Patents by Inventor Richard Stokes

Richard Stokes 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).

  • Publication number: 20060214222
    Abstract: Various embodiments for improved power devices as well as their methods of manufacture, packaging and circuitry incorporating the same for use in a wide variety of power electronic applications are disclosed. One aspect of the invention combines a number of charge balancing techniques and other techniques for reducing parasitic capacitance to arrive at different embodiments for power devices with improved voltage performance, higher switching speed, and lower on-resistance. Another aspect of the invention provides improved termination structures for low, medium and high voltage devices. Improved methods of fabrication for power devices are provided according to other aspects of the invention. Improvements to specific processing steps, such as formation of trenches, formation of dielectric layers inside trenches, formation of mesa structures and processes for reducing substrate thickness, among others, are presented.
    Type: Application
    Filed: May 31, 2006
    Publication date: September 28, 2006
    Inventors: Ashok Challa, Alan Elbanhawy, Thomas Grebs, Nathan Kraft, Dean Probst, Rodney Ridley, Steven Sapp, Qi Wang, Chongman Yun, J. Lee, Peter Wilson, Joseph Yedinak, J. Jung, H. Jang, Babak Sani, Richard Stokes, Gary Dolny, John Mytych, Becky Losee, Adam Selsley, Robert Herrick, James Murphy, Gordon Madson, Bruce Marchant, Christopher Rexer, Christopher Kocon, Debra Woolsey
  • Publication number: 20060214221
    Abstract: Various embodiments for improved power devices as well as their methods of manufacture, packaging and circuitry incorporating the same for use in a wide variety of power electronic applications are disclosed. One aspect of the invention combines a number of charge balancing techniques and other techniques for reducing parasitic capacitance to arrive at different embodiments for power devices with improved voltage performance, higher switching speed, and lower on-resistance. Another aspect of the invention provides improved termination structures for low, medium and high voltage devices. Improved methods of fabrication for power devices are provided according to other aspects of the invention. Improvements to specific processing steps, such as formation of trenches, formation of dielectric layers inside trenches, formation of mesa structures and processes for reducing substrate thickness, among others, are presented.
    Type: Application
    Filed: May 31, 2006
    Publication date: September 28, 2006
    Inventors: Ashok Challa, Alan Elbanhawy, Thomas Grebs, Nathan Kraft, Dean Probst, Rodney Ridley, Steven Sapp, Qi Wang, Chongman Yun, J.G. Lee, Peter Wilson, Joseph Yedinak, J.Y. Jung, H.C. Jang, Babak Sani, Richard Stokes, Gary Dolny, John Mytych, Becky Losee, Adam Selsley, Robert Herrick, James Murphy, Gordon Madson, Bruce Marchant, Christopher Rexer, Christopher Kocon, Debra Woolsey
  • Publication number: 20050167742
    Abstract: Various embodiments for improved power devices as well as their methods of manufacture, packaging and circuitry incorporating the same for use in a wide variety of power electronic applications are disclosed. One aspect of the invention combines a number of charge balancing techniques and other techniques for reducing parasitic capacitance to arrive at different embodiments for power devices with improved voltage performance, higher switching speed, and lower on-resistance. Another aspect of the invention provides improved termination structures for low, medium and high voltage devices. Improved methods of fabrication for power devices are provided according to other aspects of the invention. Improvements to specific processing steps, such as formation of trenches, formation of dielectric layers inside trenches, formation of mesa structures and processes for reducing substrate thickness, among others, are presented.
    Type: Application
    Filed: December 29, 2004
    Publication date: August 4, 2005
    Applicant: Fairchild Semiconductor Corp.
    Inventors: Ashok Challa, Alan Elbanhawy, Thomas Grebs, Nathan Kraft, Dean Probst, Rodney Ridley, Steven Sapp, Qi Wang, Chongman Yun, J.G. Lee, Peter Wilson, Joseph Yedinak, J.Y. Jung, H.C. Jang, Babak Sani, Richard Stokes, Gary Dolny, John Mytych, Becky Losee, Adam Selsley, Robert Herrick, James Murphy, Gordon Madson, Bruce Marchant, Christopher Rexer, Christopher Kocon, Debra Woolsey
  • Publication number: 20040114351
    Abstract: Apparatus for simulating flames and producing a more realistic flame effect is provided. The apparatus comprises a light source to illuminate at least one flame element which is movably suspended within the apparatus, and viewed through a diffusing screen. The apparatus includes a means for simulating airborne burning embers which comprises the tape used as the suspending means for the flame elements. The apparatus also includes reflective flicker flame elements to produce a variation in the colour and intensity of the flame effect produced. In has been found that the realism of the flame effect can be enhanced if the top of the flame element it is angled rearwards with respect to the viewing screen.
    Type: Application
    Filed: October 16, 2003
    Publication date: June 17, 2004
    Inventors: Richard Stokes, Dominic Begley
  • Patent number: 6473861
    Abstract: An encryption-decryption disk drive arrangement has a recordable disk and is configured so that data can be securely stored on the disk. The drive housing or enclosure is sealed, and any attempt to open the housing or to access the internal electronics will cause the encryption/decryption keys and firmware to be erased from EEPROMs in the drive. The drive can be configured so that data are encrypted and distributed between two disks, which can be a writeable CD ROM disk and a magnetic disk. With this disk drive arrangement, the encryption and decryption operations take place in the drive, and do not affect the motherboard or daughterboards of the associated computer. This arrangement can also be used to authenticating or verifying digitally stored documents and records.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: October 29, 2002
    Inventor: Richard A. Stokes
  • Patent number: 5546908
    Abstract: A plural fuel system for internal combustion engines in which the efficiency of the engine is raised by burning fuels singly or in combination with other liquid, gasified, or gaseous fuels, which best meet the load, speed, and environmental demands placed on the engine. A microprocessor-controlled air compressor adjusts the volume of air entering the engine cylinders, adjusting the effective compression ratio and charge density of the engine in accordance with the fuel or fuels being burned, while maintaining precise air/fuel ratios. Environmental conditions such as air temperature, altitude, coolant temperature, etc. are also sensed, processed, and adjusted by the microprocessor through various input and output devices in real time.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: August 20, 1996
    Inventor: Richard A. Stokes
  • Patent number: 5526797
    Abstract: Modifications to the cylinder head of internal combustion engines in which the efficiency of fuel combustion is raised by the use of a plurality of liquid, vaporized liquid, and gaseous fuels through the alteration of cylinder compression ratios and spark timing to burn those fuels. It has been demonstrated that certain fuels have salient advantages under specified engine speed and load conditions, and in selected enviroments and vehicle applications, but that no single fuel is capable of excelling in all potential application scenarios. Burning each of these fuels efficiently has required engine specifications optimized to a single fuel or fuel state, such as compression ratio, intake tract design, electronic fuel injector duration and timing, and spark timing curves, which have been severely compromised when they were required to cope with the demands of a second fuel.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: June 18, 1996
    Inventor: Richard A. Stokes
  • Patent number: 4870515
    Abstract: A recording and/or reproducing device, such as a cassette tape player, records data on the cassette in advance of the recorded material, to identify the recorded selections by artist, title, etc., and also to identify the position at which each of the recorded selections begins. When the tape is played back, this header data is read from the tape, and the artist, title and location data are stored in memory. The stored title and artist data are displayed, and can be scrolled by a user. The user then selects a desired one of the recorded selections based on the displayed artist and title data. The player automatically advances the tape or other record medium to the beginning of the desired selection based on the location data stored in the memory. A number of selections can be automatically played in this fashion in the order desired. The apparatus can be an automotive tape player, wherein the associated display unit is a heads-up display reflected in the vehicle windshield.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: September 26, 1989
    Inventor: Richard A. Stokes
  • Patent number: 4225920
    Abstract: In a microprogrammed data processing pipeline system comprising a plurality of stages, microinstructions for controlling the stages are stored as templates in an addressable template micromemory store and are provided automatically and sequentially to the stages of the pipeline system. Operation microcode is introduced for a particular stage after the templates are issued from the micromemory store but before provision thereof to the pipeline system, thereby allowing a single template to control a plurality of different operations of a particular stage within the pipeline system. Provision is also made to freeze or inhibit the issuance of subsequent templates during the execution of excessively long operations in the particular stage.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: September 30, 1980
    Assignee: Burroughs Corporation
    Inventor: Richard A. Stokes
  • Patent number: D513579
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: January 17, 2006
    Assignee: Elemental Tools, L.L.C.
    Inventors: Launce Reed Barber, Thomas Richard Stokes