Kiyoshi Kobayashi
123Patents
19h-index
180Co-inventors
89Inventor score
Filing activity: Jun 5, 1981 → Sep 7, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4695065A | Keyless chuck for rotary tool | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6341400B1 | Toothbrush | Human Necessities | 48 | Expired |
| US5853801A | Process for the preparation of continuous optical compensatory sheet | Physics | 40 | Expired |
| US5102623A | Infinitesimal liquid reactor | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5712964A | Computer graphics data display device and method based on a high-speed generation of a changed image | Physics | 35 | Expired |
| US6587106B1 | Computer graphics apparatus having an improved walk-through function | Physics | 34 | Expired |
| US7566839B2 | Contact-breaker device, circuit and apparatus comprising the same, and method for assembling contact-breaker device | Electricity | 28 | Active |
| US7392577B2 | Method for manufacturing a perpendicular magnetic head | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6903900B2 | Perpendicular magnetic recording head including nonmagnetic layer overlaying main pole layer | Physics | 27 | Expired |
| US6714529B1 | Variable transmission rate digital modem with multi-rate filter bank | Electricity | 26 | Expired |
| US6687084B2 | Perpendicular magnetic recording head having main magnetic pole layer formed on high-flatness surface of yoke layer, and method of manufacturing the head | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6658882B2 | Integral-type air conditioner | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6488124B1 | Elevator | Performing Operations; Transporting | 25 | Expired |
| US5393571A | Curtain coating method for eliminating sagging at high flow rates | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6697221B2 | Perpendicular magnetic recording head with inverted trapezoidal main magnetic pole layer | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6836957B2 | Method for making perpendicular magnetic recording head having inverted trapezoidal main magnetic pole layer | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6247557A | Traction type elevator apparatus | Performing Operations; Transporting | 21 | Expired |
| US4622592A | Composite facsimile apparatus | Electricity | 19 | Expired |
| US7343668B2 | Method of manufacturing perpendicular magnetic recording head capable of highly precisely defining gap distance | Emerging Cross-Sectional Technologies | 19 | Active |
| US4646380A | Rotary cleaning member in cleaner | Human Necessities | 19 | Expired |
| US7248437B2 | Perpendicular magnetic recording head and method for manufacturing the same | Physics | 18 | Expired |
| US4845797A | Floor cleaner | Human Necessities | 16 | Expired |
| US4811449A | Cleaner | Human Necessities | 16 | Expired |
| US5162894A | Semiconductor integrated circuit having a dummy lead and shaped inner leads | Electricity | 14 | Expired |
| US4922851A | Curtain coater with pivoted starting plate | Emerging Cross-Sectional Technologies | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.