Katsuhiko Tomita
40Patents
12h-index
47Co-inventors
81Inventor score
Filing activity: Dec 16, 1981 → Dec 21, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6154764A | On-line forum-type electronic conference system maintaining consistency of messages | Physics | 492 | Expired |
| US6255678A | Apparatus for measuring physical and chemical phenomena | Physics | 169 | Expired |
| US6294133A | Multiple detecting apparatus for physical phenomenon and/or chemical phenomenon | Electricity | 73 | Expired |
| US4456919A | Thermopile type detector with temperature sensor for cold junction | Physics | 43 | Expired |
| US5721488A | Method and apparatus for testing integrated magnetic head assembly | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4792463A | Method of producing ferroelectric thin film | Chemistry; Metallurgy | 28 | Expired |
| US5854554A | Method and apparatus for testing a magnetic head during manufacture utilizing an internal magnetic field | Physics | 28 | Expired |
| US6018760A | Object move processing apparatus, object move processing method and medium recorded with object move processing program in store-and-forward type of electronic conference system | Physics | 20 | Expired |
| US5436457A | Infrared gas analyzer | Physics | 19 | Expired |
| US4980043A | Reference electrode | Physics | 16 | Expired |
| US4872956A | Methods of measuring ion-concentration and the like and a calibrating sheet as well as a calibrating method of measuring devices used therein | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4816132A | Sheet type electrode | Physics | 15 | Expired |
| US4850105A | Method of taking out lead of semiconductor tip part | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5256443A | Method of producing metallic thin film sensors | Electricity | 11 | Expired |
| US5814280A | Semiconductor PH sensor and circuit and method of making same | Physics | 11 | Expired |
| US6479988B2 | Method and apparatus for testing thin-film magnetic head | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4797188A | Sheet type electrode for use in measurement of ions | Physics | 8 | Expired |
| US5248403A | Gelatinized member for use in electrodes measuring ion concentration | Physics | 7 | Expired |
| US6229825A | Information consistency apparatus and method | Electricity | 7 | Expired |
| US5234568A | Apparatus for simultaneous measurement of a plurality of ionic concentrations | Physics | 6 | Expired |
| US6801377B2 | Performance test method of head gimbal assembly with precise positioning actuator | Physics | 6 | Expired |
| US4883563A | Method of manufacturing a thin glass membrane | Physics | 5 | Expired |
| US7280069B2 | Range-finding radar apparatus with high-resolution pulse-width calculation unit | Physics | 5 | Expired |
| US5545988A | Waveform signal processor with selective sampling | Physics | 5 | Expired |
| US6824660B2 | Molecular recognition type chemical CCD | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.