Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5378427 | Corrosion-resistant alloy heat transfer tubes for heat-recovery boilers | Nobuo Otsuka | 1995-01-03 |
| 5284530 | Duplex stainless steel having improved corrosion resistance | Shigeki Azuma, Tadashi Fukuda | 1994-02-08 |
| 5066560 | Process for producing toner for electrophotography | Ryoji Tan, Shigeyoshi Tanaka, Ken-ichi Kishi, Yasuyuki Iguchi, Takashi Amano +1 more | 1991-11-19 |
| 4983488 | Process for producing toner for electrophotography | Ryoji Tan, Shigeyoshi Tanaka, Ken-ichi Kishi, Yasuyuki Iguchi, Takashi Amano +1 more | 1991-01-08 |
| 4910114 | Toner for electrophotography | Yukihisa Hosino | 1990-03-20 |
| 4770703 | Sintered stainless steel and production process therefor | Yoshio Tarutani, Akira Seki, Masaru Nishiguchi | 1988-09-13 |
| 4652315 | Precipitation-hardening nickel-base alloy and method of producing same | Masaaki Igarashi, Yasutaka Okada, Kunihiko Yoshikawa | 1987-03-24 |
| 4581202 | Sintered stainless steel and production process therefor | Yoshio Tarutani | 1986-04-08 |
| 4421571 | Process for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Yasutaka Okada, Taishi Moroishi, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-12-20 |
| 4400209 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Yasutaka Okada, Taishi Moroishi, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4400210 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Yasutaka Okada, Taishi Moroishi, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4400211 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Yasutaka Okada, Taishi Moroishi, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4400349 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Yasutaka Okada, Taishi Moroishi, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4351910 | Expandable styrene series resin composition and process for production thereof | Hatuo Sugitani, Yoshiyuki Mukoyama, Hiromasa Kawai | 1982-09-28 |