Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 6436581 | Alkaline electrolyte secondary electric cell An alkaline electrolyte secondary electric cell comprises at least one positive electrode and one negative electrode positioned on either side of a separator composed of polyolefin fibers grafted with a vinyl monomer. The cell contains a device for absorb... | 08/20/2002 |
| 6063518 | Sealed electrochemical cell equipped with a circuit-breaking terminal A sealed electrochemical cell (1) fitted with a circuit-breaking terminal (3) which ensures electrical connection between an external contact part (7) of the terminal and one (6) of the positive or negative electrodes of the cell, the external contact par... | 05/16/2000 |
| 6042970 | Method of forming a separator for alkaline electrolyte secondary electric cell An alkaline electrolyte secondary electric cell comprises at least one positive electrode and one negative electrode positioned either side of a separator composed of polyolefin fibers grafted with a vinyl monomer. The cell contains a device for absorbing... | 03/28/2000 |
| 5972534 | Cell containing a device for inserting a stack of electrodes and holding in place A cell contains a device for inserting a stack of electrodes and holding it in place. This device enables a stack of electrodes to be inserted and held in place in a container having a base and receiving a lid, the stack having two opposite plane faces an... | 10/26/1999 |
| 5932632 | Composition for a positive electrode, a method of preparing said composition, and the use of an organic acid compound for neutralizing LioH The present invention relates to the use of an organic acid compound for substantially eliminating the presence of free LiOH in an ink composition for positive electrodes, wherein said organic acid compound is chosen from the set constituted by: ()... | 08/03/1999 |
| 5928810 | Electrode with porous three-dimensional support Electrode including a paste containing particles of electrochemically active material and a conductive support consisting of a three-dimensional porous material comprising strands delimiting contiguous pores communicating via passages, characterized in th... | 07/27/1999 |
| 5902699 | Method of characterizing an electrode binder In a method of characterizing a polymer binder for cell electrodes in contact with an electrolyte and including a current collector and a paste containing an electrochemically active material and said binder, a spreading coefficient of the binder on the a... | 05/11/1999 |
| 5800945 | Sealed one-piece battery having an alkaline electrolyte The present invention relates to a sealed one-piece battery having an alkaline electrolyte and comprising a container made of at least two mutually-cooperating parts suitable for being bonded together by contact heat-fusion and made of a thermoplastic mat... | 09/01/1998 |
| 5691085 | Non-sintered electrode for an alkaline electrolyte secondary cell The present invention concerns an electrode for an alkaline electrolyte secondary cell, comprising a current collector supporting a paste containing an electrochemically active material and a binder, characterized in that said binder is a copolymer select... | 11/25/1997 |
| 5667915 | Electrode including a metal connection and a core having a fiber or foam-type structure for an electrochemical cell A method of bonding a metal connection to an electrode including a core having a fiber or foam-type structure for an electrochemical cell, in which method at least one metal strip is pressed against one edge of the core and is welded thereto under compres... | 09/16/1997 |
| 5659239 | Method and apparatus for charging sealed nickel-cadmium batteries A method of charging a sealed nickel-cadmium battery, in which the battery first is charged for a duration t1 at current I1, such that: Imin ࣘI1 ࣘImax with 0ࣘImin ࣘC1 and... | 08/19/1997 |
| 5641589 | Storage cell battery unit equipped with a cooling device A storage cell battery unit equipped with a cooling device that uses a circulating fluid, said battery including a housing made of plastic and constituted by a case (6) and a cover (7) heat-sealed thereon, said storage cell battery being characterized by ... | 06/24/1997 |
| 5638002 | Measurement circuit for a modular system of electrical cells connected in series, in particular for a system of the storage batterytype The circuit has a common measurement transducer together with individual measurement interfaces for each of the cells. Each interface has its own generator for defining a measurement signal relating to a characteristic of the associated cell, and each of ... | 06/10/1997 |
| 5576116 | Sealed storage cell operating at low pressure An electrochemical cell has an alkaline electrolyte comprising a stack placed in a container and composed of at least one anode and at least one cathode containing nickel hydroxide. An oxygen recombination system has at least one recombination electrode w... | 11/19/1996 |
| 5563494 | Method of monitoring the charging of sealed nickel storage cells, and a charger using the method A method of monitoring rapid charging of sealed nickel storage cells of the nickel-hydride type and of the nickel-cadmium type, said cells optionally being associated in a battery, wherein once said cells have been identified and a relationship for the he... | 10/08/1996 |
| 5554462 | Carbon anode for a lithium rechargeable electrochemical cell and a process for its production The present invention concerns a carbon anode for a lithium rechargeable electrochemical cell, comprising a graphite-containing carbon-containing material which includes, prior to electrical cycling, at least a first phase constituted by graphite having a... | 09/10/1996 |
| 5518840 | Electrode plate for an electrochemical cell and having a metal foam type support, and a method of obtaining such an electrode The electrode plate includes an active portion that is pasted with active material, and a plate head that is made up of three layers of compressed metal foam comprising: a non-pasted portion of height G of the support of the electrode plate; and two strip... | 05/21/1996 |
| 5471134 | Measuring apparatus with adjustable indicator for measuring the real load factor on an electricity source The invention relates to measuring apparatus for measuring the real load factor on an electricity source delivering an AC current to a consumer appliance, said apparatus comprising: a current sensor supplying a signal that is continuously proportional to ... | 11/28/1995 |
| 5384209 | Hydridable material for the negative electrode of a nickel-hydride storage cell The present invention provides a hydridable material for the negative electrode of a nickel-hydride storage cell mainly comprising a Laves phase of the C14 hexagonal type (MgZn2), characterized by the general formula: ##EQU1## where A... | 01/24/1995 |
| 5342708 | Separator for an alkaline storage cell A separator for an alkaline storage cell comprises: two sheets of felt (10, 20) made of polypropylene, polyamide, or polyethylene, and having a thickness lying in the range 0.1 mm to 0.4 mm; and an intermediate sheet (4) that is plane, microporous, and ma... | 08/30/1994 |
| 5296261 | Method of manufacturing a sponge-type support for an electrode in an electrochemical cell A method of manufacturing a sponge support made of a metal selected from nickel, copper and lead, including (a) impregnating a sponge made of an organic material based on polyurethane, polyester or polyether with a solution of a nitrite or a sulfate of th... | 03/22/1994 |
| 5268242 | Battery of nickel-hydrogen storage cells The invention relates to a battery of nickel-hydrogen storage cells, which battery includes a baseplate supporting the storage cells, each storage cell being held by a sleeve fixed to the baseplate, the battery further including electrical-protection comp... | 12/07/1993 |
| 5077153 | Process for making an electrode with a porous support for an electrochemical cell and electrode obtained by said process A process for making an electrode for an electrochemical cell includes loading a porous metal support with an active material, placing a porous metal electrical connector on the loaded support, and compressing the connector and the loaded support together... | 12/31/1991 |
| 4547441 | Electrochemical cell with negative active material based on an alkali or alkaline earth metal In an electrochemical cell the negative active material is an alkali or alkaline earth metal, such as lithium, and the electrolyte comprises a solute and at least one solvent selected from the liquid oxyhalides and which serves also as the positive active... | 10/15/1985 |
