US3997350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic storage material
Assignee: Mitsubishi Electric Corp
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Filing: 1974-03-27
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Granted: 1976-12-14
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Expires: 1994-03-27
Abstract
Abstract Holographic storage materials are disclosed including lithium niobate in the form of a single crystal added with either from 0.001 to 3.0 molar percent of iridium or from 0.01 to 1.0 molar percent of uranium for the three dimensional holography.
Inventors
- 👤 Hirofumi Ikeo
- 👤 Shoichi Noda
- 👤 Takao Sawada
- 👤 Eichi Okamoto
- 👤 Katsutoshi Muto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/05; G02F1/0541
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
24 words
A holographic storage material consisting essentially of a single crystal of LiNb0 3 and iridium in an amount of 0.001 to 3.0 molar percent.
Claim 2
Dependent Claim
24 words
A holographic storage material consisting essentially of a single crystal of LiNb0 3 and iridium in an amount of 0.001 to 3.0 molar percent.
Claim 3
Dependent Claim
22 words
A holographic storage material according to claim 1, where iridium is present in an amount of from 0.01 to 0.05 molar percent.
References Cited (Backward Citations)
US3799642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |