Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6182001 | Braking estimation device, anti-lock brake controller, and braking pressure controller | Masaru Sugai, Takaji Umeno, Eiichi Ono, Hiroyuki Yamaguchi | 2001-01-30 |
| 6142026 | Wheel information estimating apparatus | Hideki Ohashi, Hiroyuki Kawai, Hiroyoshi Kojima, Takaji Umeno, Toshiharu Naito +1 more | 2000-11-07 |
| 6122585 | Anti-lock braking system based on an estimated gradient of friction torque, method of determining a starting point for anti-lock brake control, and wheel-behavior-quantity servo control means equipped with limit determination means | Eiichi Ono, Takaji Umeno, Hiroyuki Yamaguchi, Masaru Sugai | 2000-09-19 |
| 5948961 | Apparatus and method for detecting friction characteristics | Masaru Sugai | 1999-09-07 |
| 5826207 | Device for estimating air pressure of tire from vibration components of vehicle wheel speed | Hideki Ohashi, Hiroyuki Kawai, Hiroyoshi Kojima, Takaji Umeno, Toshiharu Naito +2 more | 1998-10-20 |
| 5629669 | Running control apparatus for vehicles and alarm apparatus for vehicles | Yoshikazu Hattori, Masashi Mizukoshi, Takashi Shigematsu | 1997-05-13 |
| 5588721 | Vibration analysis of the rotating wheel for controlling anti-lock braking operation | Masaru Sugai, Hiroyuki Yamaguchi, Takaji Umeno | 1996-12-31 |
| 5531110 | Method and apparatus for estimating disturbance acting on vehicle tired wheel based on wheel angular velocity and equation of state | Hideki Ohashi, Hiroyuki Kawai, Hiroyoshi Kojima, Nobuo Hiraiwa, Takaji Umeno +1 more | 1996-07-02 |
| 5412584 | Dynamic system diagnosing apparatus, tire air pressure diagnosing apparatus and vehicle body weight change detecting apparatus using same | Takaji Umeno, Norio Iwama | 1995-05-02 |
| 5038092 | Current control system for inverter | Yuzuru Tsunehiro | 1991-08-06 |
| 4739465 | Low loss and anti-shoot-through pulse width modulated inverter controller | Yukio Inagawa | 1988-04-19 |
| 4722042 | Method of controlling current of inverter for optimum setting of switching modes | Norio Iwama | 1988-01-26 |
| 4641075 | Method of and apparatus for controlling current of inverter | Yukio Inaguma, Norio Iwama | 1987-02-03 |
| 4477763 | Method of controlling inverter and system therefor | Yuzuru Tsunehiro | 1984-10-16 |
| 4467407 | Multi-level inverter | Norio Iwama | 1984-08-21 |