Issued Patents All Time
Showing 526–550 of 583 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5002281 | Three-piece solid golf ball | Akihiro Nakahara, Mikio Yamada, Tadahiro Ebisuno, Kengo Oka | 1991-03-26 |
| 4965663 | Method for measuring of chromatic optical density | — | 1990-10-23 |
| 4959659 | Color picture forming apparatus and method | Nobuaki Sakurada, Hideaki Kawamura | 1990-09-25 |
| 4943360 | Process for recovering nitric acid and hydrofluoric acid from waste pickle liquors | Masanori Sugisawa, Yoshihito Nishimoto | 1990-07-24 |
| 4941037 | Color image processing method and apparatus in which a gradation-converted luminance signal and two non-linearly quantized color-difference signals having fewer bits than the luminance signal are used to address a color masking ROM | Yoshiro Udagawa | 1990-07-10 |
| 4939091 | Novel auerobasidium sp. microorganisms, method for obtaining the same and method for preparing erythritol with the same | Takafumi Kasumi, Naoya Kubo, Keiji Kainuma, Katsuo Wako, Hiroaki Ishizuka +2 more | 1990-07-03 |
| 4931864 | Image forming apparatus which performs gamma correction on the basis of a cumulative frequency distribution produced from a histogram of image data representing a selected area of an image | Hideaki Kawamura, Nobuaki Sakurada | 1990-06-05 |
| 4929539 | Silver halide photosensitive materials for color photography | Ryosuke Sato, Katsunori Kato, Hiroshi Sugita | 1990-05-29 |
| 4908311 | Process for enzymatic preparation of cellooligosaccharides | Hajime Taniguchi, Keiji Kainuma | 1990-03-13 |
| 4871647 | Method of forming color diffusion transfer image by heat development | Tawara Komamura, Satoru Ikeuchi, Masaru Iwagaki, Wataru Ishikawa | 1989-10-03 |
| 4862300 | Tape guide moving mechanism for magnetic record reproducing apparatus | Nobuyuki Kaku, Kenji Ogiro, Atsuo Osawa, Kouhei Takita | 1989-08-29 |
| 4846724 | Shielded cable assembly comprising means capable of effectively reducing undesirable radiation of a signal transmitted through the assembly | Yukio Hotta | 1989-07-11 |
| 4840882 | Heat developable color light-sensitive material | Masaru Iwagaki, Tawara Kumamura, Fumio Ishii, Kunihiro Koshizuka | 1989-06-20 |
| 4817707 | Heating soft floor mat | Kazuo Aoyama, Yukitaka Murata, Kiyoshi Hattori, Akio Okamoto, Kiyoshi Takahashi +1 more | 1989-04-04 |
| 4772911 | Image formation apparatus | Nobuaki Sakurada, Hideaki Kawamura | 1988-09-20 |
| 4772543 | Silver halide photosensitive materials for color photography | Ryosuke Sato, Katsunori Kato, Hiroshi Sugita | 1988-09-20 |
| 4770989 | Heat-developable color photosensitive element | Tawara Komamura, Masaru Iwagaki, Fumio Ishii, Kunihiro Koshizuka | 1988-09-13 |
| 4763466 | Steel cord for radial tire | Hideo Abe, Takaaki Hira, Toru Sasaki, Keiji Kumagai, Kunihiko Kataoka | 1988-08-16 |
| 4758885 | Method of processing color image | Yoshiro Udagawa | 1988-07-19 |
| 4731662 | Image processing method for processing an image signal differently depending on the range of an image characteristic thereof relative to the range within which an output device can reproduce the image characteristic | Yoshiro Udagawa | 1988-03-15 |
| 4714964 | Intermediate gradient image forming method | — | 1987-12-22 |
| 4682186 | Method for forming a color image | Nobuaki Sakurada, Hideaki Kawamura | 1987-07-21 |
| 4682216 | Color image picture forming process and apparatus which improves the quality of the black portions of the picture | Nobuaki Sakurada, Hideaki Kawamura, Jiro Moriyama | 1987-07-21 |
| 4672432 | Method for recording a color image using dots of colorants of different densities | Nobuaki Sakurada, Hideaki Kawamura | 1987-06-09 |
| 4667228 | Image signal processing apparatus | Hideaki Kawamura, Nobuaki Sakurada | 1987-05-19 |