US3206279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lanthanum fluoride infrared transmitting optical elements
Assignee: Eastman Kodak Co
•
Filing: 1961-09-18
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Granted: 1965-09-14
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Carnall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/02; C; C04; C04B; C04B35/00; C04B35/515; C04B35/553; C04B35/622; C04B35/64; C04B35/645; Y; Y10; Y10S; Y10S425/00; Y10S425/808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A HOT-PRESSED ATICLE OF MANUFACURE CONSISTING OF LANTHANUM FLUORIDE IN THE FORM OF A SOLID UNITARY HOMOGENEOUSLY POLYCRYSTALLINE SUBSTANCE.
Claim 2
Dependent Claim
19 words
A HOT-PRESSED ATICLE OF MANUFACURE CONSISTING OF LANTHANUM FLUORIDE IN THE FORM OF A SOLID UNITARY HOMOGENEOUSLY POLYCRYSTALLINE SUBSTANCE.
References Cited (Backward Citations)
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Cited
US2303783A
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US2592113A
Cited
US2335325A
Cited
US2420955A
Cited
US2511224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |