Photochromic monomers, photochromic polymers based on the same, photochromic recording media comprising the photochromic polymers, and 3D read/write optical memory comprising the recording media
US7452950B2 · kind B2 · utility
3Cited by
3References
25Claims
0Family size
Assignees
Inventors
- Alexandr Alexandrovich Dunaev
- Mikhail Vladimisovich Alfimov
- Valery Alexandrovich Barachevsky
- Valery Alexandrovidh Vasnev
- Igor Victorovich Zavarzin
- Sergey Ivanov
- Mukhammed Lastanbievich Keshtov
- Ajexel Ivanovich Kovalev
- Mikhall Mikhallovich Krayushkin
- Yury Alexandrovich Pyankov
- Alexandr Lyovich Rusanov
- Yury Petrovich Strokach
- Vladimir Nikolaevich Yarovenko
Key dates
| Filing date | Sep 26, 2005 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Nov 25, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/245
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Photochromic monomers and methods for preparing these photochromic monomers, photochromic polymers based on these photochromic monomers and methods for preparing these photochromic polymers, as well as the use of these photochromic polymers in a polymer binder as a two-photon recording medium for an optical 3D memory and photoswitches of optical signals are disclosed. The materials exhibit thermally irreversible photochromic transformations and other properties enabling the use of the photochromic polymers in an optical two-photon read/write memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.