Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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 |
| 7781099 | Non-aqueous electrolyte secondary cell The present invention provides a non-aqueous electrolyte secondary battery having high energy density and satisfactory cycle performance by using an alloy comprising Ni and Sn as a negative active material. The non-aqueous electrolyte secondary battery comprises a n... | 08/24/2010 |
| 7776214 | Membrane element A membrane element in which, after membrane breakage or deterioration, the filtration plate made of a thermoplastic resin can be reused to replace the membrane with a fresh one. The membrane element comprises a filtration plate made of a thermoplastic resin and, bon... | 08/17/2010 |
| 7740963 | Liquid fuel type fuel cell system and its operating method A direct methanol type fuel cell system provided with a tank for storing an antifreeze that is injected into at least said unit cell or a cell stack and held in place at the time of stand-by operation of the direct methanol type fuel cell system. At the time of star... | 06/22/2010 |
| 7718312 | Battery The metal foil of the positive electrode 1a or the negative electrode 1b in the power generating element 1 is connected along the connecting plate portion 2b which is folded, twisted, and provided in a protruding cond... | 05/18/2010 |
| 7674537 | Direct methanol type fuel cell and method of preventing elution of its fuel pole, quality control method and operation method Elution of a fuel electrode material into a fuel in a direct methanol fuel cell is monitored. The elution arises resulting from elution of a perfluorosulfonic acid polymer in the fuel electrode into the fuel in a high-concentration fuel equal to or more than 2 M or ... | 03/09/2010 |
| 7635543 | Lead-acid battery and manufacturing method thereof A lead-acid battery which comprises a positive electrode, a negative electrode, a separator and an electrolyte, wherein the electrolyte contains volatile organic acid and the content of volatile organic acid is 250 mg or lower per liter of the electrolyte. The prese... | 12/22/2009 |
| 7527896 | Nonaqueous electrolyte secondary battery A nonaqueous electrolyte secondary battery which comprises a positive electrode including particles of lithium-containing layered nickel oxide represented by a general formula LiaNixCoyAlzMbO2, wherei... | 05/05/2009 |
| 7510798 | Storage battery device and power source apparatus comprising it An assembled battery device comprising a plurality of single cells which are placed with a predetermined space between each of them and an element for detecting swelling is set in the predetermined space between the single cells and operates in accordance with the t... | 03/31/2009 |
| 7358702 | Storage battery with auxiliary terminals There is provided a storage battery for supplying power to an engine starting circuit and plural electrical parts and accessories, which is structured to prevent all the cords for various circuits and the like from being jammed to a single pair of terminals of the s... | 04/15/2008 |
| 7348099 | Nonaqueous secondary electrolytic battery A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating... | 03/25/2008 |
| 7309541 | Fuel cell A fuel cell includes plural gas flow channels, a switching device, and a variable gas flow channel with the function of switching the connection between one gas flow channel and another gas flow channel from series to parallel or from parallel to series. ... | 12/18/2007 |
| D553565 | Storage battery | 10/23/2007 |
| 7267904 | Nonaqueous secondary electrolytic battery A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating... | 09/11/2007 |
| 7223499 | Lead battery A grid is obtained by punching or expanding a sheet comprising a pure lead (Pb: 99.99 mass % or more) plate having a lead-tin alloy layer formed at least on one side of the pure lead plate. By using it as a positive electrode of a lead-acid battery, the problem that... | 05/29/2007 |
| D536301 | Storage battery | 02/06/2007 |
| 7147957 | Electrode for fuel cell and manufacturing method therefor In an electrode for a fuel cell, a catalyst layer contains a solid polymer electrolyte, catalyst particles and porous polymer. The porous polymer is provided for the inside portions of pores of said catalyst layer and/or the surface of said catalyst layer. ... | 12/12/2006 |
| 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 |
| 7115340 | Non-aqueous electrolyte secondary battery A non-aqueous electrolyte secondary battery according to the present invention is characterized by including a non-aqueous electrolyte which contains at least one of vinylene carbonate derivatives at a concentration of 1 wt % or less and at least one of cyclic sulfa... | 10/03/2006 |
| 7097944 | Nonaqueous secondary cell A nonaqueous secondary cell including the following elements: a positive electrode capable of absorbing and releasing lithium; a negative electrode capable of absorbing and releasing lithium; and a nonaqueous electrolyte including a nonaqueoous solvent and a lithium... | 08/29/2006 |
| 7029793 | Nonaqueous electrolyte lithium secondary cell A nonaqueous electrolyte lithium secondary cell comprising a positive electrode (1), a negative electrode (2) and a nonaqueous electrolyte containing a lithium salt is characterized by that the nonaqueous electrolyte contains a room temperature molten ... | 04/18/2006 |
| 7022433 | Negative active material, method of manufacturing its material, and lead acid battery A negative active material is characterized by being prepared by adding a lignin having a unit structure represented by the formula (I) as the main structure to a lead oxide. Since the lignin of the formula (I) is added, the negative active material can be prevented... | 04/04/2006 |