Patent US4436366A successfully refreshed from Google Patents.
US4436366A
Expired / Lapsed
US
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End capping an optical fiber
Assignee: FCI Americas Technology LLC
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Filing: 1981-02-17
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Granted: 1984-03-13
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Expires: 2001-02-17
Abstract
Abstract Contacting a rough cut optical fiber end to a light-transmissible, hardenable material supported on a smooth substrate and thereafter hardening the material to form a smooth flat light transmissible surface at the end of the fiber.
Inventors
- 👤 Edward A. Abramson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:05
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3855; G02B6/3861; G02B6/10; G02B6/14; G02B6/241; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4203; G02B6/3847; G02B6/3863
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
45 words
A cut optical fiber end capped with a light transmissible smooth flat surface comprising a hardened photopolymerizable layer having a maximum thickness about 0.45 times the diameter of the core divided by the numerical aperture of said core and a minimum thickness of 20 μm.
Claim 2
Dependent Claim
45 words
A cut optical fiber end capped with a light transmissible smooth flat surface comprising a hardened photopolymerizable layer having a maximum thickness about 0.45 times the diameter of the core divided by the numerical aperture of said core and a minimum thickness of 20 μm.
Claim 3
Dependent Claim
36 words
An end capped optical fiber according to claim 1 wherein the photopolymerizable layer is derived from a composition comprising trimethylol propane triacrylate, polyoxyethyl trimethylolpropane, polyethyleneoxide lauryl ether, 2-mercapto benzoxazole, styrene/maleic anhydride copolymer, 2,-2'-(o-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole and Michler's ketone.
Claim 4
Dependent Claim
46 words
A cut optical fiber end capped with a light transmissible smooth flat surface comprising a hardened thermally polymerizable layer having a maximum thickness about 0.45 times the diameter of the core divided by the numerical aperture of said core and a minimum thickness of 20 μm.
Claim 5
Dependent Claim
46 words
A cut optical fiber end capped with a light transmissible smooth flat surface comprising a hardened thermally polymerizable layer having a maximum thickness about 0.45 times the diameter of the core divided by the numerical aperture of said core and a minimum thickness of 20 μm.
Claim 6
Dependent Claim
36 words
An end capped optical fiber according to claim 3 wherein the thermally polymerizable layer is derived from a composition comprising trimethylol propane triacrylate, polyoxyethyl trimethylolpropane, polyethyleneoxide lauryl ether, 2-mercapto benzoxazole, styrene/maleic anhydride copolymer and benzoyl peroxide.
Claim 7
Dependent Claim
45 words
A cut optical fiber end capped with a light transmissible smooth flat surface comprising a hardened photocrosslinkable layer having a maximum thickness about 0.45 times the diameter of the core divided by the numerical aperture of said core and a minimum thickness of 20 μm.
Claim 8
Dependent Claim
45 words
A cut optical fiber end capped with a light transmissible smooth flat surface comprising a hardened photocrosslinkable layer having a maximum thickness about 0.45 times the diameter of the core divided by the numerical aperture of said core and a minimum thickness of 20 μm.
References Cited (Backward Citations)
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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) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |