Patent US429943A successfully refreshed from Google Patents.
Patent US3560210A successfully refreshed from Google Patents.
US3560210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recording a plurality of holograms and separable emulsion exposure package therefor
Assignee: International Business Machines Corp
•
Filing: 1967-01-13
•
Granted: 1971-02-02
•
Expires: 1987-01-13
Abstract
Abstract AN EMULSION EXPOSURE PACKAGE IS MADE OF A PHOTOSENSITIVE EMULSION ON A GLASS PLATE AND A REFLECTING SURFACE ON A BASE CEMENTED TO THE EMULSION BY AN ICE WATER SOLUBLE COATING OF A VINYL ACETAL RESIN. THE BASE WITH REFLECTING SURFACE IS REMOVED BY DISSOLVING THE COATING IN WATER AT A TEMPERATURE ON THE ORDER OF 5*C. A PLURALITY OF LAYERS OF EMULSION MAY ALSO BE CEMENTED TOGETHER BY A SOLUBLE COATING, AND MAY BE MOUNTED ON OR BETWEEN GLASS PLATES. SEVERAL HOLOGRAMS MAY BE RECORDED IN THE EMULSIONS.
Inventors
- 👤 Allen W Grobin Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/46; G03C1/76; G03C1/815; G03H; G03H1/00; G03H1/02; G03H1/26; G03H1/0252; G03H1/0256; G03H1/04; G03H1/0402; G03H2001/0413; G03H2001/2605; G03H2001/261; G03H2001/2615
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |