Patents Represented by Attorney, Agent or Law Firm Frohwitter
  • Patent number: 6340360
    Abstract: An implantable infection shield and system for drug delivery in vascular tissue includes a relatively non-biodegradable porous linked fibrous biomaterial which controls and directs cell growth and angiogenesis from adjacent vascular tissue into the implant. Infection shield embodiments stimulate cell growth and angiogenesis from adjacent vascular tissue which effectively blocks passage of pathogenic microorganisms along percutaneously implanted objects. In embodiments for drug delivery, a reservoir of the same biomaterial may contain either (1) a cell culture system enclosed within a porous sealable interior chamber or (2) a biodegradable matrix in which one or more drugs are dispersed. After implantation of a reservoir of the first embodiment in an organism, cultured cells obtain food and oxygen via diffusion in tissue fluid through the porous walls of the interior chamber, while metabolic products, including drugs, diffuse away from the cell culture in an analogous manner.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: January 22, 2002
    Assignee: MED USA
    Inventors: Mark B. Lyles, Charles A. McLaughlin, Glenn A. Halff, William A. Mallow
  • Patent number: 6191701
    Abstract: A method and system for the remote control of devices having a secure self learn capability. The system includes an encoder and a decoder, the encoder encoding variable information including a user key using a non-linear algorithm to produce an encoded value transmitted to the decoder, the decoder decoding the value using the same algorithm. In a learning mode a new encoder is to be added to the system. The new encoder produces an encoded value using a key generation seed. The decoder, upon receiving the encoded key generation seed, produces a decoding key based upon the decoded key generation seed. The decoding key is stored in the decoder memory allowing valid recognition of the new encoder in a secure manner.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: February 20, 2001
    Assignee: Microchip Technology Incorporated
    Inventor: Frederick Johannes Bruwer
  • Patent number: 6183672
    Abstract: An extrusion die for extruding biodegradable material, the extrusion die including: a mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between the outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: February 6, 2001
    Assignee: Standard Starch, LLC
    Inventors: Hans G. Franke, Donald R. Bittner
  • Patent number: 6182705
    Abstract: An improved, cost-effective, insulated flexible pipeline that is insulated with a bituminous composition.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: February 6, 2001
    Inventor: Glen R. Sumner
  • Patent number: 6180433
    Abstract: A combination inductive coil and integrated circuit semiconductor chip is provided in a single lead frame package. The lead frame is preferably made of a copper alloy and has a flat configuration. The chip is electrically connected to end portions of the inductive coil thus permitting the inductive coil to function as an antenna for the chip.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: January 30, 2001
    Assignee: Microchip Technology Incorporated
    Inventors: Lee Furey, Joseph Fernandez
  • Patent number: 6103576
    Abstract: A merged two-transistor memory cell of an EEPROM, and method of fabricating the cell, are provided. The memory cell includes a substrate and gate oxide layer formed on the substrate. It also includes a memory transistor having a floating gate and a control gate, and a select transistor having a gate that is shared with the memory transistor. The memory cell is configured so that the shared gate serves both as the control gate of the memory transistor and the wordline of the select transistor. The memory cell further includes a dielectric layer that is disposed between the floating gate and the shared gate. The dielectric layer is defined by an ONO film and a stacked oxide layer. In fabricating the memory cell, the ONO stack film is formed adjacent to the top surface of the floating gate and the stacked oxide layer is formed adjacent to the side surface of the floating gate.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: August 15, 2000
    Assignee: Microchip Technology Incorporated
    Inventors: Neil Deustcher, Jack Wong
  • Patent number: 6086559
    Abstract: A process and a device for pressure controlled manipulation of a fluid (4a), in particular for medicinal applications. The device comprises a receptacle (1a) of variable volume to contain the fluid (4a), a pressure creation device (2a) for producing pressure on the fluid (4a), an opening (1c) for admitting and/or discharging to fluid (4a), a measuring channel (2e) of prescribed cross-section connected to the receptacle (1a), and a buffer (2d) of prescribed volume which communicates with the measuring channel (2e), the measuring channel (2e) and the buffer (2d) being filled with a compressible medium. The pressure creation device is preferably a piston (2a) which can be pushed into the receptacle (1a), the piston being sealed to the inner wall of the receptacle (1a) by a sealing means (2c).
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: July 11, 2000
    Inventor: Dietmar Enk
  • Patent number: 6078966
    Abstract: A storage device for directly fetching external data and for relaying the transfer of data, wherein a CD-R drive unit 13 is provided, as a data input device, with a computer input/output terminal 35, a card reader unit 18 for reading the data of a PC card 20, an infrared ray communication port 16, and a modular jack 17. When switches 26 and 28 are horizontally connected in the drawing, the data fetched by data input devices other than the computer input/output terminal 35 are written into a CD-R 32 and are stored. When a switch 34 is flipped to the left tilted direction in the drawing, the data written into the CD-R 32 are read out and output to the body 12 of a desk-top personal computer.
    Type: Grant
    Filed: January 5, 1998
    Date of Patent: June 20, 2000
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Kazuo Kobayashi, Hiromu Koyauchi, Sinji Tsuyuki
  • Patent number: 6072476
    Abstract: An image display device includes a main body having a display unit with a first display screen A and a display unit with a second display screen B and a link 56 for merging the two display screens to one. The two display units are opened and closed at the link so that the display screens are folded over each other for carrying like a book, and they are opened in a use mode to permit the recognition of the display image.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: June 6, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Harada, Terumasa Kayashima, Tatsuhiro Nozue
  • Patent number: 6062786
    Abstract: A lead-in point on an end of an externally threaded fastener has a shape in any axial section defined by a curve tangent to the inside of a cylinder formed about the thread axis. The cylinder is of a diameter smaller than the smallest permissible minor (inner) diameter of a mating internal thread, but preferably larger than the minor diameter of the external thread. The length of the lead-in point is preferably from one to three thread pitches. The curved surface of the lead-in point is such that at any practical angle of insertion (where thread engagement is possible), the dimensional characteristics of the lead-in point present only a curved surface (not an edge) for possible contact with the internal threads. This length also insures that the end of the fastener is small enough to feed into internal threads at all angles where such thread contact is effective in producing a threaded joint.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: May 16, 2000
    Inventors: Michael A. Garver, Jerry J. Goodwin, Anthony L. Snoddy
  • Patent number: 6062695
    Abstract: A projection type liquid crystal display device, including: irradiation means having a function of irradiating light emitted from a light source upon an irradiated surface; a liquid crystal display element for modulating the light; and projection means for projecting the light emitted from said liquid crystal display element, wherein said irradiation means comprises: at least one reflection mirror; a polarization beam splitter for dividing the light from the light source into P polarization light and S polarization light; a .lambda.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: May 16, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Kakuda, Satoshi Ouchi, Masahiko Yatsu, Naohiro Ozawa, Yutaka Matsuda, Takuya Shiaki
  • Patent number: 6058012
    Abstract: A thermal management controller to regulate the operating temperature of high speed, high circuit density semiconductor dice in an electronic product. The thermal management controller monitors the temperature of a heat sink in thermal contact with the high speed, high circuit density semiconductor dice and also monitors the operational status of one or more specified devices which may increase the heat load within the electronic product. As the temperature of the heat sink increases and/or as specified devices increase the heat load in the electronic product, the thermal management controller will start cooling fans and/or increases the speed of the cooling fans to increase heat removal from the electronic product by forced convection.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: May 2, 2000
    Assignee: Compaq Computer Corporation
    Inventors: Patrick R. Cooper, William C. Hallowell, Mark S. Tracy, Curtis Progl, Minh H. Nguyen
  • Patent number: 6041645
    Abstract: A system for detecting fugitive emissions including emissions from valves and bolted flange connections. The system includes (1) enclosures for valves and pipe flange connections, and (2) an indicating cartridge (detector/signaler) in communication with said enclosures.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: March 28, 2000
    Assignee: Fugitive Emissions Detection Devices, Inc.
    Inventors: Rick A. Lawson, Michael S. Kelly
  • Patent number: 6009404
    Abstract: The invention pertains to a process and a device for cost-oriented monitoring and/or display of the operating state of a replaceable or regenerable, fluid (7) traversed conditioning device (1), particularly a filter (4), in an overall system.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: December 28, 1999
    Assignee: Tepcon Engineering Gesellschaft GmbH
    Inventor: Klaus Eimer
  • Patent number: 6002638
    Abstract: A memory device with a switchable clock output. The memory device has a data pin, a clock input pin, and a clock output pin. The memory device is designed to be wired up to a plurality of other memory devices in a daisy chain manner. The clock input pin of the first memory device would be serially coupled to the first memory device. The clock output pin of each memory device would be serially coupled to the clock input pin of a directly successive memory device. The processor can then interrogate the first memory device for the identification information it contains. Once this information is obtained, the processor can issue a command to deactivate the first memory device from responding to bus commands, as well as to output the clock signal via the clock output pin to a directly successive memory device. The processor may then interrogate the next memory device.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: December 14, 1999
    Assignee: Microchip Technology Incorporated
    Inventor: Nathan John
  • Patent number: 6002655
    Abstract: There are provided a plurality of information recording surfaces to be reproduced on one side of an optical disc to be reproduced, and when accessing control of an optical pickup over a plurality of recording layers is performed, first, a beam focal point of the optical pickup is moved using a moving means to the recording layer on which target information is recorded to thereby perform switching processing of information recording layers during reproduction, after which accessing control of the optical pickup is performed using control processing means similar to the access between the same recording layers, and with respect to the pausing operation, in a layer in which information is recorded from the inner circumference to the outer circumference, one track jumping is repeated toward the inner circumference, while in a layer in which information is recorded from the outer circumference to the inner circumference, one track jumping is repeated toward the outer circumference.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: December 14, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhiko Ono, Eiji Ikeda, Hiroshi Minoda, Akio Fukushima, Hiroaki Shioyama, Shigeki Inoue
  • Patent number: D438511
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: March 6, 2001
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Atsushi Nishio, Yoshikazu Abe
  • Patent number: D438512
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: March 6, 2001
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Atsushi Nishio, Yoshikazu Abe
  • Patent number: D438842
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: March 13, 2001
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Atsushi Nishio, Yoshikazu Abe
  • Patent number: D427767
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: July 11, 2000
    Inventor: Gwenda Dorothy Young