Patents Represented by Attorney Dennis H. Epperson
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Patent number: 6057555Abstract: A high-frequency wireless communication system on a single ultrathin silicon on sapphire chip is presented. This system incorporates analog, digital (logic and memory) and high radio frequency circuits on a single ultrathin silicon on sapphire chip. The devices are fabricated using conventional bulk silicon CMOS processing techniques. Advantages include single chip architecture, superior high frequency performance, low power consumption and cost effective fabrication.Type: GrantFiled: October 26, 1998Date of Patent: May 2, 2000Assignee: Peregrine Semiconductor CorporationInventors: Ronald E. Reedy, Mark L. Burgener
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Patent number: 5895957Abstract: A process is disclosed for preparing a silicon-on-sapphire wafer suited for fabrication of fully depleted field effect transistors. A fully depleted field effect transistor (FET) which has minimum parasitic charge in the conduction channel and a process to make same are described. The device is made in and relies on the silicon layer on sapphire which has minimal charge intentionally introduced into the conduction channel. Both N-type and P-type transistors are described. Methods for defining threshold voltage are also described. Specific examples of the devices are presented including specific materials selections for threshold voltage options.Manufacturing processes are described, including a preferred embodiment based on ultra thin silicon on sapphire. The devices can be fabricated using conventional silicon techniques; both silicided and non-silicided versions are presented.Type: GrantFiled: January 3, 1997Date of Patent: April 20, 1999Assignee: Peregrine Semiconductor CorporationInventors: Ronald E. Reedy, Mark L. Burgener
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Patent number: 5883396Abstract: A high-frequency wireless communication system on a single ultrathin silicon on sapphire chip is presented. This system incorporates analog, digital (logic and memory) and high radio frequency circuits on a single ultrathin silicon on sapphire chip. The devices are fabricated using conventional bulk silicon CMOS processing techniques. Advantages include single chip architecture, superior high frequency performance, low power consumption and cost effective fabrication.Type: GrantFiled: October 17, 1996Date of Patent: March 16, 1999Assignee: Peregrine Semiconductor CorporationInventors: Ronald E. Reedy, Mark L. Burgener
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Patent number: 5871465Abstract: A remotely programmable infusion system. The remotely programmable infusion system comprises a memory for storing a programmable protocol and a remote communication port for sending a voice signal to a remote touch-tone transceiver and for receiving a remote programming signal from the remote touch-tone transceiver. The remotely programmable infusion system also comprises a voice storage unit for storing the voice signal. The remotely programmable infusion system further comprises a processor, coupled to the remote communication port, to the voice storage unit, and to the memory, for accessing the voice signal from the voice storage unit and the programmable protocol from the memory, and for processing the programmable protocol in response to receiving the remote programming signal.Type: GrantFiled: June 5, 1996Date of Patent: February 16, 1999Assignee: I-Flow CorporationInventor: Robert S. Vasko
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Patent number: 5861336Abstract: A high-frequency wireless communication system on a single ultrathin silicon on sapphire chip is presented. This system incorporates analog, digital (logic and memory) and high radio frequency circuits on a single ultrathin silicon on sapphire chip. The devices are fabricated using conventional bulk silicon CMOS processing techniques. Advantages include single chip architecture, superior high frequency performance, low power consumption and cost effective fabrication.Type: GrantFiled: November 30, 1995Date of Patent: January 19, 1999Assignee: Peregrine Semiconductor CorporationInventors: Ronald E. Reedy, Mark L. Burgener
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Patent number: 5771139Abstract: An integrated spring head/gimbal assembly holder is used to precisely load and unload a head/gimbal assembly (HGA) of the type used in magnetic disk drives. The holder includes a fixture base by which the holder is mounted. A first boss extending from the fixture base has a surface in which a recess is formed. The recess receives a second boss on the end of the HGA so that HGA rests on the surface of the first boss. A cantilevered beam extends from the fixture base and serves as a spring which includes a clamping head. Flexure of the cantilevered beam forces the clamping head to drive the second boss firmly against the sidewalls at the edge of the recess and to force the HGA against the surface of the boss. Thus, the HGA is precisely positioned and secured to the holder.Type: GrantFiled: August 3, 1995Date of Patent: June 23, 1998Assignee: Phase MetricsInventors: Patrick R. Lee, Arthur J. Cormier
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Patent number: 5741277Abstract: A method and device for the placement of sutures and for the purpose of approximating tissue. A particular utility is effected in the approximation of the tissue separated by means of an endosurgical trocar being inserted into a body cavity. The invention provides for the loading of suture material including needles into the device, introduction and placement of the device into the body cavity, with the distal end having deployable needle guides, extending the needle guides either simultaneously or individually to the periphery of the wound, engaging the wound with the needle guides, driving the needles and suture material through the tissue to be approximated into a catch mechanism, retracting the needle guides and withdrawing the device, leaving a loop of suture material in the margin of tissue. The suture may then be tied to approximate the wound and excess suture material cut off.Type: GrantFiled: June 25, 1996Date of Patent: April 21, 1998Assignee: Laurus Medical CorporationInventors: Norman S. Gordon, Robert P. Cooper, Gordon C. Gunn
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Patent number: 5741279Abstract: A method and device for the placement of sutures and for the purpose of approximating tissue. A particular utility is effected in the approximation of the tissue separated by means of an endosurgical trocar being inserted into a body cavity. The invention provides for the loading of suture material including needles into the device, introduction and placement of the device into the body cavity, with the distal end having deployable needle guides, extending the needle guides either simultaneously or individually to the periphery of the wound, engaging the wound with the needle guides, driving the needles and suture material through the tissue to be approximated into a catch mechanism, retracting the needle guides and withdrawing the device, leaving a loop of suture material in the margin of tissue. The suture may then be tied to approximate the wound and excess suture material cut off.Type: GrantFiled: November 6, 1996Date of Patent: April 21, 1998Assignee: Laurus Medical CorporationInventors: Norman S. Gordon, Robert P. Cooper
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Patent number: 5713910Abstract: A method and device for the placement of sutures and for the purpose of approximating tissue. A particular utility is effected in the approximation of the tissue separated by means of an endosurgical trocar being inserted into a body cavity. The invention provides for the loading of suture material including needles into the device, introduction and placement of the device into the body cavity, with the distal end having deployable needle guides, extending the needle guides either simultaneously or individually to the periphery of the wound, engaging the wound with the needle guides, driving the needles and suture material through the tissue to be approximated into a catch mechanism, retracting the needle guides and withdrawing the device, leaving a loop of suture material in the margin of tissue. The suture may then be tied to approximate the wound and excess suture material cut off.Type: GrantFiled: November 7, 1995Date of Patent: February 3, 1998Assignee: Laurus Medical CorporationInventors: Norman S. Gordon, Robert P. Cooper, Richard L. Quick
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Patent number: 5703683Abstract: An optical alignment device comprised of two "H" shaped structures may be used to precisely position an optical element in two orthogonal directions. Each "H" shaped web structure includes two flanges extending from opposite ends of a center web having a centroidal flexure axis. The "H" shaped structures also each include an aperture extending through the flanges and the web. The center webs may be resiliently flexed, allowing the angle between the flanges of each "H" shaped structure to be adjusted by rotating screws fitted through one flange and threaded to the other. The "H" shaped structures are mounted together so that their flexure axes are orthogonally oriented with respect to each other and so that the apertures of each structure are aligned to form an optical path cavity.Type: GrantFiled: May 28, 1996Date of Patent: December 30, 1997Assignee: Ohmeda Inc.Inventors: William C. Hunt, Torin T. Meyers
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Patent number: 5700272Abstract: A method and device for the placement of sutures and for the purpose of approximating tissue. A particular utility is effected in the approximation of the tissue separated by means of an endosurgical trocar being inserted into a body cavity. The invention provides for the loading of suture material including needles into the device, introduction and placement of the device into the body cavity, with the distal end having deployable needle guides, extending the needle guides either simultaneously or individually to the periphery of the wound, engaging the wound with the needle guides, driving the needles and suture material through the tissue to be approximated into a catch mechanism, retracting the needle guides and withdrawing the device, leaving a loop of suture material in the margin of tissue. The suture may then be tied to approximate the wound and excess suture material cut off.Type: GrantFiled: September 27, 1995Date of Patent: December 23, 1997Assignee: Laurus Medical CorporationInventors: Norman S. Gordon, Robert P. Cooper, Richard L. Quick
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Patent number: 5696445Abstract: A tester for measuring the resistance of magnetoresistive heads as a function of the magnetic field applied to the heads. The tester applies a time varying magnetic field to the magnetoresistive head to be tested and filters the resulting time varying (AC) voltage signal indicative of the resistance of the head with a capacitor to remove the DC component of the signal. The AC component of the signal is then amplified, digitized, and analyzed to obtain the resistance properties of the magnetoresistive head.Type: GrantFiled: September 26, 1994Date of Patent: December 9, 1997Assignee: Phase MetricsInventor: Michael Inbar
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Patent number: 5673109Abstract: A Raman gas analysis system uses a half-wave plate to match the polarization of Raman scattered light emitted from a gas analysis cell to a preferred polarization orientation of a diffraction grating. The gas analysis system includes a plasma discharge tube for generating a polarized light beam; a gas analysis cell for containing a sample gas which produces Raman scattered light in response to being irradiated with the polarized light beam; an optical subsystem for collecting and providing the Raman scattered light with a preferred polarization orientation; a holographic diffraction grating for dispersing the Raman scattered light into component light signals; and an array detector for detecting the component light signals.Type: GrantFiled: July 10, 1996Date of Patent: September 30, 1997Assignee: Ohmeda Inc.Inventor: Kevin A. Keilbach
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Patent number: 5671048Abstract: A slider is mounted to a rotary drive mechanism. The slider is loaded, i.e., moved toward and positioned near a disk surface, by rotary movement of the rotary drive mechanism in a first rotary direction. Similarly, the slider is unloaded, i.e., moved away from the disk surface, by rotary movement of the rotary drive mechanism in a second rotary direction which is the reverse direction of the first rotary direction.Type: GrantFiled: May 17, 1995Date of Patent: September 23, 1997Assignee: Phase MetricsInventor: Christopher Lacey
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Patent number: 5663570Abstract: A high-frequency wireless communication system on a single ultrathin silicon on sapphire chip is presented. This system incorporates analog, digital (logic and memory) and high radio frequency circuits on a single ultrathin silicon on sapphire chip. The devices are fabricated using conventional bulk silicon CMOS processing techniques. Advantages include single chip architecture, superior high frequency performance, low power consumption and cost effective fabrication.Type: GrantFiled: May 19, 1995Date of Patent: September 2, 1997Assignee: Peregrine Semiconductor CorporationInventors: Ronald E. Reedy, Mark L. Burgener
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Patent number: 5662664Abstract: A suturing device includes a shouldered surgical needle where the shoulder has a cross sectional transverse dimension. A suture is attached to a distal portion of the needle. A needle catch having a flexible aperture with a relaxed dimension which is smaller than the cross sectional transverse dimension of the shoulder allows insertion of the needle into the flexible aperture by expansion of the flexible aperture to a stretched dimension which is substantially equal to the cross sectional transverse dimension of the shoulder. The shoulder on the needle prevents removal of the needle from the flexible aperture in a direction which is the reverse of its direction of insertion into the flexible aperture.Type: GrantFiled: May 18, 1995Date of Patent: September 2, 1997Assignee: Laurus Medical CorporationInventors: Norman S. Gordon, Robert P. Cooper, Richard L. Quick
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Patent number: 5600169Abstract: A process is disclosed for preparing a silicon-on-sapphire wafer suited for fabrication of fully depleted field effect transistors. A fully depleted field effect transistor (FET) which has minimum parasitic charge in the conduction channel and a process to make same are described. The device is made in and relies on the silicon layer on sapphire which has minimal charge intentionally introduced into the conduction channel. Both N-type and P-type transistors are described. Methods for defining threshold voltage are also described. Specific examples of the devices are presented including specific materials selections for threshold voltage options.Manufacturing processes are described, including a preferred embodiment based on ultra thin silicon on sapphire. The devices can be fabricated using conventional silicon techniques; both silicided and non-silicided versions are presented.Type: GrantFiled: March 21, 1995Date of Patent: February 4, 1997Assignee: Peregrine Semiconductor CorporationInventors: Mark L. Burgener, Ronald E. Reedy
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Patent number: 5596404Abstract: A mechanism for aligning the elements of an optical system is disclosed. One aspect of the present invention is an alignment mechanism which includes lead screws placed on opposite corners of the elements to be aligned. The elements are provided with threaded holes of different pitch, and the lead screw is provided with threads of the same unequal pitches as the elements, thereby forming a differential lead screw. The threads include a locking thread which assures a positive lock between the lead screw and the elements to be aligned and eliminates backlash between them. Another aspect of the present invention is an interference fit mechanism which is provided by the employment of a slightly-oversized flexible boss which mates with a cavity. The boss is provided with a thin outer wall capable of flexing when the boss is inserted into the cavity. Yet another aspect of the present invention includes a wobble plate comprising a spherical socket and housing.Type: GrantFiled: December 30, 1994Date of Patent: January 21, 1997Assignee: Albion Instruments, Inc.Inventors: Kent F. Beck, Charles V. Owen
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Patent number: 5596205Abstract: A high-frequency wireless communication system on a single ultrathin silicon on sapphire chip is presented. This system incorporates analog, digital (logic and memory) and high radio frequency circuits on a single ultrathin silicon on sapphire chip. The devices are fabricated using conventional bulk silicon CMOS processing techniques. Advantages include single chip architecture, superior high frequency performance, low power consumption and cost effective fabrication.Type: GrantFiled: May 19, 1995Date of Patent: January 21, 1997Assignee: Peregrine Semiconductor CorporationInventors: Ronald E. Reedy, Mark L. Burgener
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Patent number: 5578044Abstract: A method and device for the placement of sutures and for the purpose of approximating tissue. A particular utility is effected in the approximation of the tissue separated by means of an endosurgical trocar being inserted into a body cavity. The invention provides for the loading of suture material including needles into the device, introduction and placement of the device into the body cavity, with the distal end having deployable needle guides, extending the needle guides either simultaneously or individually to the periphery of the wound, engaging the wound with the needle guides, driving the needles and suture material through the tissue to be approximated into a catch mechanism, retracting the needle guides and withdrawing the device, leaving a loop of suture material in the margin of tissue. The suture may then be tied to approximate the wound and excess suture material cut off.Type: GrantFiled: September 26, 1994Date of Patent: November 26, 1996Assignee: Laurus Medical CorporationInventors: Norman S. Gordon, Robert P. Cooper