Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7071285 | Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatus | Shinichi Kawamura, Masaomi Sasaki, Kazukiyo Nagai, Kohkoku Ri, Susumu Suzuka | 2006-07-04 |
| 6919419 | AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTRO-PHOTOGRAPHIC PHOTOCONDUCTOR, ELECTRO-PHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE | Kohkoku Ri, Masaomi Sasaki, Kazukiyo Nagai, Shinichi Kawamura, Susumu Suzuka | 2005-07-19 |
| 6790571 | Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatus | Shinichi Kawamura, Masaomi Sasaki, Kazukiyo Nagai, Kohkoku Ri, Susumu Suzuka | 2004-09-14 |
| 6664361 | Diphenol compound, aromatic polycarbonate and electrophotoconductive photoconductor | Masaomi Sasaki, Shinichi Kawamura, Kazukiyo Nagai, Kohkoku Ri, Susumu Suzuka | 2003-12-16 |
| 6576386 | AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE | Kohkoku Ri, Masaomi Sasaki, Kazukiyo Nagai, Shinichi Kawamura, Susumu Suzuka | 2003-06-10 |
| 6486293 | Electrophotographic photoconductor and method of producing aromatic polycarbonate resin for use in the photoconductor | Kohkoku Ri, Masaomi Sasaki, Kazukiyo Nagai, Shinichi Kawamura, Susumu Suzuka | 2002-11-26 |
| 6316577 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Tomoyuki Shimada, Masaomi Sasaki, Masafumi Ohta, Akihiro Imai, Mitsutoshi Anzai +2 more | 2001-11-13 |
| 6303736 | Electrophotographic photoconductor and aromatic polycarbonate resin for use in the photoconductor | Shinichi Kawamura, Masaomi Sasaki, Kazukiyo Nagai, Chiaki Tanaka, Kohkoku Ri +1 more | 2001-10-16 |
| 6194535 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Akira Katayama, Masaomi Sasaki, Katsukiyo Nagai, Chiaki Tanaka, Shinichi Kawamura +2 more | 2001-02-27 |
| 6191249 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chiaki Tanaka, Nozomu Tamoto, Masaomi Sasaki, Kazukiyo Nagai, Tomoyuki Shimada +3 more | 2001-02-20 |
| 6187494 | Electrophotographic photoconductor and aromatic polycarbonate resin for use in the photoconductor | Shinichi Kawamura, Masaomi Sasaki, Kazukiyo Nagai, Chiaki Tanaka, Kohkoku Ri +1 more | 2001-02-13 |
| 6187492 | Electrophotographic photoconductor and method of producing aromatic polycarbonate resin for use in the photoconductor | Kohkoku Ri, Masaomi Sasaki, Kazukiyo Nagai, Shinichi Kawamura, Susumu Suzuka | 2001-02-13 |
| 6172176 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chiaki Tanaka, Masaomi Sasaki, Katsukiyo Nagai, Shinichi Kawamura, Susumu Suzuka | 2001-01-09 |
| 6130310 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Akira Katayama, Masaomi Sasaki, Katsukiyo Nagai, Chiaki Tanaka, Shinichi Kawamura +1 more | 2000-10-10 |
| 6069224 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chihaya Adachi, Masaomi Sasaki, Kazukiyo Nagai, Tomoyuki Shimada, Chiaki Tanaka +4 more | 2000-05-30 |
| 6066428 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Akira Katayama, Masaomi Sasaki, Katsukiyo Nagai, Chiaki Tanaka, Shinichi Kawamura +2 more | 2000-05-23 |
| 6045959 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Akira Katayama, Masaomi Sasaki, Katsukiyo Nagai, Chiaki Tanaka, Shinichi Kawamura +1 more | 2000-04-04 |
| 6027846 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Tomoyuki Shimada, Masaomi Sasaki, Masafumi Ohta, Akihiro Imai, Mitsutoshi Anzai +2 more | 2000-02-22 |
| 5976746 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chiaki Tanaka, Masaomi Sasaki, Katsukiyo Nagai, Shinichi Kawamura, Susumu Suzuka | 1999-11-02 |
| 5942363 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chiaki Tanaka, Nozomu Tamoto, Masaomi Sasaki, Kazukiyo Nagai, Tomoyuki Shimada +3 more | 1999-08-24 |
| 5910561 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chihaya Adachi, Masaomi Sasaki, Kazukiyo Nagai, Tomoyuki Shimada, Chiaki Tanaka +4 more | 1999-06-08 |
| 5846680 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chihaya Adachi, Masaomi Sasaki, Kazukiyo Nagai, Tomoyuki Shimada, Chiaki Tanaka +4 more | 1998-12-08 |
| 5789128 | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chihaya Adachi, Masaomi Sasaki, Kazukiyo Nagai, Tomoyuki Shimada, Chiaki Tanaka +4 more | 1998-08-04 |