US2472605A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of depositing optical interference coatings
Assignee: Eastman Kodak Co
•
Filing: 1946-04-15
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Granted: 1949-06-07
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Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 Daniel B Mcrae
- 👤 John H Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:08
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/54; C23C14/542; C23C14/545; C23C14/547; C03; C03C; C03C17/00; C03C17/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2239452A
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US2220861A
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US2377268A
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US2338234A
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US2382439A
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US2408614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |