Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7031934 | Electronic commerce system and method for providing commercial information in electronic commerce system | Masafumi Okojima, Akira Kumomura | 2006-04-18 |
| 6070148 | Electronic commerce system and method for providing commercial information in electronic commerce system | Masafumi Okojima, Akira Kumomura | 2000-05-30 |
| D282773 | Oil heater | Nobuyuki Mase | 1986-02-25 |
| D282568 | Oil heater | Nobuyuki Mase | 1986-02-11 |
| D276545 | Oil heater | Youichi Takahashi | 1984-11-27 |
| D276458 | Oil heater | Yuzo Fujii, Sayoko Kanda | 1984-11-20 |
| D276181 | Oil heater | Youichi Takahashi | 1984-10-30 |
| D276068 | Oil heater | Youichi Takahashi | 1984-10-23 |
| D276067 | Oil heater | Seiichi Sakakibara | 1984-10-23 |
| D276069 | Oil heater | Youichi Takahashi | 1984-10-23 |
| D255972 | Microwave oven | Yoichi Takahashi, Hanji Takahashi | 1980-07-22 |