US3594167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing hologram using glasseous recording medium
Assignee: AT&T Inc
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Filing: 1968-04-16
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Granted: 1971-07-20
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Expires: 1988-04-16
Abstract
Abstract CERTAIN GLASSY COMPOSITIONS COMPRISING ARSENIC, SULFUR, AND OPTIONALLY INCLUDED OTHER ELEMENTS, MAKE EXCELLENT HOLOGRAPHIC RECORDING MEDIA WITH LARGE MULTIPLE STORAGE CAPABILITIES AND GOOD DIFFRACTED POWERS.
Inventors
- 👤 Frank P Laming
- 👤 Arthur D Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705; G03H; G03H1/00; G03H1/02; G03H2001/0208; G03H2001/0212; G03H2001/026; G03H2001/0264; G03H2240/00; G03H2240/20; G03H2240/23; G03H2240/24; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |