US2465713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing hardened optical coatings by electron bombardment
Assignee: RCA Corp
•
Filing: 1946-03-29
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Granted: 1949-03-29
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Expires: 1966-03-29
Abstract
No abstract record available.
Inventors
- 👤 Glenn L Dimmick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:46
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/0694; C23C14/02; C23C14/021; C23C14/022; C23C14/22; C23C14/24; C23C14/58; C23C14/5806; C23C14/582; H; H01; H01J; H01J37/00; H01J37/02; H01J37/24; H01J37/241; H01J37/30; H01J37/305; H01J37/3053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2239642A
Cited
US2322613A
Cited
US2207656A
Cited
GB538274A
Cited
US2282677A
Cited
US2391595A
Cited
US2394930A
Cited
US2420724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |