Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5521138 | Reversible thermosensitive coloring composition, and recording medium using the same | Masaru Shimada, Hiroshi Goto, Eiichi Kawamura, Shoji Maruyama, Keishi Kubo | 1996-05-28 |
| 5432534 | Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium | Shoji Maruyama, Hiroshi Goto, Eiichi Kawamura, Masaru Shimada, Keishi Kubo +5 more | 1995-07-11 |
| 5395433 | Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium | Shoji Maruyama, Hiroshi Goto, Eiichi Kawamura, Masaru Shimada, Keishi Kubo +5 more | 1995-03-07 |
| 5296439 | Reversible thermosensitive coloring recording medium, recording method, and image display apparatus using the recording medium | Shoji Maruyama, Hiroshi Goto, Eiichi Kawamura, Masaru Shimada, Keishi Kubo +5 more | 1994-03-22 |
| 5185194 | Heat-mode recording medium | Ryohei Miyake | 1993-02-09 |
| 4716220 | Disazo compounds with xanthone nucleus for electrophotography | — | 1987-12-29 |
| 4596754 | Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate | Mitsuru Hashimoto, Masafumi Ohta, Masaomi Sasaki | 1986-06-24 |
| 4565759 | Plates for use in lithographic printing | — | 1986-01-21 |
| 4540643 | Tetrazonium salt compounds, novel disazo compounds, method for the production thereof and disazo compound-containing electrophotographic elements | — | 1985-09-10 |
| 4363859 | Electrophotographic photoconductor | Masaomi Sasaki | 1982-12-14 |
| 4332948 | Novel hydrazone compounds and process for preparing the same | Kiyoshi Sakai, Mitsuru Hashimoto | 1982-06-01 |
| 4327020 | Bis-azo compounds | Masaomi Sasaki, Masafumi Ohta | 1982-04-27 |
| 4314016 | Electrophotographic element having a bisazo photoconductor | Masafumi Ohta, Mitsuru Hashimoto | 1982-02-02 |
| 4314015 | Electrophotographic sensitive materials containing disazo compounds | Mitsuru Hashimoto, Kiyoshi Sakai, Masafumi Ohta, Akio Kozima, Masaomi Sasaki | 1982-02-02 |
| 4299896 | Electrophotographic sensitive materials containing a disazo pigment | Mitsuru Hashimoto, Kiyoshi Sakai, Masafumi Ohta, Akio Kozima, Masaomi Sasaki | 1981-11-10 |
| 4293492 | Disazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazole | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Masafumi Ohta | 1981-10-06 |
| 4260672 | Electrophotographic sensitive element having a photoconductive disazo pigment | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Masafumi Ohta | 1981-04-07 |
| 4251613 | Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Masafumi Ohta | 1981-02-17 |
| 4251614 | Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials | Masaomi Sasaki, Kiyoshi Sakai, Mitsuru Hashimoto, Masafumi Ohta | 1981-02-17 |
| 4245021 | Electrophotographic element having charge transport layer | Takeo Kazami, Kiyoshi Sakai, Mitsuru Hashimoto, Masaomi Sasaki, Masafumi Ohta | 1981-01-13 |