US4647282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material for ocular prosthetics
Assignee: Gosudarstvenny Nauchno-Issledovatelsky Institut Khimii I Tekhnologii Elementoorganicheskikh Soedineniy
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Filing: 1985-08-27
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Granted: 1987-03-03
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Expires: 2005-08-27
Abstract
Abstract An optical prosthetic device made from a material based on silicone compounds is a cured composition resulting from vulcanization of a mixture of alpha , omega -bis-trivinylsiloxyoligodimethyl(methylphenyl)-siloxane and alpha , omega -bis-trimethyl(dimethylhydro)siloxyoligomethyl(phenyl)methylhydro-silo xane in the presence of a polyaddition reaction catalyst based on the compounds of metals of the platinum group, the ratio of the first mixture component to the second one ranging within 100:1 and 100:20 parts by mass.
Inventors
- 👤 Svyatoslav N. Fedorov
- 👤 Eleonora V. Egorova
- 👤 Sergei R. Nanushyan
- 👤 Evgeny A. Chernyshev
- 👤 Oleg P. Spiridonov
- 👤 Igor L. Benenson
- 👤 Alexandr N. Polivanov
- 👤 Anatoly S. Shapatin
- 👤 Alexandr A. Karavaev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/045; A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61L; A61L27/00; A61L27/14; A61L27/18; C08G77/12; C08G77/20; C08G77/70; C08L; C08L83/00; C08L83/04; A61L2430/00; A61L2430/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A lens or other optical prosthetic device comprising a cured composition resulting from vulcanization of a mixture of α,ω-bis-trivinylsiloxyoligodimethyl(methylphenyl)-siloxane and α-ω-bis-trimethyl(dimethylhydro)siloxyoligomethyl(phenyl)methylhydro-siloxane in the presence of a polyaddition reaction catalyst based on the compounds of metals of the platinum group, the ratio of the first mixture component to the second one ranging within 100:1 and 100:20 parts by mass.
Claim 2
Dependent Claim
58 words
A lens or other optical prosthetic device comprising a cured composition resulting from vulcanization of a mixture of α,ω-bis-trivinylsiloxyoligodimethyl(methylphenyl)-siloxane and α-ω-bis-trimethyl(dimethylhydro)siloxyoligomethyl(phenyl)methylhydro-siloxane in the presence of a polyaddition reaction catalyst based on the compounds of metals of the platinum group, the ratio of the first mixture component to the second one ranging within 100:1 and 100:20 parts by mass.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |