Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11249147 | Magnetic sensor | Hideki Miyazaki, Shinsuke Kato | 2022-02-15 |
| 5933675 | Centralized control system for terminal device | Yoji Sawada, Toru Kirimura, Seiji Watanabe, Sumiaki Hirata | 1999-08-03 |
| 5890029 | Copying maching control system with improved reliability of communication function among copying machines and centralized control unit | Sumiaki Hirata | 1999-03-30 |
| 5845174 | Image forming apparatus equipped with cleaning device | Masato Yasui, Seiichi Munemori, Kuniaki Ishiguro | 1998-12-01 |
| 5765074 | Transfer device and image forming apparatus using said transfer device | Masato Yasui | 1998-06-09 |
| 5734951 | Image forming apparatus | Futoshi Hamada | 1998-03-31 |
| 5729819 | Image forming apparatus | Kuniaki Ishiguro | 1998-03-17 |
| 5708908 | Copying machine control system with improved reliability of communication function among copying machiines and centralized control unit | Sumiaki Hirata | 1998-01-13 |
| 5677775 | Image forming apparatus provided with a device for controlling communication with a central supervisory apparatus | Ikunori Yamaguchi, Sumiaki Hirata | 1997-10-14 |
| 5666621 | Sheet separation device, sheet separation method, image forming apparatus and image forming method | Masato Yasui | 1997-09-09 |
| 5631724 | Centralized control system for terminal device | Yoji Sawada, Toru Kirimura, Seiji Watanabe, Sumiaki Hirata | 1997-05-20 |
| 5543892 | Image forming apparatus connected to an information management apparatus through a communication line | Sumiaki Hirata, Ikunori Yamaguchi | 1996-08-06 |
| 5491535 | Control appartus of copying machine with improved communication function for centralized control | Sumiaki Hirata, Kenzo Nagata | 1996-02-13 |
| 5424808 | Control apparatus for copying machine with improved communication function for centralized control unit | Sumiaki Hirata | 1995-06-13 |
| 5404199 | Control apparatus of copying machine with improved communication function for centralized control unit | Sumiaki Hirata | 1995-04-04 |
| 5386271 | Centralized control system for an image forming apparatus which employs fuzzy logic to identify abnormal conditions | Sumiaki Hirata, Ikunori Yamaguchi | 1995-01-31 |
| 5384622 | System of controlling a plurality of copying machines interconnnected through a private branch exchange | Sumiaki Hirata | 1995-01-24 |
| 5300980 | Control apparatus of copying machine with improved communication function for centralized control unit | Sumiaki Hirata, Kenzo Nagata, Yoji Sawada, Toru Kirimura, Seiji Watanabe | 1994-04-05 |
| 5280325 | Image formation method and apparatus for forming a plurality of images in different positions on a recording sheet | Takanobu Yamada | 1994-01-18 |
| 5257069 | Copying machine control system controlling a plurality of copying machines through communication network | Sumiaki Hirata, Kenzo Nagata | 1993-10-26 |
| 5220380 | Control system for copying machines with improved communication function for centralized control unit | Sumiaki Hirata | 1993-06-15 |
| 5216461 | Control system for copying machine with improved communication function to centralized control unit | Sumiaki Hirata | 1993-06-01 |
| 5185633 | Image forming apparatus having single sensor for detecting mischucking of transfer paper and whether transfer paper is plain or transparent paper | Naotoshi Kawai | 1993-02-09 |