Patents by Inventor Eric Saurer

Eric Saurer 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).

  • Patent number: 6731351
    Abstract: A display assembly is disclosed including an electro-optical cell (28), for example a liquid crystal cell, and a photovoltaic cell (61) acting as a back reflector. In order to improve the aesthetic appearance of the display, the photovoltaic cell (61) reflects predetermined wavelengths and thus exhibits a desired color in the transparent zones (90) of the electro-optical cell. In particular, the reflected light can be colored by reflection onto a multi-layered reflective filter including a transparent electrode (69) of the photovoltaic cell. This cell may form part of the dial of a watch.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: May 4, 2004
    Assignee: Eta SA Fabriques d'Ebauches
    Inventors: Rainer Platz, Eric Saurer, Naci Basturk
  • Patent number: 6459035
    Abstract: There is described a colored photovoltaic cell (1) with a semiconductor, preferably silicon, which has high efficiency and a pleasing colored appearance, allowing it to be used as a dial for a watch or another electronic apparatus powered by the cell. The cell includes a reflective metal substrate (2) serving as the bottom electrode, a stack of hydrogenated amorphous silicon layers forming p-i-n junctions (8), and a transparent top electrode (9). The latter may be coated with a layer (16) of slightly diffusing lacquer, which may be colorless or colored. The respective thicknesses e1 of the top electrode and e2 of the silicon are combined as a function of the refractive indices of the materials so as to produce an interferential reflection in a predetermined reflection spectrum.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: October 1, 2002
    Assignee: Asulab S.A.
    Inventors: Yvan Ziegler, Diego Fischer, Eric Saurer, René Viennet
  • Publication number: 20020027620
    Abstract: A display assembly is disclosed including an electro-optical cell (28), for example a liquid crystal cell, and a photovoltaic cell (61) acting as a back reflector for the latter. In order to improve the aesthetic appearance of the display, the photovoltaic cell (61) reflects predetermined wavelengths and thus exhibits a desired color in the transparent zones (90) of the electro-optical cell. In particular, the reflected light can be colored by reflection onto a multi-layered reflective filter including a transparent electrode (69) of the photovoltaic cell. This cell may form part of the dial of a watch.
    Type: Application
    Filed: July 23, 2001
    Publication date: March 7, 2002
    Applicant: Eta SA Fabriques d'Ebauches
    Inventors: Rainer Platz, Eric Saurer, Naci Basturk
  • Patent number: 6316283
    Abstract: The invention concerns a batch manufacturing method for a plurality of individual photovoltaic cells (22), including the following steps: (a) providing at least one strip (1) of conductive material, (b) cutting in succession in said strip (1) substrates (2) having the shape and the dimensions of the desired cells (22), (c) replacing the cut substrates (2) in the strip (1) (d) depositing semi-conductor materials (16) forming at least one n-i-p or p-i-n junction on one of the faces (4a) of the strip (2), (e) depositing a transparent layer of conductive material on top of said semi-conductor materials (16), (f) removing from the strip (1) the cut substrates (2) coated with said semi-conductor materials (16) and the upper electrode (18) to form individual photovoltaic cells (22) which are ready for use.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: November 13, 2001
    Assignee: Asulab SA
    Inventor: Eric Saurer
  • Publication number: 20010004900
    Abstract: There is described a colored photovoltaic cell (1) with a semiconductor, preferably silicon, which has high efficiency and a pleasing colored appearance, allowing it to be used as a dial for a watch or another electronic apparatus powered by the cell. The cell includes a reflective metal substrate (2) serving as the bottom electrode, a stack of hydrogenated amorphous silicon layers forming p-i-n junctions (8), and a transparent top electrode (9). The latter may be coated with a layer (16) of slightly diffusing lacquer, which may be colorless or colored. The respective thicknesses e1 of the top electrode and e2 of the silicon are combined as a function of the refractive indices of the materials so as to produce an interferential reflection in a predetermined reflection spectrum.
    Type: Application
    Filed: December 18, 2000
    Publication date: June 28, 2001
    Inventors: Yvan Ziegler, Diego Fischer, Eric Saurer, Rene Viennet
  • Patent number: 6229766
    Abstract: The invention concerns a dial, in particular for a timepiece, formed of a solar cell including a substrate, at least one plurality of superposed layers defining at least one n-i-p or p-i-n element and a conductive layer forming a first electrode arranged to be exposed to luminous radiation, characterised in that said electrode is formed of a partially reflective metal layer.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: May 8, 2001
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Diego Fischer
  • Patent number: 5959432
    Abstract: A device for charging a battery (11), comprising a photovoltaic cell power source (8) of which the output voltage (USC) is lower than the voltage (VDD) across the terminals of the battery. Said output voltage is raised by a voltage multiplier (26) controlled by a static unit (27) depending on the two respective voltage levels. The source may advantageously comprise a single cell (8). In a timepiece provided with said charging device, the static control unit (27) can also cut off the power supply to display means (13, 23) and time-keeping circuits (21, 22) when the voltage of the battery (11) is too low. The voltage multiplier may use the motor coil (13) of the display means or any other coil used in the timepiece.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: September 28, 1999
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Pierre-Andre Farine
  • Patent number: 5920167
    Abstract: A detection device has a transducer (10) for emitting and receiving series of ultrasonic pulses. An integrator (23) integrates echo signals resulting from ultrasonic pulses within a time window so as to produce an integral value. A time-delay circuit (28) is used to control the instant of opening T1 of a time window and a control circuit (25) determines an average value of a number of n integral values and for loading the values of the opening a instant T1 into the time-delay circuit (28) so as to maintain the average value at a steady value. The control circuit (25) determines the average value by loading a first value of T1 in the time-delay circuit before the integration of the first x echo signal and a second value of T1 in the time-delay circuit before the integration of the second n-x echo signals.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: July 6, 1999
    Assignee: Asulab, S.A.
    Inventors: Fridolin Wiget, Eric Saurer
  • Patent number: 5862046
    Abstract: This invention provides protection against power supply failure, in particular of electronic circuits of timepieces powered by photovoltaic batteries. The invention comprises a continuous electric power supply comprising: an electrical continuous source (G) coupled to a power output (VDD, GND); energy storing means (6); and a reversible dc/dc electric converter (5) coupled both to the power output (VDD, GND) and to the energy storing means (6). The converter (5) comprises switching means (T1, T2, T3, T4) for modifying its configuration. The power supply storing means (6) comprise essentially a capacitor (C). Preferably, the reversible converter (5) is a dc/dc converter, the converter being a voltage multiplier in a first configuration and being a voltage divider in a second configuration.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: January 19, 1999
    Assignee: Asulab S.A.
    Inventors: Pierre-Andre Farine, Rudolf Dinger, Eric Saurer
  • Patent number: 5818341
    Abstract: The invention concerns an ultrasonic detection device intended to detect the presence of foreign bodies, on the surface of a window comprising a first sheet having a first thickness, comprising a transducer co-operating with a first face of said first sheet, said transducer being able to emit an ultrasonic signal of frequency f.sub.t and also able to receive a reflected ultrasonic signal on a second face of the first sheet, the variation in said reflected signal being representative of the presence or absence of foreign bodies on said second face facing said transducer. This device is characterized in that the frequency f.sub.t is selected to satisfy the following equation:f.sub.K /100.ltoreq..vertline.f.sub.t -f.sub.K .vertline..ltoreq.f.sub.K /10where f.sub.K =K.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: October 6, 1998
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Roland Jeanmonod
  • Patent number: 5598380
    Abstract: The composite wall comprises a first sheet and second sheet separated by an intermediate layer as well as an ultrasonic detection device placed on a face of said second sheet and comprising a transducer element able to emit an incidental ultrasonic signal of frequence f, and able to receive an ultrasonic signal reflected on a face of said first sheet. The intermediate layer comprises at least facing the transducer element, an inserted element whose two faces are respectively in close contact with the first and second sheets. Further, the frequence f of the transducer element satisfies the following relationships:f.apprxeq.K.sub.1. V.sub.1 /2e.sub.1 .apprxeq.K.sub.2.V.sub.2 /2e.sub.2 .apprxeq.K.sub.3.V.sub.3 /2e.sub.3where K.sub.1, K.sub.2 and K.sub.3 are defined integers, e.sub.1, e.sub.2 and e.sub.3 are respectively the thickness of the first sheet, the second sheet and the inserted element, and V.sub.1, V.sub.2 and V.sub.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: January 28, 1997
    Assignee: Asulab, S.A.
    Inventors: Eric Saurer, Jean-Pierre Mignot, Roland Jeanmonod
  • Patent number: 5482570
    Abstract: The invention relates to a photovoltaic cell (1) comprising a substrate (2) having a support face (4) having a first electrode (6) thereon and a second electrode (10) spaced from the first electrode (6) by a plurality of layers (14, 16; 14, 24, 16) including at least one layer (14) of a semiconducting material with an active junction (J) interface thereat, said active junction (J) having a developed surface area greater than its projected surface area.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: January 9, 1996
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Michael Gratzel, Tobias Meyer
  • Patent number: 5441827
    Abstract: A regenerating photoelectrochemical cell (1) is disclosed having a first transparent substrate (2) which has thereon a first transparent electrode (6), a second transparent substrate (4) which has thereon a second transparent electrode (8) on which is deposited a first layer (10) of a photoelectrochemically active semiconductor oxide in the form of a porous nanostructure of sintered colloidal particles, the substrates (2, 4) being so disposed in relation to one another as to define a space filled with electrolyte (16), said electrolyte (16) impregnating the said porous structure in a manner such that it is in contact on the one hand with the first transparent electrode (6) disposed on the first transparent substrate (2) and on the other hand with the second transparent electrode (8) disposed on the second transparent substrate (4), and said second transparent substrate also having a second compact continuous semiconductor oxide layer (20) extending between the second transparent electrode (8) and the first se
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: August 15, 1995
    Assignee: Asulab S.A.
    Inventors: Michael Gratzel, Eric Saurer
  • Patent number: 5438556
    Abstract: The present invention provides a horological piece (P) comprising an energy source having at least one photovoltaic cell (1) capable of transforming luminous radiation into an electrical current. This photovoltaic cell includes an active surface (F) sensitive to luminous radiation. A horometrical movement (56) is supplied by the energy source and is capable of supplying time keeping information. A display (58) is adapted to receive the time keeping information supplied by the horometrical movement (56) and displays this information so that it is readable by a user. The active surface (F) of the photovoltaic cell (1) has at least one transparent region which at least partially covers the display (58). The invention may be applied to horological pieces without portable power sources, such as a battery.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: August 1, 1995
    Assignee: Asulab S.A.
    Inventors: Rudolf Dinger, Eric Saurer, Michael Graetzel
  • Patent number: 5436060
    Abstract: The invention concerns a window including at least a first sheet (16), a second sheet (18), said sheets being joined together by a connecting layer (20), characterised in that it also includes an ultrasonic device (12) placed between said sheets (16,18) and co-operating directly with a first face (24) of said first sheet (16) to detect the presence of foreign bodies on a second face (26) of said first sheet (16) opposite said first face (24), said device (12) comprising a transducer (28) able to emit, via a transmitting/receiving face, an incidental ultrasonic signal of wavelength .lambda. in said first sheet (16), the thickness of said first sheet being equal to K..lambda./2, where K is an integral number, and said transducer being able to receive, via said transmitting/receiving face a reflected ultrasonic signal representative of the presence or absence of said foreign bodies to generate a detection signal.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: July 25, 1995
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Bernard Duthe, Roland Jeanmonod
  • Patent number: 5407554
    Abstract: An electrochemical sensor having multiple measuring zones (34) that are sequentially insulatable, disposed on the circumference of an insulating disc (1) and associated with each other by peripheral current collectors (16, 17) which extend radially inward up to central zones where they form contacts (23, 24) for a measuring apparatus. The disc-sensor also has a device (6) for rotating the disc, and guide marks for positioning (11) and for isolating (7) the measuring zones (34), and may be contained in a housing (40). The invention is useful in the quantitative analysis of glucose.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: April 18, 1995
    Assignee: Asulab S.A.
    Inventor: Eric Saurer
  • Patent number: 5395504
    Abstract: A small sensor for an electrochemical measuring system composed of a measuring apparatus (50) having an electronic circuit (60), a connecting device (64), a positioning and advancing device (56, 57) and an eliminating device (59, 53). The apparatus is adapted to receive the sensor (40), which has a plurality of active, successively disposable measuring zones (34). The sensor has applications in the quantitative analysis of glucose in the blood.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: March 7, 1995
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Erik J. Frenkel, Jean-Paul Randin, Eric Hoffmann
  • Patent number: 4745035
    Abstract: The article is provided with a coating resisting wear and corrosion, such coating being for the most part made of a precious metal or alloy of a precious metal, for example gold or an alloy containing gold.The coating is made up of a first layer of such precious metal or alloy thereof comprising discrete inclusions of a metallic compound such as titanium nitride. These inclusions are deposited along with the precious metal in vapor phase and distributed in a substantially homogeneous manner through the entire thickness of the layer, said thickness being equal to or greater than 0.4 .mu.m. A second layer of precious metal or alloy thereof is located between the article and said first layer.The article may be a watch case, a bracelet link or a piece of jewelry.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: May 17, 1988
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Yves Ruedin, Jean-Paul Randin, Michel Sallin
  • Patent number: 4488818
    Abstract: A watch display comprises time display hands (3, 4) and a reflecting digital display (5) which acts as dial for the hands, the display being transparent under the effect of an electric field and opaque in the absence of the field.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 18, 1984
    Assignee: Asulab S.A.
    Inventors: Eric Saurer, Fereydoun Gharadjedaghi, Yves Ruedin
  • Patent number: 4308442
    Abstract: An electro-optic passive display cell including two glass plates positioned spaced from each other with the edges thereof sealed and having an active constituent disposed between said plates. The plates are maintained in spaced and sealed relationship by a frame-shaped distance-piece adhered to the plates by a layer of glass paste solidified by sintering. The cell is formed by applying a high frequency induction current to fuse the frame-shaped piece to at least one plate.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: December 29, 1981
    Assignee: Ebauches S.A.
    Inventors: Michel Sallin, Yves Ruedin, Eric Saurer