US3178307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot molded compacts for use in vacuum coating of optical interference films and method of preparing such films therefrom
Assignee: Eastman Kodak Co
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Filing: 1960-11-17
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Granted: 1965-04-13
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Expires: 1980-11-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Carnall
- 👤 Paul B Mauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:03
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C03C2217/00; C03C2217/20; C03C2217/28; C03C2217/284; C03C2217/285; C03C2217/287; C03C2217/288; C03C2217/29; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
IN A PROCESS OF VAPROIZING METALLIC SALTS IN A VACUUM TO COAT A SURFACE THEREWITH, THE STEP WHICH CONSISTS IN VAPORIZING A HOT MOLDED METALLIC SALT COMPACT WHICH HAS SUBSTANTIALLY THEORETICAL DENSITY,
Claim 2
Dependent Claim
32 words
IN A PROCESS OF VAPROIZING METALLIC SALTS IN A VACUUM TO COAT A SURFACE THEREWITH, THE STEP WHICH CONSISTS IN VAPORIZING A HOT MOLDED METALLIC SALT COMPACT WHICH HAS SUBSTANTIALLY THEORETICAL DENSITY,
References Cited (Backward Citations)
US2301456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |