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| Number | Title | Issue Date |
| 7253680 | Amplifier system with current-mode servo feedback A system and method for compensating an amplifier apparatus for low frequency and/or DC components of an externally applied input signal as well as for any voltage offsets contributed by the amplifier circuitry. Band-limited servo feedback is applied to predetermine... | 08/07/2007 |
| 6781344 | Battery tester and sorting apparatus A battery testing and sorting apparatus that includes an upwardly inclined conveyor having a conveyor drive for moving batteries to be tested and sorted. The conveyor includes a battery feeding section disposed along the conveyor for positioning the batteries latera... | 08/24/2004 |
| 6677547 | Method and apparatus for classifying and recovering the main components of used batteries A method and an apparatus for classifying and recovering the main components of used batteries, particularly, a method and an apparatus by which the batteries are conveyed on a conveyor while an alternating magnetic field of a plurality of frequencies is ... | 01/13/2004 |
| 6337450 | Method and apparatus for classifying and recovering the main components of used batteries A method and an apparatus for classifying and recovering the main components of used batteries, particularly, a method and an apparatus by which the batteries are conveyed on a conveyor while an alternating magnetic field of a plurality of frequencies is ... | 01/08/2002 |
| 4842147 | Method and apparatus for conductive film detection The apparatus is used for detecting the proper conductivity of a conductive film enclosed within a nonconductive substrate or envelope such as a fluorescent lamp without requiring physical contact with the fluorescent lamp. The conductive film detector co... | 06/27/1989 |
| 4779739 | Method and apparatus for conductive film detection The apparatus is used for detecting the proper conductivity of a conductive film enclosed within a nonconductive substrate or envelope such as a fluorescent lamp without requiring physical contact with the fluorescent lamp. The conductive film detector co... | 10/25/1988 |
| 4759630 | Lamp quality judgement apparatus and judgement method therefor The invention is a lamp quality judgement apparatus and judgement method which judge quality by detecting the state of gas sealed in an electric lamp such as a gas-filled incandescent lamp, etc. in which gas with an Argon-Nitrogen mixture as its main comp... | 07/26/1988 |
| 4376485 | Method for rapidly testing quality of incompletely charged electrochemical cells A method for rapidly testing rechargeable electrochemical cells following assembly which enables the testing of cells to be carried out in a substantially uncharged condition. Cells in the assembly line are energized with a constant current pulse applied ... | 03/15/1983 |
| 4363407 | Method and system for testing and sorting batteries A method and system for testing and sorting a production run of sheet-like batteries includes: testing each battery to obtain a first value of electrical energy; placing machine readable indicia on each battery corresponding to the first value; retesting ... | 12/14/1982 |
| 4179032 | Methods of and apparatus for conveying, orienting, testing and sorting articles An article, such as a light-emitting diode, for replacing a slide base switchboard lamp has polar characteristics. The article has a light emitting cap located at one end and a cylindrical slide base with two contacts located diametrically across the base... | 12/18/1979 |
