigid in a radial direction. The second segment is bendable to assume a curved configuration while remaining substantially rigid in the radial direction and thereby resisting radial compression and expansion.Type: ApplicationFiled: July 11, 2013Publication date: January 16, 2014Inventor: Lars G. Svensson
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Patent number: 7771467Abstract: An apparatus for repairing the function of a native aortic valve, defining a native valve annulus, of a patient includes a tubular valve support member having oppositely disposed first and second valve member ends and a valve member body located between the first and second valve member ends. The valve support member defines a longitudinal axis. A prosthetic valve has at least two prosthetic valve leaflets that are coaptable to permit the unidirectional flow of blood. The prosthetic valve is attached to the valve support member adjacent the second valve member end. At least two coronary openings in the valve member body are located longitudinally adjacent free edges of the at least two prosthetic valve leaflets. At least one of the coronary openings is located so as to be selectively radially aligned with a coronary ostium when the prosthetic valve is located substantially within the native valve annulus.Type: GrantFiled: October 24, 2007Date of Patent: August 10, 2010Assignee: The Cleveland Clinic FoundationInventor: Lars G. Svensson
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Patent number: 7663618Abstract: Power-efficient, pulsed driving of capacitive loads to controllable voltage levels, with particular applicability to LCDs. Energy stored in a portion of the capacitive load is recovered during a recovery phase. Time-varying signals are used to drive the load and to recover the stored energy, thus minimizing power losses, using processes named adiabatic charging and adiabatic discharging.Type: GrantFiled: November 18, 2005Date of Patent: February 16, 2010Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas, Rajat K. Lal
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Patent number: 7504852Abstract: A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately-preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.Type: GrantFiled: February 12, 2007Date of Patent: March 17, 2009Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas
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Publication number: 20080275548Abstract: An apparatus for repairing the function of a native aortic valve, defining a native valve annulus, of a patient includes a tubular valve support member having oppositely disposed first and second valve member ends and a valve member body located between the first and second valve member ends. The valve support member defines a longitudinal axis. A prosthetic valve has at least two prosthetic valve leaflets that are coaptable to permit the unidirectional flow of blood. The prosthetic valve is attached to the valve support member adjacent the second valve member end. At least two coronary openings in the valve member body are located longitudinally adjacent free edges of the at least two prosthetic valve leaflets. At least one of the coronary openings is located so as to be selectively radially aligned with a coronary ostium when the prosthetic valve is located substantially within the native valve annulus.Type: ApplicationFiled: October 24, 2007Publication date: November 6, 2008Inventor: Lars G. Svensson
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Publication number: 20080177301Abstract: A suture member having first and second ends longitudinally separated by a suture midsection is provided. The suture member is fastened to the prosthetic structure with at least one of the first and second ends being located adjacent a tissue-contacting surface of the prosthetic structure. At least one terminal feature is formed on at least one of the first and second ends located adjacent the tissue-contacting surface of the prosthetic structure. The body tissue is engaged with at least one terminal feature to anchor the prosthetic structure to the body tissue. An apparatus for anchoring a prosthetic structure to a body tissue is also provided.Type: ApplicationFiled: September 25, 2007Publication date: July 24, 2008Inventor: Lars G. Svensson
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Patent number: 7176712Abstract: A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately-preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.Type: GrantFiled: August 4, 2005Date of Patent: February 13, 2007Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas
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Patent number: 6985142Abstract: Power-efficient, pulsed driving of capacitive loads to controllable voltage levels, with particular applicability to LCDs. Energy stored in a portion of the capacitive load is recovered during a recovery phase. Time-varying signals are used to drive the load and to recover the stored energy, thus minimizing power losses, using processes named adiabatic charging and adiabatic discharging.Type: GrantFiled: September 3, 1999Date of Patent: January 10, 2006Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas, Rajat K. Lal
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Patent number: 6946868Abstract: A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately-preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.Type: GrantFiled: February 10, 2004Date of Patent: September 20, 2005Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas
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Publication number: 20040183566Abstract: A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately-preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.Type: ApplicationFiled: February 10, 2004Publication date: September 23, 2004Inventors: Lars G. Svensson, William C. Athas
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Patent number: 6696853Abstract: A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately-preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.Type: GrantFiled: October 14, 2002Date of Patent: February 24, 2004Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas
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Publication number: 20030128048Abstract: A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately-preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.Type: ApplicationFiled: October 14, 2002Publication date: July 10, 2003Inventors: Lars G. Svensson, William C. Athas
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Patent number: 6486697Abstract: A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second. level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.Type: GrantFiled: March 21, 2000Date of Patent: November 26, 2002Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas
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Patent number: 5559478Abstract: A power source, inductor and clamping device coupled to generate substantially sinusoidal drive pulses. The power source has an output capacitance. The inductor is connected to the power source and to the load to be driven. In combination with the inductor, the output capacitance of the power source and the input capacitance of the load to be driven create a resonant circuit which generates a stream of substantially sinusoidal pulses. A clamping device is connected to the inductor and prevents the stream of pulses which are driving the load from exceeding a clamping level. In one preferred embodiment, a complementary set of clamping devices and inductors are used to generate a complementary set of pulse streams.Type: GrantFiled: July 17, 1995Date of Patent: September 24, 1996Assignee: University of Southern CaliforniaInventors: William C. Athas, Lars G. Svensson
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Patent number: 4161228Abstract: A crash detector is provided for controlling actuation of an actuator such as a release mechanism for seat belts, an air bag or the like. A main body such as a ball is located in a bore in a housing and retained by a first, relatively weak spring. A firing pin having a portion for actuating the actuator is axially movable in the housing bore. A second spring biases the firing pin towards an inoperative position. The firing pin is moved to an actuating position when the deceleration force acting on the vehicle, and hence the mass body, exceeds a predetermined magnitude.Type: GrantFiled: December 28, 1977Date of Patent: July 17, 1979Assignee: Forenade FabriksverkenInventors: Lars G. Svensson, Gustav Karlstedt, Claes Tisell, Yngve Thorstensson
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Patent number: RE38918Abstract: A system and method for efficiently charging and discharging a capacitive load from a single voltage source. The system includes a brat switch for selectively connecting the voltage source to the load and a second switch for selectively providing a short across the load as may he common in the art. A particularly novel aspect of the invention resides in the provision of plural capacitive elements and a switching mechanism for selectively connecting each of the capacitive elements to the load whereby the load is gradually charged or discharged. In the illustrative embodiment, the switching mechanism includes a set of switches for selectively connecting each of the capacitive elements to the capacitive load and a switch control mechanism for selectively activating the switches.Type: GrantFiled: January 10, 2001Date of Patent: December 13, 2005Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas, Jeffrey G. Koller
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Patent number: RE42066Abstract: A system and method for efficiently charging and discharging a capacitive load from a single voltage source. The system includes a first switch for selectively connecting the voltage source to the load and a second switch for selectively providing a short across the load as may be common in the art. A particularly novel aspect of the invention resides in the provision of plural capacitive elements and a switching mechanism for selectively connecting each of the capacitive elements to the load whereby the load is gradually charged or discharged. In the illustrative embodiment, the switching mechanism includes a set of switches for selectively connecting each of the capacitive elements to the capacitive load and a switch control mechanism for selectively activating the switches.Type: GrantFiled: January 21, 2005Date of Patent: January 25, 2011Assignee: University of Southern CaliforniaInventors: Lars G. Svensson, William C. Athas, Jeffrey G. Koller