Patent US3607197A successfully refreshed from Google Patents.
US3607197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of fiber optic stacks
Assignee: Thales Optronics Ltd
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Filing: 1968-11-06
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Granted: 1971-09-21
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Expires: 1988-11-06
Abstract
Abstract A process for manufacturing fiber optic stacks from an array of fibers subjected to heat and pressure in a fusion vessel, the array being separated from the vessel by a metal foil. The fusion vessel may be of graphite. A high-temperature lubricant, preferably boron nitride, may be used between the foil and the vessel.
Inventors
- 👤 John M Ballantine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:06
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/10; C03B37/14; C03B37/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
The apparatus of claim 1 including said lubricating means being a high-temperature lubricant.
Claim 2
Dependent Claim
11 words
The apparatus of claim 2 wherein said lubricant is boron nitride.
Claim 3
Dependent Claim
17 words
The apparatus of claim 1 including said lubricant means is graphite formed as part of said walls.
Claim 4
Dependent Claim
10 words
The apparatus of claim 1 wherein said foil is aluminum.
Claim 5
Dependent Claim
11 words
The apparatus of claim 5 wherein said lubricant is boron nitride.
References Cited (Backward Citations)
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US2994161A
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US3004368A
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US3245674A
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US3140528A
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US3331670A
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US3355274A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |