Issued Patents 1994
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359117 | Processes for producing aromatic polycarbonate oligomer and aromatic polycarbonate | Yoshiyuki Totani, Motokazu Hirao, Tomonori Ito, Akihiro Yamaguchi, Ken-ichi Goto +4 more | 1994-10-25 |
| 5354513 | Polarizing film | Katsuji Nakamura, Junichi Fujio, Shin Hosonuma, Tsutomu Nishizawa | 1994-10-11 |
| 5348685 | Ferroelectric liquid crystal composition | Akihiro Mochizuki, Shigeo Kasahara, Tetsuya Makino, Masashi Watanabe, Kunikiyo Yoshio +4 more | 1994-09-20 |
| 5346878 | Recording material | Naomasa Koike, Akinori Okada | 1994-09-13 |
| 5324704 | Fluoran compounds, crystalline toluene adducts thereof, recording material comprising same and process for their preparation | Atsuo Otsuji, Kiyoharu Hasegawa, Masatoshi Takagi, Akihiro Yamaguchi | 1994-06-28 |
| 5306688 | Salicylic acid derivatives, the process for preparing the same and the heat-sensitive recording materials comprising thereof | Yoshimitsu Tanabe, Yuki Kobayashi, Atsuo Otsuji, Kiyoharu Hasegawa, Kazuyoshi Kikkawa +3 more | 1994-04-26 |
| 5302571 | Crystals of fluoran compound, crystalline solvates thereof, process for their preparation and recording material comprising said crystal or said solvate | Atsuo Otsuji, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi | 1994-04-12 |
| 5300661 | Process for preparation of a recording material comprising a novel crystal of a fluoran compound | Atsuo Otsuji, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi | 1994-04-05 |
| 5300473 | Recording material comprising crystal of fluoran compound | Atsuo Otsuji, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi | 1994-04-05 |
| 5286418 | Polarizing film | Katsuji Nakamura, Junichi Fujio, Shin Hosonuma, Tsutomu Nishizawa | 1994-02-15 |
| 5283222 | Recording material comprising novel crystalline fluoran and process for prepartion of the said crystalline fluoran | Atsuo Otsuji, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Akihiro Yamaguchi | 1994-02-01 |
| 5281570 | Thermochromic materials | Kiyoharu Hasegawa, Yoshimitsu Tanabe, Kazuyoshi Kikkawa, Akihiro Yamaguchi | 1994-01-25 |