Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7354675 | Apparatus and method for maintaining compression of the active area in an electrochemical cell An electrochemical cell includes a first electrode, a second electrode, a proton exchange membrane disposed between and in intimate contact with the electrodes, and a pressure pad disposed in electrical communication with the first electrode. The pressure pad is an ... | 04/08/2008 |
| 7129001 | Cell comprising a power-generating element fastened by sheets A cell such as a nonaqueous electrolytic secondary cell includes a plurality of power-generating elements which each include a strip-like positive electrode and a strip-like negative electrode that are both wound into an elliptic cylinder with a separator being inte... | 10/31/2006 |
| 7033697 | Battery unit and secondary battery employing the same A battery unit for a secondary battery that includes a positive electrode plate, a positive electrode tab, a negative electrode plate, a negative electrode tab, a separator, and short circuit preventing units, wherein the short circuit preventing units are formed on... | 04/25/2006 |
| 6899973 | Nonaqueous electrolyte secondary cells A nonaqueous electrolyte secondary cell comprises a rolled-up electrode unit 2 composed of a positive electrode 23, a negative electrode 21 and a separator 22 interposed therebetween, and a negative electrode current collector plate 3 ... | 05/31/2005 |
| 6743546 | Laminate sheath type battery Battery with a flexible laminate casing includes a means for fixing the electrode assembly (2) within the casing (1, 18). The fixing means may be a frame (19, 33, 38, 50, 54) attached to the periphery of the electrode assembly, or an insulating ... | 06/01/2004 |
| 6692863 | Nonaqueous electrolyte secondary cells and process for fabricating same A nonaqueous electrolyte secondary cell includes a rolled-up electrode unit composed of a positive electrode, a negative electrode and a separator interposed therebetween, and a negative electrode current collector plate and a positive electrode current c... | 02/17/2004 |
| 6670066 | Separator for fuel cell A separator for a fuel cell comprises a plate-shaped electrode having a pair of gas diffusion electrode plates and an electrolytic layer held by the gas diffusion electrode plates. The separator being layered on both surfaces of the electrode and forming ... | 12/30/2003 |
| 6544684 | Prismatic battery and method of manufacturing same Positive and negative electrode plates 2, 3 are alternately stacked upon one another with intervening separators 4 to constitute an electrode plate group 1. The respective electrode plates are laterally offset so that side edges of the electrode plates pr... | 04/08/2003 |
| 6515865 | Cylindrical battery clip for key fobs An improved and low cost electrical connection for use in circuit boards for key fobs incorporates a plurality of generally cylindrical pin members which are symmetric about a central axis. The use of the symmetric pin allows automatic insertion of the pi... | 02/04/2003 |
| 6475665 | Lead acid storage battery The present invention provides a lead acid storage battery keeping sufficient cycle life even under vibrating conditions. The lead acid storage battery of the present invention includes an assembly element that is obtained by alternately laying positive e... | 11/05/2002 |
| 6391488 | Non-aqueous electrolyte cell The present invention relates to an improved non-aqueous electrolyte cell comprising an anode, a cathode and a separator spirally wound so that the anode is disposed on the outer side of the cathode to form an electrode assembly. The outermost end of the ... | 05/21/2002 |
| 6383674 | Air-assisted electrochemical cell construction An electrochemical cell is disclosed including a cell housing, an ion-permeable, oxygen transmission restricting membrane that divides the interior of the cell housing into a first portion exposed to ambient air and a substantially air-tight second portio... | 05/07/2002 |
| 6379831 | Expanded nickel screen electrical connection supports for solid oxide fuel cells A solid oxide fuel assembly is made, wherein rows (14, 24) of fuel cells (16, 18, 20, 26, 28, 30), each having an outer interconnection (36) and an outer electrode (32), are disposed next to each other with corrugated, electrically conducting expanded met... | 04/30/2002 |
| 6372380 | Nonaqueous electrolyte secondary battery The present invention provides a nonaqueous electrolyte secondary battery comprising: a battery case; a battery element accommodated in the battery case, the battery element comprising laminations of a first polarity type electrode, a second polarity type... | 04/16/2002 |
| 6071651 | Resilient battery separator media and a battery including the resilient separator media A resilient battery separator, especially suited for use in a starved electrolyte battery, is made of an air laid fibrous mat of randomly oriented, entangled microfibers having a mean diameter between 0.5 and 2.0 microns. The air laid mat weighs between 5... | 06/06/2000 |
| 6015635 | Electrode for fuel cell and method of manufacturing electrode for fuel cell In a catalyst electrode 23, a plurality of catalyst clusters 30 and a plurality of electrolyte clusters 32 are connected and entwined with each other. Each catalyst cluster 30 is formed by aggregation of a plurality of carbon particles 36 with a catalyst ... | 01/18/2000 |
| 5989750 | Lead-acid battery separator and method for producing thereof A separator contains thermoplastic synthetic fiber, and acid-resisting oxidation-resisting inorganic filler, wherein the cumulative volume of pores having a pore size not smaller than 1 μm is not larger than 20% of the cumulative volume of all pores, and... | 11/23/1999 |
| 5776630 | Separator with longitudinal and transverse ribs for use in accumulators Separators for use in accumulators are provided with integral longitudinal and transverse ribs. The separators have an increased transverse and longitudinal rigidity thus permitting a clear reduction in the sheet thickness. They are preferably provided in... | 07/07/1998 |
| 5773161 | Bipolar separator A bipolar separator which is formed from a plate having opposing first and second surfaces which are compatible with fuel gas and an oxidant gas, respectively. The plate is formed with a central area, first and second opposing troughs extending from first... | 06/30/1998 |
| 5665487 | Water-acivated storage battery The cathode of the water-activated battery is a chloride member with a silver coating on its surface or it is a silver-chloride cathode. The anode is a magnesium plate. The anode and cathode are spaced apart with a rigid spacer member. A battery casing en... | 09/09/1997 |
| 5665488 | Method of making a battery separator and the battery separator produced thereby A method of making a battery separator useful in flooded cell type lead acid batteries comprising providing a sheet of microporous polyolefin material having two planar surfaces, forming at least one hollow rib extending from one of the planar surfaces, a... | 09/09/1997 |
| 5650241 | Metal-air cell battery A metal-air battery assembly having plurality of free standing metal-air cells forming a cell group within a battery case assembly. Each free standing cell has flexible, compressible walls capable of containing electrolyte, the walls comprising air cathod... | 07/22/1997 |
| 5645955 | Battery A device for a battery with a spacer preventing direct physical contact between first and second batteries arranged in physical series. A resilient conductor providing an electroconductive contact between a center electrode of the first battery and a term... | 07/08/1997 |
| 5558958 | Flexible core spacer for storage bateries A flexible spacer for positioning a cell element in a cell compartment of a container of a storage battery includes a sheet member folded over on itself to a U-shaped configuration with the space between opposing surfaces of the sheet member defining a co... | 09/24/1996 |
| 5437941 | Thin film electrical energy storage device An electrical energy storage device (10). An electrode (12) consisting of a thin film of metal or metal oxide is deposited on a substrate (24), preferably by sputtering. Spherical plastic spacers (16) are uniformly dispersed on the electrode at a maximum ... | 08/01/1995 |
| 5264304 | Battery separators with T-shaped ribs A sheet product useful as a battery separator in the form of a microporous base sheet having spaced T-shaped (cross-sectional) ribs extending from one surface of the base sheet.... | 11/23/1993 |
| 5250372 | Separator for mat-immobilized-electrolyte battery An electrolyte-immobilizing mat for a mat-immobilized-electrolyte battery comprising a plurality of randomly oriented resilient fibers resistant to and wettable by sulfuric acid electrolyte, wherein the mat is held in a stressed, precompressed state by a ... | 10/05/1993 |
| 5240468 | Method of making a mat-immobilized-electrolyte battery An electrolyte-immobilizing mat for a mat-immobilized-electrolyte battery comprising a plurality of randomly oriented resilient fibers resistant to and wettable by sulfuric acid electrolyte, wherein the mat is held in a stressed, precompressed state by a ... | 08/31/1993 |
| 5219673 | Cell structure for electrochemical devices and method of making same An electrochemical device comprises a plurality of cells, each cell including a laminate cell membrane, made up of a separator/electrolyte means interposed between alternating positive and negative electrodes, each type of electrode being respectively in ... | 06/15/1993 |
| 5128218 | Sealed lead-acid battery A sealed lead-acid battery which includes a container accommodating an assembled element. The assembled element has at least one electrochemically formed positive plate having a grid of an antimony-free alloy, wherein the plate is made of porous active ma... | 07/07/1992 |
| 5116701 | Microporous separator composed of microspheres secured to an electrode strip An electrode and separator composite composed of an electrode strip, such as a lithium strip, having a microporous separator secured to its surface in which the separator comprises a layer of insulating microspheres, such as glass microspheres measuring f... | 05/26/1992 |
| 4781997 | Storage battery that is protected against the discharge of acid The invention concerns a storage battery that is protected against the discharge of acid, with fleece separators which completely fill the space between the electrode plates. It is proposed that spacers be built into the fleece separators during a prelimi... | 11/01/1988 |
| 4652504 | Secondary battery having a separator A secondary battery prevents a localized formation of dendritic metal zinc during a charging and increases a current efficiency as far as possible. The secondary battery includes a negatively active material of a metallic ion, a positive electrode, a nega... | 03/24/1987 |
| 4490447 | Battery separators Novel, improved battery separators carrying a plurality of polymeric ribs on at least one separator surface. The battery separators are produced by extruding a plurality of ribs in the form of molten polymeric rib providing material onto the surface of a ... | 12/25/1984 |
| 4448862 | Lead storage battery The coating of the microporous separators of lead storage batteries with a highly porous glass wool mat on the side facing the negative electrode plates promotes the electrolyte exchange at these plates and also counteracts the tendency toward crumbling a... | 05/15/1984 |
| 4403024 | Battery separator A battery separator having a planar back web and a plurality of ribs on at least one face with the ribs being sinusoidal like in configuration.... | 09/06/1983 |
| 4400447 | Combined current collector and electrode separator This relates to reactive metal cells wherein there is a cathode and a consumable anode. It is necessary to separate the cathode from the anode so that an electrolyte may constantly flow over the face of the anode opposing the cathode. It has been found th... | 08/23/1983 |
| 4396689 | Separator-spacer for electrochemical systems An electrochemical cell construction features a novel co-extruded plastic electrode in an interleaved construction with a novel integral separator-spacer. Also featured is a leak and impact resistant construction for preventing the spill of corrosive mate... | 08/02/1983 |
| 4360576 | Lead accumulator Lead accumulator which comprises a plurality of elements each consisting of a negative plate, a positive plate and separating means intercalated between these plates, the said separating means comprising a first and a second microporous separator, between... | 11/23/1982 |
| 4209575 | Multi-cell batteries A multi-cell battery is disclosed which comprises a stacked arrangement of frames having a number of side-by-side active paste support areas which form plates. Electrolyte-porous separator members are provided between adjacent plates in adjoining frames. ... | 06/24/1980 |
