Patent US4425375A successfully refreshed from Google Patents.
US4425375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End capping an optical fiber
Assignee: FCI Americas Technology LLC
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Filing: 1983-04-25
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Granted: 1984-01-10
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Expires: 2003-04-25
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
2026-10-29 15:57
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3855; G02B6/3861; G02B6/241; G02B6/3847; G02B6/3863
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
67 words
Method for forming a surface with low optical scattering loss at the end of a cut optical fiber comprising: (a) contacting said fiber end to a thin, light-transmissible, hardenable layer supported on a smooth substrate to embed said fiber in said hardenable layer, (b) hardening said layer while said fiber remains embedded in said layer to form a smooth, flat surface at the end of said fiber.
Claim 2
Dependent Claim
67 words
Method for forming a surface with low optical scattering loss at the end of a cut optical fiber comprising: (a) contacting said fiber end to a thin, light-transmissible, hardenable layer supported on a smooth substrate to embed said fiber in said hardenable layer, (b) hardening said layer while said fiber remains embedded in said layer to form a smooth, flat surface at the end of said fiber.
Claim 3
Dependent Claim
67 words
Method for forming a surface with low optical scattering loss at the end of a cut optical fiber comprising: (a) contacting said fiber end to a thin, light-transmissible, hardenable layer supported on a smooth film to embed said fiber in said hardenable layer, (b) hardening said layer while said fiber remains embedded in said layer to form a smooth, flat surface at the end of said fiber.
Claim 4
Dependent Claim
67 words
Method for forming a surface with low optical scattering loss at the end of a cut optical fiber comprising: (a) contacting said fiber end to a thin, light-transmissible, hardenable layer supported on a smooth film to embed said fiber in said hardenable layer, (b) hardening said layer while said fiber remains embedded in said layer to form a smooth, flat surface at the end of said fiber.
Claim 5
Dependent Claim
29 words
A method according to claim 2 wherein the film is removed from the fiber end after said layer is hardened and said hardened layer remains on said fiber end.
Claim 6
Dependent Claim
13 words
A method according to claim 1 wherein said hardenable layer is a polymer.
Claim 7
Dependent Claim
19 words
A method according to claim 4 wherein the polymer layer is hardened by polymerizing in the absence of oxygen.
Claim 8
Dependent Claim
14 words
A method according to claim 4 wherein the polymer layer is a photopolymer layer.
Claim 9
Dependent Claim
13 words
A method according to claim 2 wherein said hardenable layer is a polymer.
Claim 10
Dependent Claim
14 words
A method according to claim 1 wherein the hardenable layer is a photocrosslinkable layer.
Claim 11
Dependent Claim
14 words
A method according to claim 2 wherein the hardenable layer is a photocrosslinkable layer.
Claim 12
Dependent Claim
13 words
A method according to claim 1 wherein the hardenable layer is thermally curable.
Claim 13
Dependent Claim
13 words
A method according to claim 2 wherein the hardenable layer is thermally curable.
Claim 14
Dependent Claim
14 words
A method according to claim 1 wherein the hardenable layer is a thermoplastic layer.
Claim 15
Dependent Claim
14 words
A method according to claim 2 wherein the hardenable layer is a thermoplastic layer.
Claim 16
Dependent Claim
19 words
A method according to claim 2 wherein the hardenable layer is supported on a film that is light transmissible.
Claim 17
Dependent Claim
14 words
A method according to claim 14 wherein said light transmissible film is polyethylene terephthalate.
Claim 18
Dependent Claim
13 words
A method according to claim 14 wherein said light transmissible film is polyethylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |