US3253500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doubly clad light-conducting fibers with the outer cladding being partially light absorbing
Assignee: American Optical Corp
•
Filing: 1964-05-11
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Granted: 1966-05-31
•
Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:02
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; G02B6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A LIGHT-CONDUCING FIBER COMPRISING A CORE, AN INNER CLADDING AND AN OUTER CLADDING ALL FUSED TOGETHER, SAID CORE BEING FORMED OF A TRANSPARENT GLASS HAVING A PREDETERMINED INDEX OF REFRACTION, SAID INNER CLADDING BEING FORMED OF A TRANSPARENT GLASS HAVING AN INDEX OF REFRACTION OF A LOWER VALUE THAN THAT OF SAID CORE GLASS, SAID OUTER CLADDING BEING FORMED OF A GLASS WHICH IS PARTIALLY TRANSPARENT AND PARTIALLY LIGHT ABSORBING TO RECEIVE AND ABSORB A SUBSTANTIAL AMOUNT OF LIGHT REACHING SAID OUTER CLADDING FROM SAID INNER CLADDING, THE LIGHT ABSORBENCY OF THE GLASS OF SAID OUTER CLADDING BEING SUCH THAT A THICKNESS KL OF SAID GLASS WILL ABSORB AT LEAST 90% OF LIGHT DIRECTED THEREINTO WHEN K EQUALS THE RATIO OF THE VOLUME OF THE GLASS OF SAID CLADDING TO THE VOLUME OF THE GLASS OF SAID CORE AND L EQUALS THE LENGTH OF THE FIBER.
Claim 2
Dependent Claim
146 words
A LIGHT-CONDUCING FIBER COMPRISING A CORE, AN INNER CLADDING AND AN OUTER CLADDING ALL FUSED TOGETHER, SAID CORE BEING FORMED OF A TRANSPARENT GLASS HAVING A PREDETERMINED INDEX OF REFRACTION, SAID INNER CLADDING BEING FORMED OF A TRANSPARENT GLASS HAVING AN INDEX OF REFRACTION OF A LOWER VALUE THAN THAT OF SAID CORE GLASS, SAID OUTER CLADDING BEING FORMED OF A GLASS WHICH IS PARTIALLY TRANSPARENT AND PARTIALLY LIGHT ABSORBING TO RECEIVE AND ABSORB A SUBSTANTIAL AMOUNT OF LIGHT REACHING SAID OUTER CLADDING FROM SAID INNER CLADDING, THE LIGHT ABSORBENCY OF THE GLASS OF SAID OUTER CLADDING BEING SUCH THAT A THICKNESS KL OF SAID GLASS WILL ABSORB AT LEAST 90% OF LIGHT DIRECTED THEREINTO WHEN K EQUALS THE RATIO OF THE VOLUME OF THE GLASS OF SAID CLADDING TO THE VOLUME OF THE GLASS OF SAID CORE AND L EQUALS THE LENGTH OF THE FIBER.
References Cited (Backward Citations)
US2825260A
Cited
US3141105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |