Issued Patents All Time
Showing 26–50 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9118068 | Layered solid-state battery | Takeshi Hayashi, Masutaka Ouchi, Kunio Nishida | 2015-08-25 |
| 8818234 | Image forming apparatus | Hideyuki Takemoto | 2014-08-26 |
| 8587847 | Image forming device | Yoshihide Ota, Wataru Hojo, Hideyuki Takemoto | 2013-11-19 |
| 8501350 | Lithium manganese composite oxide | Ryoji Kanno, Yoshihiro Kawakami | 2013-08-06 |
| 7945517 | Data distribution system and recording device for use therein | Yoshihiro Hori, Toshiaki Hioki, Miwa Kanamori, Masataka Takahashi, Takayuki Hasebe +3 more | 2011-05-17 |
| RE40547 | Software reproduction apparatus | Ryota Akiyama | 2008-10-21 |
| RE39802 | Storage medium for preventing an irregular use by a third party | Takayuki Hasebe, Ryota Akiyama | 2007-08-28 |
| 7016878 | Content sales period verifying system and content decryption key effective period verifying system | Haruhiko Tsunoda, Kazuharu Hasegawa, Hidefumi Aoe | 2006-03-21 |
| 6873975 | Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method | Takahisa Hatakeyama, Yuji Miyazawa | 2005-03-29 |
| 6636970 | Software encoding using a combination of two types of encoding and encoding type identification information | Ryota Akiyama | 2003-10-21 |
| 6460137 | Encryption processing system | Ryota Akiyama, Akio Munakata, Yuzuru Koga, Masayuki Ishizaki | 2002-10-01 |
| 6314434 | Structured data management system and computer-readable method for storing structured data management program | Nobuhisa Shigemi, Hiroyuki Yamamoto, Gengo Tazaki, Mitsuhiro Kokubun | 2001-11-06 |
| 6279006 | Structured data management system and computer-readable recording medium storing structured data management program | Nobuhisa Shigemi, Hiroyuki Yamamoto, Gengo Tazaki, Mitsuhiro Kokubun | 2001-08-21 |
| 6256459 | Developing apparatus and image forming apparatus using the same developing apparatus and method of determining end-of-toner condition | Shin Hasegawa, Tomoji Ishikawa, Takeroh Kurenuma | 2001-07-03 |
| 6247131 | Information management method and recording medium | Seigo Kotani, Keiichi Murakami, Hideyuki Hirano, Takehiko Hayashi, Shinichi Yoshimoto | 2001-06-12 |
| 5918215 | Content sales price accounting system and accounting method thereof | Haruhiko Tsunoda, Kazuharu Hasegawa, Hidefumi Aoe | 1999-06-29 |
| 5909688 | Information management system | Hiroaki Negishi, Gengo Tazaki, John W. Mackin, Mitsuhiro Kokubun | 1999-06-01 |
| 5884280 | System for and method of distributing proceeds from contents | Haruhiko Tsunoda, Kazuharu Hasegawa, Hidefumi Aoe | 1999-03-16 |
| 5857021 | Security system for protecting information stored in portable storage media | Satoshi Kataoka, Kenichi Utsumi, Keiichi Murakami | 1999-01-05 |
| 5818812 | Optical recording medium and reproducing method for the same | Mineo Moribe | 1998-10-06 |
| 5812663 | Data reproducing device | Ryota Akiyama | 1998-09-22 |
| 5812661 | Software reproduction apparatus | Ryota Akiyama | 1998-09-22 |
| 5809300 | Removable storage medium and computer system using the same | Kenichi Utsumi, Koichi Ogawa, Satoshi Itami, Kazunori Naito, Kazuo Nakashima | 1998-09-15 |
| 5805699 | Software copying system | Ryota Akiyama, Yoshiaki Uchida | 1998-09-08 |
| 5805800 | Apparatus and method for controlling storage medium using security capabilities | Seigo Kotani, Keiichi Murakami, Shinichi Yoshimoto, Kouichi Kanamoto, Tatsuro Masuda +1 more | 1998-09-08 |