US4875759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fiber and method of producing the same
Assignee: Panasonic Holdings Corp
•
Filing: 1988-02-16
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Granted: 1989-10-24
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Expires: 2008-02-16
Abstract
Abstract Disclosed is an optical fiber which comprises a core, a clad formed on the core, and a protection layer formed on the clad. The protection layer is a monomolecular film of silane surface active agent. The optical fiber has high wet-proof characteristic.
Inventors
- 👤 Kazufumi Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:49
CPC Classifications
B; B82; B82Y; B82Y30/00; B29; B29D; B29D11/00; B29D11/00663
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
50 words
An optical fiber comprising: a core; a clad formed on said core; and a protection layer formed on said clad, said protection layer being a monomolecular film of a silane surface active agent of the formula CH 2 ═CH--(CH 2 ) n --SiCl 3 in which n is an integer.
Claim 2
Dependent Claim
50 words
An optical fiber comprising: a core; a clad formed on said core; and a protection layer formed on said clad, said protection layer being a monomolecular film of a silane surface active agent of the formula CH 2 ═CH--(CH 2 ) n --SiCl 3 in which n is an integer.
Claim 3
Dependent Claim
24 words
The optical fiber of claim 1, wherein vinyl groups of said silane surface active agent are bridged to one another by energy beam-irradiation thereto.
Claim 4
Dependent Claim
26 words
The optical fiber of claim 1, wherein fluorine is added to vinyl groups of said silane surface active agent by processing in plasma gas including fluorine.
Claim 5
Dependent Claim
26 words
The optical fiber of claim 1, wherein molecules of said silane surface active agent are polymerized to one another and are chemically adsorbed on said clad.
Claim 6
Dependent Claim
28 words
The optical fiber of claim 1, wherein hydroxy groups are added to vinyl groups of said silane surface active agent by use of diborane and alkaline hydrogen peroxide.
Claim 7
Dependent Claim
41 words
An optical fiber comprising: a core; and a clad formed on said core, said clad being a monomolecular film of a silane surface active agent of the formula CH 2 ═CH--(CH 2 ) n --SiCl 3 where n is an integer.
Claim 8
Dependent Claim
41 words
An optical fiber comprising: a core; and a clad formed on said core, said clad being a monomolecular film of a silane surface active agent of the formula CH 2 ═CH--(CH 2 ) n --SiCl 3 where n is an integer.
Claim 9
Dependent Claim
31 words
The optical fiber of claim 6, wherein molecules of said silane surface active agent are polymerized to one another by chemical bonding of Si--O and are chemically adsorbed on said core.
Claim 10
Dependent Claim
73 words
An optical fiber comprising: a core; a clad formed on said core; and a protection layer formed on said clad, said protection layer being a monomolecular film of a silane surface active agent of the formula CH 2 ═CH--(CH 2 ) n --SiCl 3 in which n is an integer and at least one of the CH 2 groups in the (CH 2 ) n is replaced by a functional group of --C.tbd.C--C.tbd.C--.
Claim 11
Dependent Claim
73 words
An optical fiber comprising: a core; a clad formed on said core; and a protection layer formed on said clad, said protection layer being a monomolecular film of a silane surface active agent of the formula CH 2 ═CH--(CH 2 ) n --SiCl 3 in which n is an integer and at least one of the CH 2 groups in the (CH 2 ) n is replaced by a functional group of --C.tbd.C--C.tbd.C--.
References Cited (Backward Citations)
DE2738506A1
Cited
JPS5593104A
Cited
US4431263A
Cited
US4544499A
Cited
JPS5771830A
Cited
US4560248A
Cited
US4496210A
Cited
US4539061A
Cited
US4762392A
Cited
US4707076A
Cited
US4715929A
Cited
US4756598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |