Patents by Inventor Steven J. Sherman
Steven J. Sherman 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: 11958003Abstract: A filter housing assembly for fluid filtration which may be attached to, and removed from, a filter base by a push-actuated release. The filter housing assembly has a top portion with an ingress port and egress port extending therefrom, and a protrusion extending from the filter housing longitudinally axial center. The ingress and egress port are formed in an hourglass shape. A filter key having a base with a groove for mating with said projection, at least one finger extending from said base, and an electronic circuit component housing attached thereto for receiving a printed circuit board, is connected to the filter housing top portion by mating said top portion protrusion with the filter key groove. Both of said ingress and egress port have at least one cavity for the passage of fluid therethrough, where each cavity is exposed in a direction facing away from the printed circuit board.Type: GrantFiled: July 18, 2022Date of Patent: April 16, 2024Assignee: KX TECHNOLOGIES LLCInventors: Robert Astle, George Lauri, Stephen P. Huda, Michael J. Sherman, Steven J. Haehn, Erik R. Klimpel, Will Anniss, Willard Grant, Raony Barrios, William Small, Marcello Correa Machado, Thomas W. McCollough, Christopher Rousey, Ramesh Subramanian
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Patent number: 11918280Abstract: Methods and systems for combining ablation therapy with navigation of the ablation device. An ablation system may be configured for use with one of two methods to prevent loss of navigation signals during ablation energy delivery. In the first method, ablation energy signals are filtered from the navigation signal. In the second method, the delivery of ablation energy is sequenced with the delivery of navigation energy such that ablation energy and navigation energy are not delivered at the same time and navigation signals received by the system are time-division multiplexed to reconstruct the navigation signals and determine a location of the device within the patient.Type: GrantFiled: June 18, 2020Date of Patent: March 5, 2024Assignee: Medtronic Ablation Frontiers LLCInventors: Marshall L. Sherman, Catherine R. Condie, Trenton J. Rehberger, Steven J. Fraasch, Mark T. Stewart
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Publication number: 20030098699Abstract: A capacitive sensing circuit coupled to a variable capacitor. The circuit comprises a sense pulse generator providing a first polarity sense pulse and a second polarity sense pulse; a sense capacitor coupled to the sense pulse generator; a charge detector coupled to the sense capacitor; and a storage device coupled to the charge detector. The storage device may be a sample and hold circuit, a capacitor or a buffer. Multiple capacitors may be provided to enable a position detection scheme which is suitable for use in an optical mirror switching array. An analog to digital converter may be coupled to the storage device and a digital demodulator device coupled to the output of the analog to digital converter.Type: ApplicationFiled: November 16, 2001Publication date: May 29, 2003Inventors: Mark A. Lemkin, Jason C. Jones, Steven J. Sherman, Thor N. Juneau, William A. Clark
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Patent number: 6192757Abstract: A monolithic capacitance-type microstructure includes a semiconductor substrate, a plurality of posts extending from the surface of the substrate, a bridge suspended from the posts, and an electrically-conductive, substantially stationary element anchored to the substrate. The bridge includes an element that is laterally movable with respect to the surface of the substrate. The substantially stationary element is positioned relative to the laterally movable element such that the laterally movable element and the substantially stationary element form a capacitor. Circuitry is disposed on the substrate and operationally coupled to the movable element and the substantially stationary element for processing a signal based on a relative positioning of the movable element and the substantially stationary element. A method for fabricating the microstructure and the circuitry is disclosed.Type: GrantFiled: December 6, 1999Date of Patent: February 27, 2001Assignee: Analog Devices, Inc.Inventors: Robert W. K. Tsang, Theresa A. Core, Steven J. Sherman, A. Paul Brokaw
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Patent number: 6009753Abstract: A monolithic capacitance-type microstructure includes a semiconductor substrate, a plurality of posts extending from the surface of the substrate, a bridge suspended from the posts, and an electrically-conductive, substantially stationary element anchored to the substrate. The bridge includes an element that is laterally movable with respect to the surface of the substrate. The substantially stationary element is positioned relative to the laterally movable element such that the laterally movable element and the substantially stationary element form a capacitor. Circuitry may be disposed on the substrate and operationally coupled to the movable element and the substantially stationary element for processing a signal based on a relative positioning of the movable element and the substantially stationary element. A method for fabricating the microstructure and the circuitry is disclosed.Type: GrantFiled: December 2, 1998Date of Patent: January 4, 2000Assignee: Analog Devices, Inc.Inventors: Robert W. K. Tsang, Theresa A. Core, Steven J. Sherman, A. Paul Brokaw
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Patent number: 5858809Abstract: A method and apparatus for providing a conductive plane beneath a suspended microstructure. A conductive region is diffused into a substrate. A dielectric layer is added, covering the substrate, and then removed from a portion of the conductive region. A spacer layer is deposited over the dielectric and exposed conductive region. A polysilicon layer is deposited over the spacer layer, and formed into the shape of the suspended microstructure. After removal of the spacer layer, the suspended microstructure is left free to move above an exposed conductive plane. The conductive plane is driven to the same potential as the microstructure.Type: GrantFiled: March 18, 1997Date of Patent: January 12, 1999Assignee: Analog DevicesInventors: Kevin Hin-Leung Chau, Roger T. Howe, Richard S. Payne, Yang Zhao, Theresa A. Core, Steven J. Sherman
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Patent number: 5847280Abstract: A monolithic capacitance-type microstructure includes a semiconductor substrate, a plurality of posts extending from the surface of the substrate, a bridge suspended from the posts, and an electrically-conductive, substantially stationary element anchored to the substrate. The bridge includes an element that is laterally movable with respect to the surface of the substrate. The substantially stationary element is positioned relative to the laterally movable element such that the laterally movable element and the substantially stationary element form a capacitor. Circuitry may be disposed on the substrate and operationally coupled to the movable element and the substantially stationary element for processing a signal based on a relative positioning of the movable element and the substantially stationary element. A method for fabricating the microstructure and the circuitry is disclosed.Type: GrantFiled: May 23, 1995Date of Patent: December 8, 1998Assignee: Analog Devices, Inc.Inventors: Steven J. Sherman, Robert W. K. Tsang, Theresa A. Core, A. Paul Brokaw
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Patent number: 5640039Abstract: A method and apparatus for providing a conductive plane beneath a suspended microstructure. A conductive region is diffused into a substrate. A dielectric layer is added, covering the substrate, and then removed from a portion of the conductive region. A spacer layer is deposited over the dielectric and exposed conductive region. A polysilicon layer is deposited over the spacer layer, and formed into the shape of the suspended microstructure. After removal of the spacer layer, the suspended microstructure is left free to move above an exposed conductive plane. The conductive plane is driven to the same potential as the microstructure.Type: GrantFiled: December 1, 1994Date of Patent: June 17, 1997Assignee: Analog Devices, Inc.Inventors: Kevin Hin-Leung Chau, Roger T. Howe, Richard S. Payne, Yang Zhao, Theresa A. Core, Steven J. Sherman
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Patent number: 5540095Abstract: An accelerometer comprising a microfabricated acceleration sensor and monolithically fabricated signal conditioning circuitry. The sensor comprises a differential capacitor arrangement formed by a pair of capacitors. Each capacitor has two electrodes, one of which it shares electrically in common with the other capacitor. One of the electrodes (e.g., the common electrode) is movable and one of the electrodes is stationary in response to applied acceleration. The electrodes are all formed of polysilicon members suspended above a silicon substrate. Each of the capacitors is formed of a plurality of pairs of electrode segments electrically connected in parallel and, in the case of the movable electrodes, mechanically connected to move in unison. When the substrate is accelerated, the movable electrodes move such that the capacitance of one of the capacitors increases, while that of the other capacitor decreases.Type: GrantFiled: April 14, 1995Date of Patent: July 30, 1996Assignee: Analog Devices, Inc.Inventors: Steven J. Sherman, A. Paul Brokaw, Robert W. K. Tsang, Theresa Core
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Patent number: 5465604Abstract: An accelerometer comprising a microfabricated acceleration sensor and monolithically fabricated signal conditioning circuitry. The sensor comprises a differential capacitor arrangement formed by a pair of capacitors. Each capacitor has two electrodes, one of which it shares electrically in common with the other capacitor. One of the electrodes (e.g., the common electrode) is movable and one of the electrodes is stationary in response to applied acceleration. The electrodes are all formed of polysilicon members suspended above a silicon substrate. Each of the capacitors is formed of a plurality of pairs of electrode segments electrically connected in parallel and, in the case of the movable electrodes, mechanically connected to move in unison. When the substrate is accelerated, the movable electrodes move such that the capacitance of one of the capacitors increases, while that of the other capacitor decreases.Type: GrantFiled: April 12, 1994Date of Patent: November 14, 1995Assignee: Analog Devices, Inc.Inventor: Steven J. Sherman
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Patent number: 5417111Abstract: The invention is a monolithic sensor comprising a silicon substrate, a suspended polysilicon microstructure for sensing a condition disposed above and suspended from the substrate, and circuitry for resolving a signal based on said sensed condition, the circuitry including bipolar circuit elements and MOS circuit elements. One disclosed embodiment is particularly adapted for sensing acceleration by means of a differential capacitor arrangement in which one capacitor plate in the arrangement is moveable responsive to an acceleration.Type: GrantFiled: June 10, 1993Date of Patent: May 23, 1995Assignee: Analog Devices, Inc.Inventors: Steven J. Sherman, Robert W. K. Tsang, Theresa A. Core, A. Paul Brokaw
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Patent number: 5345824Abstract: An accelerometer comprising a microfabricated acceleration sensor and monolithically fabricated signal conditioning circuitry. The sensor comprises a differential capacitor arrangement formed by a pair of capacitors. Each capacitor has two electrodes, one of which it shares electrically in common with the other capacitor. One of the electrodes (e.g., the common electrode) is movable and one of the electrodes is stationary in response to applied acceleration. The electrodes are all formed of polysilicon members suspended above a silicon substrate. Each of the capacitors is formed of a plurality of pairs of electrode segments electrically connected in parallel and, in the case of the movable electrodes, mechanically connected to move in unison. When the substrate is accelerated, the movable electrodes move such that the capacitance of one of the capacitors increases, while that of the other capacitor decreases.Type: GrantFiled: March 4, 1993Date of Patent: September 13, 1994Assignee: Analog Devices, Inc.Inventors: Steven J. Sherman, A. Paul Brokaw, Robert W. K. Tsang, Theresa Core