Patents Represented by Attorney Eugene Lieberstein
  • Patent number: 5805120
    Abstract: A head-up display apparatus includes a display device for displaying various items of information and a combiner provided in front of an eye of a viewer in a visual field of the viewer, which combiner allows an outside image lying in the visual field to be passed through it and which reflects an image displayed by the display device so that the outside image passed (transmitted) through the combiner and the displayed image reflected thereby are integrated in the same visual field of the viewer, the combiner being configured to be of a substantially spherical shape with a concave surface facing the viewer, and the display device being provided in such a position that a display can be directly observable from the outside through the combiner.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: September 8, 1998
    Assignee: Sega Enterprises, Ltd.
    Inventors: Satoshi Yamada, Eiji Takuma
  • Patent number: 5798075
    Abstract: This invention is directed to a method for shifting the mosaic spread of highly oriented pyrolytic graphite ("HOPG") into a preselected narrow range. The method involves selecting HOPG samples having a mosaic spread which lies below a desired mosaic spread range and cold working the selected samples to form a textured surface sufficent to shift the mosaic spread of the samples into the desired mosaic spread range. The textured surface is preferably imprinted by pressing the samples between metal dies with at least one of the dies having a knurled surface.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: August 25, 1998
    Assignee: Advanced Ceramics Corporation
    Inventor: Arthur William Moore
  • Patent number: 5748436
    Abstract: An electrostatic chuck and method for electrostatically clamping a working member such as a semiconductor wafer to the chuck. The elcetrostatic chuck includes at least one conductive electrode and an insulating layer for separating the conductive electrode from the working member. The insulating layer is composed of a composition containing pyrolytic boron nitiride (PBN) and a carbon dopant in an amount above 0 wt % and less than about 3 wt % such that its electrical resistivity is smaller than 10.sup.14 .OMEGA.-cm. A source of voltage is impressed across the conductive electrode to generate an electrostatic field which causes the working member to be clamped to the chuck.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: May 5, 1998
    Assignee: Advanced Ceramics Corporation
    Inventors: Junich Honma, Kotaro Mino, Hisayuki Miyata, Haruhide Inoue
  • Patent number: 5693581
    Abstract: In accordance with the present invention a pyrolytic boron nitride compact having an electrical resistivity smaller than about 10.sup.14 .OMEGA.-cm is formed by the process of introducing a feed gas of gaseous boron halide and ammonia at a suitable ratio into a furnace heated to a temperature between 1600.degree. C. to 2200.degree. C. with the furnace containing a substrate of graphite to form a deposit of pyrolytic boron nitride upon said substrate, substantially simultaneously introducing a hydrocarbon gas into the furnace to form a codeposit of carbon in the crystal structure of the pyrolytic boron nitride deposit, controlling the mole fraction of said hydrocarbon gas to limit the concentration of carbon to less than about 3 wt % of the pyrolytic boron nitride composition.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: December 2, 1997
    Assignee: Advanced Ceramics Corporation
    Inventors: Junichi Honma, Kotaro Mino
  • Patent number: 5681883
    Abstract: The present invention relates to a boron nitride composition of particles of boron nitride and a nonionic surfactant for use as a filler with a distribution of agglomerates having an average particle size in the range of between 20-80 microns and to a molding compound having a high thermal conductivity of above at least 5 W/m.degree. K. The molding compound comprises a polymer base material, a filler and a nonionic surfactant with the filler comprising boron nitride in a concentration of at least 60% by weight of said composition and wherein the nonionic surfactant is selected from the class consisting of carboxylic acid amides and carboxylic acid esters.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: October 28, 1997
    Assignee: Advanced Ceramics Corporation
    Inventors: Richard Frank Hill, Stephen Phillip DaVanzo
  • Patent number: 5678832
    Abstract: Boron nitride formed to an optimum density and composition of soluble borates and oxygen forms a material which deforms under pressure and reforms to make a very low permeability seal. The boron nitride seal is formed by precompacting a boron nitride powder having a soluble borate concentration of between 0.5 and 1.90% by weight, hot pressing the powder to a density of about 1.85 g/cc and machining the hot pressed powder into a seal of desired shape.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: October 21, 1997
    Assignee: Advanced Ceramics Corporation
    Inventor: Richard Frank Hill
  • Patent number: 5671322
    Abstract: A resistant heated flash evaporator including a body of any desired geometry having two opposite open sides, a cavity which forms a continuous open area extending from each of the two opposite sides and at least one metal evaporating surface facing the open area for evaporating metal laterally through the opposite sides of the cavity. The body is preferably composed of graphite and has a coating of pyrolyric boron nitride extending over a substantial portion of the body and over the metal evaporating surface formed by the cavity.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: September 23, 1997
    Assignee: Advanced Ceramics Corporation
    Inventor: Robert L. Finicle
  • Patent number: 5604164
    Abstract: A refractory boat formed from an intermetallic composite comprising titanium diboride and boron nitride or titanium diboride, boron nitride and aluminum nitride and further including a metal selected from molybdenum, tungsten, tantalum and niobium and an oxide of CaO or Y.sub.2 O.sub.3 with the minimum concentration of oxide of from 0.7 wt % and with a maximum combined concentration of metal and oxide not exceeding 20 wt %. The invention is also directed to a method for forming a hot pressed refractory boat of an intermetallic composite composition as indicated above which is hot pressed at about 1900.degree. C.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: February 18, 1997
    Assignee: Advanced Ceramics Corporation
    Inventors: Lionel C. Montgomery, Ajoy Zutshi
  • Patent number: 5537507
    Abstract: A flash evaporator heater including a substrate formed of an intermetallic compound or of graphite and having an outer coating composed of pyrolytic boron nitride or pyrolytic graphite. The substrate has a substantially rectangular configuration with a substantially flat upper surface and a recessed cavity. The cavity has a longitudinal cross sectional geometry which forms a slope intersecting the substantially flat upper surface of the substrate at an angle .alpha. of less than 60 degrees.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: July 16, 1996
    Assignee: Advanced Ceramics Corporation
    Inventors: John T. Mariner, Timothy J. Hejl, Douglas A. Longworth, Lawrence E. Finley
  • Patent number: 5536592
    Abstract: The galvanic battery of the present invention supplies the anode and/or cathode from an elongated strip of flexible tape preferably interconnected through a strip of inactive material functioning as a leader for said tape and for separating the tape entering the electrochemically active compartment of the battery housing from spent tape exiting the electrochemically active compartment. The battery is preferably constructed to include a supply reel having a rotatable core upon which said strip of tape is wound in a cylindrical configuration with the inner winding of tape extending from said core and being threaded through said electrochemically active compartment before being connected back into the electrochemically inactive compartment and wound as the outer winding around the core of the supply reel.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: July 16, 1996
    Assignee: Biocybernetics Laboratories, Inc.
    Inventors: Salvatore A. Celeste, Anthony J. Cucinotta, Guy A. Rossi
  • Patent number: 5505767
    Abstract: Sulfuric acid fumes generated in a manufacturing process are captured at the point of generation and transported at a flow rate of 3500 feet per minute to a filtration unit having a primary two-stage separator and a final three-stage separator. The primary separator is filled with spherical packing material, preferably of polypropylene, and the final separator consists of a composite pad of high efficiency filamentary packing material, preferably of polypropylene with increasingly smaller voids. Sulfuric acid is recovered from both separators for reuse and purified air is exhausted from the system. The removal efficiency exceeds 99%.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: April 9, 1996
    Inventor: Cheryl Minor
  • Patent number: 5505908
    Abstract: Unused methyl bromide from a fumigation cycle is captured by adsorption on a molecular sieve and recycled for reuse or recovery by desorption with hot gas without the need to purge the fumigation chamber with outside air. The loss of methyl bromide to the atmosphere is minimal.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: April 9, 1996
    Assignee: Halozone Technologies, Inc.
    Inventor: Moez Nagji
  • Patent number: 5498442
    Abstract: A fluidized bed reactor arrangement and method for forming a metal carbide coating on a substrate containing graphite in which a bed of particles inclusive of the substrate is fluidized using a fluidizing gas containing a metal halide vapor formed by reacting a metal halide gas with a carbide forming metal selected from Group IVb through VIIb of the periodic table and maintaining the temperature of the fluidized bed above 1500.degree. C.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: March 12, 1996
    Assignee: Advanced Ceramics Corporation
    Inventor: Jeffery W. Lennartz
  • Patent number: 5495550
    Abstract: A flash evaporator vaporization vessel for flash evaporating metal under conditions of repeated thermal cycling having a graphite body, an outer layer of pyrolytic boron nitride and an intermediate layer of a material selected from the group consisting of pyrolytic graphite, boron carbide (B.sub.4 C), tantalum carbide, and silicon carbide and having a thickness of no greater than about 0,002 inches.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: February 27, 1996
    Assignee: Advanced Ceramics Corporation
    Inventors: John T. Mariner, Douglas A. Longworth
  • Patent number: 5493630
    Abstract: A resistance heated evaporator includes a body of graphite having a generally rectangular geometry with opposite ends each of which has four sides. A coating of pyrolytic boron nitride covers substantially the entire surface of three of the sides at each end so as to form a channel which provides structural support at each end. At least one side at each end remains open for electrical contact to a power supply.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: February 20, 1996
    Assignee: Advanced Ceramics Corporation
    Inventors: John T. Mariner, Timothy J. Hejl
  • Patent number: 5429781
    Abstract: The method of the present invention comprises preparing a liquid slurry composed of a refractory material in powder form and a deflocculent composed of a vinyl chloride and vinyl acetate resin dissolved in an organic solvent and cold pressing and pressureless sintering to form a shaped refractory article.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: July 4, 1995
    Assignee: Advanced Ceramics Corporation
    Inventor: Lionel C. Montgomery
  • Patent number: 5401696
    Abstract: A ceramic composition and method for making ceramic composites having superior erosion and corrosion resistance to molten metal. The composite includes mullite, aluminum nitride and boron nitride in combination. The composite may be hot pressed or cold formed and pressureless sintered into a desired shape.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: March 28, 1995
    Assignee: Advanced Ceramics Corporation
    Inventor: Lionel C. Montgomery
  • Patent number: 5396913
    Abstract: A cosmetic applicator comprising a base support having a substantially nonabsorbent surface, and a coating existing essentially of a composition of lip cosmetic. The composition has an amorphous, noncrystalline structure, and the coating is of a thickness of between 0.5 mils and 5 mils. The applicator permits the cosmetic to be applied with relative ease.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: March 14, 1995
    Inventor: Gunnar J. Wallschlaeger
  • Patent number: 5395180
    Abstract: The vaporization vessel includes a body of substantially rectangular configuration having an upper relatively flat surface and a recessed cavity formed in the body with said cavity having a lateral cross sectional geometry which forms an included angle at the intersection with said substantially flat upper surface of greater than 120 degrees.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: March 7, 1995
    Assignee: Advanced Ceramics Corporation
    Inventor: John T. Mariner
  • Patent number: D369399
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: April 30, 1996
    Assignee: LRH, Limited Company
    Inventor: Alan B. Dworetzky