Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11230457 | Elevator apparatus | Naohiro Shiraishi, Seiji Watanabe, Kotaro Fukui, Shiro Ikeda | 2022-01-25 |
| 11142429 | Emergency stop device for an elevator car | Naohiro Shiraishi, Seiji Watanabe, Kotaro Fukui | 2021-10-12 |
| 10526170 | Elevator apparatus | Naohiro Shiraishi, Seiji Watanabe, Kotaro Fukui | 2020-01-07 |
| 9708158 | Multi-car elevator using an exclusion zone and preventing inter-car collision | Masayuki Kakio, Takuo Kugiya, Kiyoshi Funai | 2017-07-18 |
| 9018332 | Polyorganosiloxane containing methacryloxy group or acryloxy group and method for producing the same | Tadashi Okawa | 2015-04-28 |
| 8336677 | Safety device for elevator and rope slip detection method | Hiroshi Kigawa, Naoyuki Maruyama | 2012-12-25 |
| 8297413 | Safety device for elevator and rope slip detection method using drive sheave acceleration | Hiroshi Kigawa, Naoyuki Maruyama | 2012-10-30 |
| 8261886 | Safety device for elevator and rope slip detection method | Hiroshi Kigawa, Naoyuki Maruyama | 2012-09-11 |
| 8186484 | Elevator system which controls a value of overspeed | Takaharu Ueda | 2012-05-29 |
| 8177035 | Elevator system which controls a value of overspeed | Takaharu Ueda | 2012-05-15 |
| 8177034 | Elevator system which controls a value of overspeed | Takaharu Ueda | 2012-05-15 |
| 7637357 | Elevator apparatus with sheave rotational speed difference determination for detecting an abnormality | Hiroyuki Nakagawa, Koei Matsukawa, Yoshikatsu Hayashi, Atsushi Mitsui | 2009-12-29 |
| 6435316 | Rope support device for elevator | — | 2002-08-20 |
| 5360699 | Photochromic material and an optical storage medium using the same | Junichi Hibino | 1994-11-01 |
| 5252437 | Photochromic materials having a thin photochromic film and a method for fabricating the same | Masaaki Suzuki, Kumiko Moriyama | 1993-10-12 |
| 5241075 | Photochromic spiropyran compounds | Junichi Hibino | 1993-08-31 |
| 5155230 | Photochromic dinitrated spiropyrans | Junichi Hibino | 1992-10-13 |
| 5110648 | Optical storage medium | Masa-aki Suzuki | 1992-05-05 |
| 5095120 | Process for the preparation of photochromic spiropyran compounds | Junichi Hibino | 1992-03-10 |
| 5079061 | Optical storage media | Takashi Hashida, Yoshiki Goto | 1992-01-07 |
| 5039555 | Method of preparing lubricant for recording media | Yoshiki Goto, Yosio Okahata | 1991-08-13 |
| 4937120 | Optical recording medium and process for producing the same | Junichi Hibino | 1990-06-26 |
| 4913948 | Optical recording medium | Junichi Hibino | 1990-04-03 |
| 4845021 | Method for recording optical information in optical high density recording mediums | Jinsei Miyazaki, Kimiaki Yoshino, Kazuhisa Morimoto | 1989-07-04 |
| 4845240 | Optical recording medium and process for producing the same | Junichi Hibino | 1989-07-04 |