Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D311212 | Paper clip | — | 1990-10-09 |
| D310888 | Lighter | — | 1990-09-25 |
| D310341 | Tape measure | — | 1990-09-04 |
| D309089 | Screwdriver | — | 1990-07-10 |
| D307758 | Magnifying glass | — | 1990-05-08 |
| 4901822 | Group supervisory apparatus for elevator | — | 1990-02-20 |
| D305609 | Retractable blade knife | — | 1990-01-23 |
| D305095 | Hand saw | — | 1989-12-19 |
| D305079 | Case for magnifying glass or the like | — | 1989-12-19 |
| D305128 | Telescope | — | 1989-12-19 |
| D304418 | Scissors | — | 1989-11-07 |
| 4839631 | Monitor control apparatus | — | 1989-06-13 |
| D300504 | Hammer | — | 1989-04-04 |
| 4802557 | Wait time prediction apparatus for elevator | Yasukazu Umeda | 1989-02-07 |
| 4753346 | Automobile-shaped case for desk accessories | — | 1988-06-28 |
| 4749062 | Display control apparatus for elevator | Yasuhiro Nagata | 1988-06-07 |
| 4727499 | Service estimation apparatus for elevator | — | 1988-02-23 |
| 4724933 | Display apparatus for elevator | Yasukazu Umeda | 1988-02-16 |
| 4719996 | Group supervision apparatus for elevator | — | 1988-01-19 |
| 4685539 | Operating system for elevator | Yasukazu Umeda | 1987-08-11 |
| 4682673 | Elevator control apparatus | Yasukazu Umeda | 1987-07-28 |
| 4662479 | Operating apparatus for elevator | Yasukazu Umeda | 1987-05-05 |
| 4612624 | Demand estimation apparatus | — | 1986-09-16 |
| 4600087 | Apparatus for registering elevator call | — | 1986-07-15 |
| 4591985 | Apparatus for estimating traffic condition value of elevators | — | 1986-05-27 |