US3567549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a fiber-optics image-transmitting device
Assignee: Carl Zeiss AG
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Filing: 1967-11-28
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Granted: 1971-03-02
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Expires: 1987-11-28
Abstract
Abstract A FIBER-OPTICS IMAGE-TRANSMITTING DEVICE IS PRODUCED BY HOLDING A BUNDLE OF SUBSTANTIALLY STRAIGHT-FIBERS-EACH FIBER CONSISTING OF A CORE OF LIGHT-CONDUCTING MATERIAL COVERED BY JACKET OF TRANSPARENT MATERIAL HAVING A LOWER INDEX OF REFRACTION THAN SAID CORE MATERIAL-AT ONE END AND IMMERSING THE BUNDLE WITH THE OTHER END ENTERING FIRST INTO A WETTING LIQUID WITHDRAWING SAID BUNDLE FROM THE WETTING LIQUID, AND AFTER FLOWING-OFF OF THE EXCESS LIQUID THEN FIXING THE ENDS OF SAID BUNDLE SO AS TO CAUSE THE INDIVIDUAL FIBERS AT SAID ENDS TO ADHERE PERMANENTLY TO EACH OTHER.
Inventors
- 👤 Dietrich Hoffmeister
- 👤 Josef Ladel
- 👤 Fritz Schleich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:45
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/10; C03B37/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |