Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8124270 | Prismatic sealed rechargeable battery, battery module, and battery pack A prismatic sealed rechargeable battery includes a substantially prismatic battery case that accommodates an electrode plate assembly and an electrolyte solution. The battery case is formed of metal. On a side face of the battery case, a thin plate is provided which... | 02/28/2012 |
| 7745043 | Fuel cell stack A planar fuel cell stack, having generators that generate electricity by an electrochemical reaction of a fuel and an oxidizing agent, the generators arranged on a same plane. A beading unit and a protruding portion are formed on a fastening plate and a separator so... | 06/29/2010 |
| 7470486 | Lithium secondary battery A lithium secondary battery, in which electrolyte impregnation capability is improved, even in the case of a high-density electrode assembly, by forming a bottom insulator plate with a structure to facilitate the impregnation of the electrode assembly with an electr... | 12/30/2008 |
| 7425387 | Separator for a lead storage battery The invention relates to a separator made of elastic plastic and suitable for use in a lead storage battery, and consisting of sheet material with an inner region and two peripheral regions and having ribs running in the longitudinal direction on at least one side, ... | 09/16/2008 |
| 7326486 | Separator for fuel cell A fuel cell-purposed separator has a gas channel that includes a plurality of stages connected via turnaround portions. A bypass is provided which connects an upstream-side stage to a downstream side stage. After flowing through the downstream-side stage, a gas is l... | 02/05/2008 |
| 7326491 | Electrochemical device An electrochemical device comprises collector plates having main parts and tab parts and being arranged such that the main parts oppose each other; a separator having a main part and a tab part and being arranged such that the main part is disposed between the main ... | 02/05/2008 |
| 7288340 | Integrated battery In order to enhance reliability of a battery against bending or twisting in particular, at least one cell group comprising 4 unit cells is formed on a flexible substrate. The cell group has a rectangular shape, and is divided into the 4 unit cells by strip-shaped po... | 10/30/2007 |
| 7238744 | Ultrahigh molecular weight polyethylene articles and method of manufacture An article of manufacture comprises an ultrahigh molecular weight polyethylene (UHMWPE) mixed with a processing oil and a lubricant selected from the group consisting of fatty acid esters, ethoxylated fatty acid esters, glycol esters, PEG esters, glycerol esters, et... | 07/03/2007 |
| 7208246 | Fuel cell with integrated heater and robust construction A fuel cell assembly including a substrate and an electrolyte disposed on the substrate and having a rib projecting out from the substrate. The rib has first and second side surfaces and a top surface. An anode is disposed on the first side surface and a cathode is ... | 04/24/2007 |
| 7097939 | Gel-forming battery separator Gel-forming battery separators and methods for constructing them. Particles are embedded into pores of a porous support to form a composite. The chemical make-up of surfaces of the particles includes a silanol group. The composite, when contacted with an effective a... | 08/29/2006 |
| 7094498 | Battery separator with battlemented rib A separator for a storage battery is a microporous membrane having a back web and a battlemented rib standing on the back web. ... | 08/22/2006 |
| 6921600 | Separator for fuel cell and method of manufacture therefor A separator (4) for a fuel cell (1a) is provided which allows effective use of heat generated in proximity to an electrolytic membrane (2) in order to melt frozen water in the gas diffusion electrodes (3a, 3b) ... | 07/26/2005 |
| 6855455 | Electrode unit for rechargeable electrochemical cells The invention relates to an electrode unit for rechargeable electrochemical cells, e.g. accumulator cells, whose energy storage properties are drawn from the deposition of an element such as metal or an alloy. The electrode unit has an electrode (2) and a por... | 02/15/2005 |
| 6709783 | Battery pack cooling structure In a battery pack 1 wherein prismatic battery modules 2 are arranged parallel with each other, cooling passages 7 are formed by interposing spacers 6 made of metallic material between mutually facing long side faces 2a, 2... | 03/23/2004 |
| 6641954 | Battery separator with mud rest protectors A battery separator for use in a flooded cell-type lead acid battery includes a separator that is wrapped around an electrode to form an enveloped electrode that is placed in a cell compartment having mud rests that separate mud deposited from the envelop... | 11/04/2003 |
| 6531245 | Fuel cell, separator for the same and method for distributing gas in fuel cell Separators for unit cells of a fuel cell each have a plurality of through holes extending therethrough and a recessed portion formed in a surface thereof. In a fuel cell incorporating such separators, the recessed portion of each separator forms an in-cel... | 03/11/2003 |
| 6528205 | Non-woven fabric separator for sealed electrolytic cells A separator for sealed cells is provided which attains a high degree of intimate contact with electrode plates, enables the cell to have reduced internal resistance, is less apt to suffer a fatigue phenomenon even upon repetitions of charge/discharge, and... | 03/04/2003 |
| 6511766 | Low cost molded plastic fuel cell separator plate with conductive elements A bipolar or unipolar separator plate for an electrochemical fuel cell is formed of an insulating slab of plastic material such as a polymer matrix having a plurality of electrically conductive elements embedded therein for conducting electricity from an ... | 01/28/2003 |
| 6478829 | Method for producing a battery with separators containing fusible binders A method for producing a battery separator from a slurry of fibers which are resistant to the chemicals which are found in a battery, and a thermoplastic binder for the fibers. The method comprises the steps of casting the slurry onto a screen, draining t... | 11/12/2002 |
| 6410183 | Battery separator with improved shoulders A battery separator for use in enveloping the plates of a flooded cell type lead acid battery. The separator has improved puncture resistance in the shoulder areas provided by a plurality of improved mini-ribs located therein. The mini-ribs have substanti... | 06/25/2002 |
| 6120939 | Meltblown fiber battery separator Battery separator comprising a consolidated nonwoven mat of ultrafine polymeric fibers in which at least 10% of said fibers have a diameter less than 1 micron and which mat has an average pore size of less than 3 μm. The fiber mat is formed by meltblowin... | 09/19/2000 |
| 6103417 | Flat elementary electrochemical cell and precursor element The invention discloses a flat elementary electrochemical cell including first and second electrode foils between which there are two layers of permeable separator material for an electrolyte under pressure. According to the invention, this cell includes ... | 08/15/2000 |
| 6001503 | Battery separator having a puncture-proof border A microporous polymer battery separator having a puncture-proof corrugated border along the lateral edges thereof.... | 12/14/1999 |
| 5998059 | Cylindrical battery employing a separator having a protruding part A battery electrode separator having a protrusion includes a rectangular band and a protruding part with a width and height at one end of and transverse to the band. A cylindrical alkaline battery employs the separator. Since the separator having a protru... | 12/07/1999 |
| 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 |
| 5985484 | Battery separation A battery separator for use in flooded cell type lead acid batteries comprising a backweb of a porous, acid resistant, embossable material with a plurality of major ribs and submini-ribs extending across the width of the backweb from at least one planar s... | 11/16/1999 |
| 5981107 | Lithium ion secondary battery and method of fabricating thereof To obtain a lithium ion secondary battery having excellent charge and discharge characteristics in which electric connection between active material layers and a separator can be maintained without requiring a strong armor metal case, so that it can be ma... | 11/09/1999 |
| 5795665 | Fuel cell sub-assembly with a plurality of dimples A fuel cell sub-assembly having a cathode current collector, a cathode electrode, an electrolyte matrix, an anode electrode and an anode current collector arranged in a sandwich construction and provided with a plurality of rows of dimples. Adjacent rows ... | 08/18/1998 |
| 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 |
| 5716734 | Pocket type separator for electrode plate of storage battery A pocket type separator for an electrode of storage battery, such separator having a bottom, closed left and right side edges and an open top side. The inner surfaces of front and rear sides of the pocket facing each other include a plurality of parallel,... | 02/10/1998 |
| 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 |
| 5624770 | Battery with side wall ribs A lead storage battery with a monobloc container receives plate groups in cell compartments which are adjustable in width using a series of side wall ribs. Each rib includes a cell connector formed on the container wall, which is in turn provided with sup... | 04/29/1997 |
| 5616434 | Battery plate separator envelope and method of forming battery plate assemblies including the same Battery plate envelopes include a sheet of porous film material having a folded widthwise bottom edge and overlapped lateral edges to thereby form a pocket for receiving a battery plate therein. The overlapped lateral edges are joined to one another by a ... | 04/01/1997 |
| 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 |
| 5558952 | Pocket separator for electric storage battery plates A pocket separator which contains positive or negative plates in an electric storage battery, which has a closed bottom, left and right sides, and an open top. The pocket is formed of a porous separator sheet, with the facing inner surfaces of the pocket ... | 09/24/1996 |
| 5478362 | Method for producing a spiral electrodes A method of producing a spiral electrode group comprising a step for preparing a beltlike positive electrode plate whose thickness and width PT are PW respectively, a beltlike negative electrode plate whose thickness and width are NT and NW respectively, ... | 12/26/1995 |
| 5443600 | Grooved separator electrode composite A battery cell includes at a plurality of composite separator/electrode structures, each composite structure including a support member having a plurality of parallel, closely spaced ribs defining a plurality of grooves which extend longitudinally of the ... | 08/22/1995 |
| 5384212 | Flex-rib plaques for batteries A flexible rib plaque is provided for insertion between battery cell elements and the end and/or an interior wall of the battery container. The plaque improves performance by limiting the harmful effects caused by flexing of the container walls due to hyd... | 01/24/1995 |
| 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 |
| 5180647 | Battery separator and method of making same A battery separator comprises a fibrous mat which is filled with a mixture of very fine mineral powder and a binder resin. The mat may be either woven or nonwoven and the filler material generally comprises silicon materials. The binder in selected from a... | 01/19/1993 |
