Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4954409 | Developer for electrophotography | Masayuki Takeda | 1990-09-04 |
| 4943505 | Developer and toner composition produced by emulsion polymerization | Yukihiro Ishii, Koichi Tanaka, Shigeru Sadamatsu | 1990-07-24 |
| 4933253 | Electrophotographic developer comprising toner particles and acrylic polymer fine particles | Yukihiro Ishii, Koichi Tanaka, Shigeru Sadamatsu | 1990-06-12 |
| 4929528 | Coated carrier for developer | Masayoshi Shinoki, Masahiro Takagi, Ikutaroh Nagatsuka, Koichi Kumashiro, Masayuki Takeda | 1990-05-29 |
| 4914528 | Detection of a synchronizing signal in a magnetic recording/reproducing apparatus | Masayuki Takeda, Yutaka Masumoto | 1990-04-03 |
| 4912004 | Carrier for developer | Ikutaroh Nagatsuka, Yasuo Matsumura, Masayuki Takeda, Emi Takahashi | 1990-03-27 |
| 4902597 | Carrier for electrophotographic developer | Masayuki Takeda, Masao Mochizuki, Koichi Kumashiro, Ikutaroh Nagatsuka, Masayoshi Shinoki | 1990-02-20 |
| 4871639 | Carrier for electrophotographic developer | Ikutaroh Nagatsuka, Masayuki Takeda, Toshio Honjo, Kazuhiro Itoh, Kenji Uchida | 1989-10-03 |
| 4868083 | Developer carrier and process for producing the same | Ikutaroh Nagatsuka, Yasuo Matsumura, Masayuki Takeda, Chiaki Suzuki | 1989-09-19 |
| 4861694 | Process for producing carriers for developer | Masayuki Takeda, Ikutaroh Nagatsuka, Toshio Honjo, Kazuhiro Itoh, Kenji Uchida | 1989-08-29 |
| 4859558 | Composition with fatty acid bisamide powder developer | Yasuo Matsumura, Masayuki Takeda, Chiaki Suzuki, Ikutaroh Nagatsuka | 1989-08-22 |
| 4830125 | Process and apparatus for automatically weighing and introducing chemicals | Michinobu Kaimori, Akira Aikawa, Akira Urakami, Gen Nishimura, Tohru Koide +3 more | 1989-05-16 |
| 4791041 | Magnetic carrier particles for electrophotographic developer | Masayuki Takeda, Chiaki Suzuki, Ikutaroh Nagatsuka | 1988-12-13 |
| 4367275 | Method of preventing offset of electrostatic images after fixing and developing using polyvalent metal salt polymer in toner | Akio Kinoshita | 1983-01-04 |