Patents Represented by Law Firm Spencer & Frank
  • Patent number: 6019587
    Abstract: A stamper plate attaching/detaching device of an injection mold for forming an optical disc substrate wherein a stamper plate is supported in a cavity which is formed by a cavity side disc cavity plate, a movable disc cavity plate, and a cavity ring. The stamper plate attaching/detaching device is equipped with a section for holding the outer circumferential rim of the stamper plate by means of the inner circumferential rim of the cavity ring, which inner circumferential rim is larger than the outer diameter of the stamper plate. A plurality of pairs of permanent magnets, which have magnetic poles in parallel with respect to a central line are buried, with phase differences, on the same radial line of the cavity side disc cavity plate and the movable disc cavity plate. The cavity ring rotates between a first angle position and a second angle position in relation to the cavity side disc cavity plate and the movable disc cavity plate.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: February 1, 2000
    Assignee: Seikoh Giken Co., Ltd.
    Inventors: Mitsuo Takahashi, Katsuyuki Yasuda
  • Patent number: 5978101
    Abstract: In an image detection device comprising at least one column arrangement consisting of photo detector elements linearly arranged in a row, an image field will be swung alternately across the photo detector elements in both longitudinal directions of the column arrangement. For time-correct summing and output of the detector signals, the photo detector elements of one column arrangement will be connected with a TDI arrangement. The TDI arrangement features a switch arrangement comprising several switches as well as a memory unit containing several memory cells. By appropriate control of the switch arrangement, its switches will be set such that the detector signals generated in the photo detector elements by one and the same image field pixel will be integrated into one and the same memory cell of the memory unit.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: November 2, 1999
    Assignee: Temic Telefunken microelectronic GmbH
    Inventors: Karl Hofmann, Reinhard Oelmaier
  • Patent number: 5964794
    Abstract: An implantable stimulation electrode for use with an implantable tissue stimulator, in particular a pacemaker, defibrillator, bone or neurostimulator, having a metal substrate body and a coating, applied to the substrate body, for reducing the electrode impedance and/or increasing the tissue compatability, in which a ultrathin, specifically functionalized organic coating forming the entire outer surface of the stimulation electrode is provided, which adheres to the underlying surface as a consequence of irreversible physisorption or covalent chemical bonding.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: October 12, 1999
    Assignees: Biotronik Mess- und Therapiegeraete GmbH & Co. Ingenieurbuero Berlin, Max-Planck-Gensellschaft zur Foerderung der Wissenschaften e.V. Berlin
    Inventors: Armin Bolz, Ronald Froehlch, Martin Stelzle, Johannes Schmitt, Anke Diederich, Thorsten Cassier, Roland Wagner
  • Patent number: 5939027
    Abstract: A process for discharging a reactor characterized by reducing the volume of a powder without compacting it, including treating the powder in a densification zone including at least one Archimedes' screw arranged in a barrel. The Archimedes' screw may also have both a reduction in pitch and an increase in diameter of the shaft. The densification zone may also contain two co- or counterrotating screws arranged in a barrel and exhibiting a reduction in the pitch of the screws. Densification zones consisting of two co-rotating screws give particularly good results.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: August 17, 1999
    Assignee: Solvay Polyoletins Europe-Belsium (SA)
    Inventor: Jean-Jacques Ruelle
  • Patent number: 5926759
    Abstract: The invention provides a system and method whereby a mobile station of telecommunications system selects one of a number of fixed ground stations by which the mobile station communicates with the public switched telephone network or other such system, selection being made by the mobile station receiving selected criteria and deriving from a plurality of these criteria a score for each of a plurality of the fixed stations, the fixed station via which communication is to be made being selected in dependence upon the score derived for that fixed station.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: July 20, 1999
    Assignee: GEC--Marconi Limited
    Inventor: Robert Anthony Severwright
  • Patent number: 5922813
    Abstract: Catalyst systems comprising, on the one hand, a catalytic solid based on complexed titanium trichloride and, on the other hand, a nonhalogenated organoaluminium activator. When employed in gas phase olefin polymerisation processes, these catalyst systems make it possible to manufacture a wide range of homopolymers and copolymers (random and block) with an isotacticity index which can be adjusted to very low values and with excellent pourability, even in the case of copolymers of high comonomer content. In the absence of transfer agents they also make it possible to synthesize polymers of very high molecular masses, with an increased activity. These polymerization processes yield particularly advantageous results in the case of propylene.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 13, 1999
    Assignee: Solvay Polyolefins Europe-Belgium
    Inventors: Jean-Louis Costa, Sabine Pamart, Gaetane Hallot
  • Patent number: 5916407
    Abstract: A process for producing an electrically conductive connection between opposite arranged contact areas of two elements that are to be connected, by means of a hot-melt type adhesive formed of electrically conductive particles, which are dispersed in a thermoplastic base material. The hot-melt type adhesive (22) is applied purposely only to the contact areas (16) of at least one of the elements (10, 28, 42, 50) and that these elements are joined under the effects of heat.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: June 29, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Werner Gruenwald, Ralf Haug, Thomas Burkhart, Martin Mennig, Helmut Schmidt
  • Patent number: 5910468
    Abstract: A process for the preparation of sulphurized calcium phenate from cashew nut shell liquid (CNSL). Distilled or hydrogenated distilled CNSL is reacted with calcium salt and sulphur in the presence of promoters to obtain a reaction mixture. The reaction mixture is subjected to the step of carbonation to obtain basic sulfurized calcium phenate, which may be subjected to a further step of basefication to obtain overbased sulphurized calcium phenate. Such a calcium phenate is added to lubricating oil or grease as an additive.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: June 8, 1999
    Assignee: Indian Oil Corporation Ltd.
    Inventors: Khem Chand Dohhen, Harish Chander Bhatia, Krishan Kumar Swami, Rakesh Sarin, Deepak Kumar Tuli, Madan Mohan Rai, Akhilesh Kumar Bhatnagar
  • Patent number: 5904963
    Abstract: A brick which can be laid with other similar bricks for forming a heat-insulating masonry work structure. The brick includes a plurality of webs defining empty inner cavities therebetween, the cavities having heat-insulating properties and further defining inner surfaces and a width of more than 8 mm. A heat-reflecting coating is disposed on the inner surfaces of the cavities. The masonry work structure may include a brick laying material for laying the bricks such that the bricks do not fill with the material and do not clog up with dirt, the brick laying material including one of bonding mortar, thin-bed mortar, mid-bed mortar and fibrous mortar. The coating may be applied to the inner surfaces of the cavities by one of vapor deposition, spraying and bonding on as a thin film, and may further be fired. The coating may further be sprayed, coextruded and spread and thereafter fired.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: May 18, 1999
    Assignee: Ziegeleien Freiburg & Lausanne AG Duedingen
    Inventor: Eduard Blatter
  • Patent number: 5902764
    Abstract: Catalyst systems comprising, on the one hand, a catalytic solid based on complexed titanium trichloride and, on the other hand, a nonhalogenated organolauminium activator.When employed in gas phase olefin polymerization processes, these catalyst systems make it possible to manufacture a wide range of homopolymers and copolymers (random and block) with an isotacticity index which can be adjusted to very low values and with excellent pourability, even in the case of copolymers of high comonomer content.In the absence of transfer agents they also make it possible to synthesise polymers of very high molecular masses, with an increased activity.These polymerization processes yield particularly advantageous results in the case of propylene.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: May 11, 1999
    Assignee: Solvay Polyolefins Europe - Belgium (Societe Anonyme)
    Inventors: Jean-Louis Costa, Sabine Pamart
  • Patent number: 5898192
    Abstract: A light emitting diode for generating preferably green light with improved luminous efficiency. A number of epitaxial layers suitable for the light emission is arranged on a doped semiconductor substrate wafer of GaP. The surface of the epitaxial layers is completely frosted. The light emission from the interior is considerably improved by the frosting. A contact layer structure is placed on the frosted surface for contacting the light emitting diode. The contact layer consists of several partial layers and covers at least a part the frosted surface. There is also a contact layer at the rear of the light emitting diode.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: April 27, 1999
    Assignee: Temic Telefunken microelectronic GmbH
    Inventor: Jochen Gerner
  • Patent number: 5898401
    Abstract: A continuous wave radar altimeter comprises a pulsed power control (4), operable when the signal-to-noise ratio of the received signal is likely to be too low, to pulse the transmitted power so that the power varies between a non-zero base level and a higher level. The receiver channel (13, 14) is switched off during each transmitted pulse.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: April 27, 1999
    Assignee: GEC-Marconi Limited
    Inventor: Raymond John Walls
  • Patent number: 5896018
    Abstract: A device for operating a windshield wiper with an automatic wiper control. A fast reaction to a suddenly occurring heavy wetting event is assured without adversely affecting the sequence of intermittent wiper operation. This is achieved by an evaluation unit which has a surge detection stage that makes it possible to detect, during intermittent operation when a sensor signal falls short of a surge threshold and by triggering a control signal for at least one wiping action when the signal falls short of the surge threshold.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: April 20, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Rainer Pientka, Henry Blitzke, Joerg Buerkle
  • Patent number: 5896378
    Abstract: An Add-Drop Multiplexer (ADMUX) for use in a synchronous digital hierarchy telecommunication system is provided with a by-pass whereby, in use, it can be made to interface with a higher bit rate transmission system.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: April 20, 1999
    Assignee: GPT Limited
    Inventor: Andrew James Barker
  • Patent number: 5893447
    Abstract: A transfer unit for products, wherein a transfer device, moving back and forth in a given direction, connects a first and second conveyor located side by side at a transfer station and presenting respective first and second pockets for conveying the products; the first conveyor being operated continuously; and each first pocket presenting a respective actuating device moving in time with the transfer device and for arresting the first pocket at the transfer station to transfer a product from the second conveyor to the first conveyor.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: April 13, 1999
    Assignee: O.A.M. S.p.A.
    Inventor: Renato Brintazzoli
  • Patent number: 5891169
    Abstract: A method for processing a signal characteristic of cardiac activity in the atrium (A) and/or ventricle (V) of a heart (H) and for evaluating this signal with a view to obtaining a control signal for a cardiac pacemaker and/or defibrillator (3) can be carried out by: receiving a time dependent signal from at least one intracardial signal sensor (1, 2) in the atrium and/or ventricle; feeding the signal picked up by each signal sensor (1, 2) to a read and evaluation circuit (6) with a threshold characteristic; comparing the signals with a detection threshold; evaluating the result of the comparison to obtain an indication as to the presence of normal sinus-type cardiac activity or fibrillations; and producing the control signal, which characterizes the comparison result.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: April 6, 1999
    Assignee: Biotronik Mess- und Therapiegeraete GmbH
    Inventors: Gustav Boheim, Paul Wyborny, Dennis Digby, Tran Thong, Max Schaldach
  • Patent number: 5892343
    Abstract: A windshield wiping arrangement with at least one wiper arm (11) is disclosed, which is operated by an electromotor (10) with reversible rotational direction. A time determination device (19) is provided, which determines the time (T.sub.n ; T.sub.n+1 ; T.sub.n+2 ; T.sub.n+3 ; T.sub.n+4) following the triggering of a wiping operation. Furthermore, a time presetting device (22) is provided, which presets a maximum allowable time (T.sub.max ; T.sub.max,n+1 ; T.sub.max,n+2 ; T.sub.max,n+3) for the duration of half of a wiping cycle. A comparator (21) detects a possibly existing time overrun and, with a time overrun signal (27), triggers a wiping operation in the opposite direction relative to the preceding wiping operation by reversing the electromotor (10). The windshield wiping arrangement according to the invention makes it possible to maintain a limited wiping operation when a blocking occurs (B1, B2, B3), as can be caused, for example, by a snow load on a windshield to be cleaned.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: April 6, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Rolf Mack, Stefan Koch
  • Patent number: 5890581
    Abstract: An arrangement for feeding transport containers of a sorting conveyor with flat mailed items includes a linear conveyor, having a direction of conveyance and a rearward end, for engaging one surface of the respective mailed items in a planar frictional lock and transferring the mailed items in the direction of conveyance to the transport containers at the rearward end of the linear conveyor. A rotary body having a cylindrical surface including a contact region and being rotatable around an axis extending perpendicularly to the direction of conveyance of the linear conveyor is arranged at the rearward end of the linear conveyor for contacting an opposite surface of the respective mailed item in a frictionally locked manner with the contact region of its cylindrical surface during transfer of the mailed items to the transport vehicles.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: April 6, 1999
    Assignee: Grapha-Holding AG
    Inventors: Jean-Claude Oppliger, Thomas Zimmermann
  • Patent number: 5891693
    Abstract: The present invention relates to vectors useful for transforming a lymphoid cell line to glutamine independence. The vectors comprise an active glutamine synthetase (GS) gene as well as a heterologous gene of interest to be expressed. The preferred embodiments encompass vectors wherein the heterologous gene is expressed from a relatively strong promoter and the GS gene is expressed from a relatively weak promoter. In one example, the heterologous gene is operatively linked to the hCMV-MIE promoter and the GS gene is operatively linked to the SV40 early region promoter.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: April 6, 1999
    Assignee: Alusuisse Holdings A.G.
    Inventors: Christopher Robert Bebbington, Geoffrey Thomas Yarranton, Richard H. Wilson
  • Patent number: 5884501
    Abstract: An ice-making machine includes a housing having a brine solution inlet to receive brine solution from which ice is to be made and having an ice-brine slurry outlet to permit the egress of an ice-brine slurry from the housing. A heat exchanger within the housing has a heat exchange surface. The heat exchanger further includes a refrigerant inlet, a refrigerant outlet and at least one refrigerant circuit interconnecting the refrigerant inlet and the refrigerant outlet to permit a flow of refrigerant through the heat exchanger to extract heat from the brine solution contacting the heat exchange surface. The at least one refrigerant circuit is constituted by refrigerant passages integrally formed in a body portion of the housing. A blade assembly within the housing carries a plurality of blades each of which is in contact with the heat exchange surface.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: March 23, 1999
    Inventor: Vladimir Goldstein