Issued Patents All Time
Showing 26–50 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5863683 | Electrophotographic photoconductor containing charge generating azo pigment subjected to a salt-milling process | Katsuichi Ohta, Masaomi Sasaki | 1999-01-26 |
| 5672756 | Triphenylamine compound for use in electrophotographic photoconductors | Tomoyuki Shimada, Masaomi Sasaki, Masafumi Ohta, Mitsutoshi Anzai, Akihiro Imai | 1997-09-30 |
| 5672728 | Method for preparing the pyrenylamine derivatives | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1997-09-30 |
| 5631404 | Diamine compounds for use in electrophotographic photoconductors | Mitsutoshi Anzai, Yasuo Murakami, Atsushi Takesue, Masaomi Sasaki, Tomoyuki Shimada +1 more | 1997-05-20 |
| 5616805 | Methods for preparing pyrenylamine derivatives and intermediates | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1997-04-01 |
| 5616801 | Charge transporting materials and electrophotographic photoconductors using the same | Tomoyuki Shimada, Masaomi Sasaki, Mitsuru Hashimoto | 1997-04-01 |
| 5604065 | Electrophotographic photoconductor and triphenylamine compound for use therein | Tomoyuki Shimada, Masaomi Sasaki, Masafumi Ohta, Mitsutoshi Anzai, Akihiro Imai | 1997-02-18 |
| 5599995 | Electrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediate | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1997-02-04 |
| 5587516 | Electrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediate | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1996-12-24 |
| 5576132 | Electrophotographic photoconductor comprising pyrenylamine derivative | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1996-11-19 |
| 5569800 | Electrophotographic photoconductor, pyrene-ring-containing olefin compound for use in the same, intermediate for synthesizing the olefin compound, and method of synthesizing the olefin compound | Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1996-10-29 |
| 5550293 | Electrophotographic photoconductors and tertiary amine compounds having condensed polycyclic group for use in the same | Tomoyuki Shimada, Masaomi Sasaki | 1996-08-27 |
| 5489495 | Electrophotographic photoconductor and diamine compounds for use in the same | Mitsutoshi Anzai, Yasuo Murakami, Atsushi Takesue, Masaomi Sasaki, Tomoyuki Shimada +1 more | 1996-02-06 |
| 5488164 | Electrophotographic photoconductors and tertiary amine compounds having condensed polycyclic group for use in the same | Tomoyuki Shimada, Masaomi Sasaki | 1996-01-30 |
| 5474868 | Electrophotographic photoconductor with lignin | Hiroshi Adachi, Masaomi Sasaki | 1995-12-12 |
| 5475137 | M-phenylenediamine derivatives | Tomoyuki Shimada, Masaomi Sasaki, Hiroshi Adachi | 1995-12-12 |
| 5462826 | Charge transporting materials and electrophotographic photoconductors using the same | Tomoyuki Shimada, Masaomi Sasaki, Mitsuru Hashimoto | 1995-10-31 |
| 5459275 | Pyrenylamine derivatives | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimida, Hiroshi Adachi | 1995-10-17 |
| 5457232 | Pyrenylamine derivatives having unsaturated bond | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1995-10-10 |
| 5436100 | Electrophotographic photoconductor and M-phenylenediamine derivatives for use in the same | Tomoyuki Shimada, Masaomi Sasaki, Hiroshi Adachi | 1995-07-25 |
| 5403950 | Dipyrenylamine derivatives useful in electrophotographic photoconductors | Tomoyuki Shimada, Masaomi Sasaki, Hiroshi Adachi | 1995-04-04 |
| 5382692 | Electrophotographic photoconductors and tertiary amine compounds having condensed polycyclic group for use in the same | Tomoyuki Shimada, Masaomi Sasaki | 1995-01-17 |
| 5356742 | Dipyrenylamine derivatives and electrophotographic photoconductor comprising the same | Tomoyuki Shimada, Masaomi Sasaki, Hiroshi Adachi | 1994-10-18 |
| 5344985 | Aldehyde intermediates for the preparation of pyrenylamine derivatives having unsaturated bond | Chiaki Tanaka, Masaomi Sasaki, Tomoyuki Shimada, Hiroshi Adachi | 1994-09-06 |
| 5334470 | Electrophotographic element with M-phenylenediamine derivatives therein | Tomoyuki Shimada, Masaomi Sasaki, Hiroshi Adachi | 1994-08-02 |