Issued Patents All Time
Showing 1–25 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12189163 | Light modulation element and information recording medium | Tsuyoshi Yamauchi, Tomoe Sato | 2025-01-07 |
| 11703798 | Light modulation element and information recording medium | Tsuyoshi Yamauchi, Nobuko Oikawa | 2023-07-18 |
| 11014390 | Luminescent medium and method for reading luminescent medium | Yuko Aoyama, Jun Sato, Tsuyoshi Yamauchi | 2021-05-25 |
| 10656597 | Authenticity determination device and method for security medium including reflective volume hologram, and security medium including reflective volume hologram | Tsuyoshi Yamauchi, Koji Eto, Nobuko Oikawa, Tomoe Sato | 2020-05-19 |
| 10359735 | Display article | Tomoe Sato, Koji Eto, Tsuyoshi Yamauchi, Nobuko Oikawa | 2019-07-23 |
| 9452631 | Light-emitting medium | Yoko Sekine, Manabu Yamamoto, Tsuyoshi Yamauchi, Akiko Kitamura, Sakurako Hatori | 2016-09-27 |
| 9383648 | Anti-counterfeiting marker sheet and manufacturing method therefor, anti-counterfeiting function-imparting member, and article provided with anti-counterfeiting function | Yoko Sekine, Tsuyoshi Yamauchi | 2016-07-05 |
| 9223235 | Fine particles, particle group, anti-counterfeiting ink, anti-counterfeiting toner, anti-counterfeiting sheet, and anti-counterfeiting medium | Tsuyoshi Yamauchi, Manabu Yamamoto, Akiko Kitamura, Yoko Sekine | 2015-12-29 |
| 9158281 | Method for preparing a hologram recording medium | Hidekazu Okuno, Masato Taninaka | 2015-10-13 |
| 9127181 | Taggant particle group; and anti-counterfeit ink, anti-counterfeit toner, anti-counterfeit sheet, and anti-counterfeit medium comprising same | Tsuyoshi Yamauchi, Manabu Yamamoto, Akiko Kitamura, Yoko Sekine | 2015-09-08 |
| 9028929 | Light-emitting medium | Yoko Sekine, Manabu Yamamoto, Tsuyoshi Yamauchi, Akiko Kitamura, Sakurako Hatori | 2015-05-12 |
| 9001401 | Fabrication process of multi-image type hologram, and multi-image type hologram fabricated by that process | Tsuyoshi Yamauchi, Masachika Watanabe, Tomoko Kumasawa, Makio Kurashige, Akiko Kitamura +1 more | 2015-04-07 |
| 8941904 | Hologram sheet and hologram observation sheet using same, and blinding device | Koji Eto, Yasuyuki Oyagi, Masachika Watanabe | 2015-01-27 |
| 8885237 | Hologram preparation method, hologram and security medium using such hologram | — | 2014-11-11 |
| 8749862 | Method for preparing a hologram recording medium | Hidekazu Okuno, Masato Taninaka | 2014-06-10 |
| 8743443 | Hologram fabrication process, and hologram fabricated by that process | Tomoko Kumasawa, Makio Kurashige, Masachika Watanabe | 2014-06-03 |
| 8630032 | Method for preparing hologram recording medium | Masato Taninaka, Masayo Shima | 2014-01-14 |
| 8564866 | Computer-generated hologram including splice planes for reconstructing a full-color image with high resolution and its fabrication method | Akiko Kitamura | 2013-10-22 |
| 8523238 | Light-emitting medium and method of confirming light-emitting medium | Yoko Sekine, Manabu Yamamoto, Tsuyoshi Yamauchi, Akiko Kitamura, Sakurako Hatori | 2013-09-03 |
| 8456722 | Forgery prevention medium with a volume hologram layer and information layer in different colors | Tsuyoshi Yamauchi, Makio Kurashige, Tomoki YASUDA | 2013-06-04 |
| 8405892 | Method and device for manufacturing a hologram recording medium in which different original images are reproduced when observed from different positions | — | 2013-03-26 |
| 8395842 | Method for manufacturing an optical element that enables reordering and reproduction of a stereoscopic image as a hologram | — | 2013-03-12 |
| 8339693 | Fabrication process for computer-generated holograms, computer-generated hologram fabricated by that process, and computer-generated hologram | — | 2012-12-25 |
| 8223412 | Computer-generated hologram including splice planes for reconstructing a full-color image with high resolution and its fabrication method | Akiko Kitamura | 2012-07-17 |
| 8107144 | Method and device for manufacturing a hologram recording medium containing multiple objects that are reproduced when observed from different positions | — | 2012-01-31 |