Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6303540 | Thermally sensitive recording medium | Tadakazu Fukuchi, Kaoru Hamada, Yuji Tsuzuki, Yoshihide Kimura, Yutaka Wakita | 2001-10-16 |
| 6284706 | Thermally sensitive recording medium | Yoshimi Midorikawa, Kaoru Hamada, Yoshihide Kimura | 2001-09-04 |
| 6284707 | Thermally sensitive recording medium | Yoshimi Midorikawa, Kaoru Hamada, Yoshihide Kimura | 2001-09-04 |
| 6258747 | Thermally sensitive recording medium | Yoshimi Midorikawa, Kaoru Hamada, Yoshihide Kimura | 2001-07-10 |
| 6093678 | Spontaneously color changing type thermal sensitive recording medium | Kaoru Hamada, Tadakazu Fukuchi, Reiko Sato, Yutaka Wakita | 2000-07-25 |
| 5919928 | Phenanthridine derivatives and metal complexes thereof used for transparent recording medium or optical recording medium | Reiji Ohashi, Yukiko Ryu, Hidetoshi Yoshioka | 1999-07-06 |
| 5892042 | Acridine derivative metal complexes used for transparent recording medium or optical recording medium | Reiji Ohashi, Yukiko Ryu, Hidetoshi Yoshioka | 1999-04-06 |
| 5811369 | Thermal recording medium | Kaoru Hamada, Akio Sekine | 1998-09-22 |
| 5811368 | Thermal sensitive recording medium | Tadakazu Fukuchi, Kaoru Hamada, Nobuhiro Kudoh, Akio Sekine | 1998-09-22 |
| 5792863 | Acridine derivatives and metal complexes thereof used for transparent recording medium or optical recording medium | Reiji Ohashi, Yukiko Ryu, Hidetoshi Yoshioka | 1998-08-11 |
| 5753586 | Thermal sensitive recording sheet | Kaoru Hamada, Yoshimi Midorikawa, Yutaka Wakita, Akio Sekine, Hiroshi Ueda | 1998-05-19 |
| 5733843 | Thermal sensitive recording sheet | Toshiaki Minami, Kaoru Hamada, Akio Sekine | 1998-03-31 |
| 5710094 | Reversible multi-color thermal recording medium | Toshiaki Minami, Kaoru Hamada, Akio Sekine | 1998-01-20 |
| 5707778 | Optical recording medium | Toshiaki Minami, Kaoru Hamada, Akio Sekine, Toshimi Satake, Toshiyuki Takano +1 more | 1998-01-13 |
| 5665675 | Aminobenzenesulfonamide derivative and recording medium using the same | Kaoru Hamada, Akio Sekine | 1997-09-09 |
| 5661100 | Urea (thiourea) derivative and thermal recording sheet using the same | Toshiaki Minami, Kaoru Hamada, Akio Sekine, Ryoichi Kinishi, Ryuzo Minakami | 1997-08-26 |
| 5612279 | Optical recording sheet | Toshimi Satake, Toshiyuki Takano, Hideki Hayasaka, Yukiko Uehori | 1997-03-18 |
| 5494882 | Thermal recording material | Toshimi Satake, Hideki Hayasaka, Toshiyuki Takano, Akio Sekine | 1996-02-27 |
| 5482913 | Recording sheet | Toshimi Satake, Toshiyuki Takano, Akio Sekine | 1996-01-09 |
| 5470816 | Thermal recording sheet | Toshimi Satake, Toshiyuki Takano, Hideki Hayasaka, Yukiko Uehori | 1995-11-28 |
| 5434119 | Transparent recording medium | Toshimi Satake, Toshiyuki Takano, Akio Sekine | 1995-07-18 |
| 5393443 | Hard-coating, heat-absorbing composition and heat-shielding substance | Toshimi Satake, Miyuki Yokoyama | 1995-02-28 |
| 5391666 | Light-responsive plate containing the metal salt of a phthalic acid derivative | Toshimi Satake, Hiroshi Fukui, Miyuki Yokoyama, Akio Sekine | 1995-02-21 |
| 5369199 | Light-responsive plate containing metal salt of a phthalic acid derivative | Toshimi Satake, Hiroshi Fukui, Miyuki Yokoyama, Akio Sekine | 1994-11-29 |
| 5354514 | Near infrared absorbing composition and material and product containing same | Toshimi Satake | 1994-10-11 |