Norio Matsuda
44Patents
11h-index
53Co-inventors
78Inventor score
Filing activity: May 8, 1981 → Mar 30, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5672554A | Alumina composition, alumina molded article, alumina ceramics, and process for producing ceramics | Chemistry; Metallurgy | 95 | Expired |
| US6225987A | Drawing apparatus | Physics | 92 | Expired |
| US5258968A | Tracking error signal generating device for preventing offset of the generated tracking error signal | Physics | 43 | Expired |
| US5424584A | Control system for a plurality of vehicle safety devices | Performing Operations; Transporting | 35 | Expired |
| US6246646A | Focus control apparatus for multilayer optical recording medium | Physics | 27 | Expired |
| US4590127A | Abrasive used in magnetic recording medium and production thereof | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5049367A | Aluminum nitride powder and process for preparation of the same | Chemistry; Metallurgy | 17 | Expired |
| US6151280A | Focus jump control apparatus of a player for multilayer recording disc | Physics | 16 | Expired |
| US5973060A | Silicone rubber particulate composition and methods for the preparation thereof | Chemistry; Metallurgy | 16 | Expired |
| US7293353B2 | Method of fabricating rigid flexible printed circuit board | Emerging Cross-Sectional Technologies | 15 | Active |
| US6211267A | Method for the continuous production of organopolysiloxane gum solution | Chemistry; Metallurgy | 12 | Expired |
| US6524549B1 | Method for producing &agr;-alumina powder | Chemistry; Metallurgy | 11 | Expired |
| US4488012A | MFB Loudspeaker | Electricity | 11 | Expired |
| US6006728A | Fuel injection system of engine for models | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4590053A | Method for producing .alpha.-form silicon nitride fine powders | Chemistry; Metallurgy | 9 | Expired |
| US5832882A | Fuel pressure control valve for engines of models | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5896845A | Engine for models and method for controlling engine for models | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6256273A | Focusing control apparatus for optimally directing light onto a recording surface | Physics | 9 | Expired |
| US4532620A | Coil assembly having stacked spiral pattern layers and method of making | Electricity | 8 | Expired |
| US6091680A | Focus control apparatus | Physics | 7 | Expired |
| US5408203A | Switching boosting circuit having internally controlled duty | Electricity | 7 | Expired |
| US6690632B1 | Tilt servo apparatus and control method thereof | Physics | 6 | Expired |
| US6079392A | Fuel injection device for model engine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6106800A | Method for producing alpha-alumina powder | Chemistry; Metallurgy | 6 | Expired |
| US6587409B1 | Tilt servo apparatus for optical disc recording/playing apparatus | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.