US5015068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated optical fiber and methods of making
Assignee: Furukawa Electric North America Inc
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Filing: 1990-02-15
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Granted: 1991-05-14
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Expires: 2010-02-15
Abstract
Abstract A drawn optical fiber (21) is provided with inner and outer layers (42,44) of coating material to protect the optical fiber during handling and use. The coating materials are such that they are characterized by being curable upon exposure to different portions of the light spectrum. In a preferred embodiment, the coating material of the inner layer includes a photoinitiator which absorbs light in the visible portion of the light spectrum whereas the outer coating material of the outer layer includes a photoinitiator which absorbs light in the ultraviolet light portion of the light spectrum.
Inventors
- 👤 James R. Petisce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:04
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; G02B6/4431; C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/1065
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
A coated optical fiber, comprising: an optical glass fiber; an inner coating material which engages and encloses the optical glass fiber; and an outer coating material which engages and which encloses the inner coating material, the coating materials being ones which are characterized as being curable upon exposure to different portions of the light spectrum in that one of coating materials absorbs light energy in the visible light spectrum and the other in the ultraviolet light spectrum.
Claim 2
Dependent Claim
77 words
A coated optical fiber, comprising: an optical glass fiber; an inner coating material which engages and encloses the optical glass fiber; and an outer coating material which engages and which encloses the inner coating material, the coating materials being ones which are characterized as being curable upon exposure to different portions of the light spectrum in that one of coating materials absorbs light energy in the visible light spectrum and the other in the ultraviolet light spectrum.
Claim 3
Dependent Claim
39 words
The coated optical fiber of claim 1, wherein said inner coating material includes a photoinitiator which absorbs in the ultraviolet light region of the spectrum and the outer coating material a photoinitiator which absorbs in the visible light spectrum.
Claim 4
Dependent Claim
86 words
A coated optical fiber, comprising: and optical glass fiber; an inner layer comprising a coating material which engages and encloses the optical glass fiber, said coating material of said inner layer being one which is characterized as being curable upon exposure to be visible light spectrum; and an outer layer comprising a coating material which engages and which encloses the inner layer, said coating material of said outer layer being one which is characterized as being curable upon exposure of light of the ultraviolet light spectrum.
Claim 5
Dependent Claim
86 words
A coated optical fiber, comprising: and optical glass fiber; an inner layer comprising a coating material which engages and encloses the optical glass fiber, said coating material of said inner layer being one which is characterized as being curable upon exposure to be visible light spectrum; and an outer layer comprising a coating material which engages and which encloses the inner layer, said coating material of said outer layer being one which is characterized as being curable upon exposure of light of the ultraviolet light spectrum.
Claim 6
Dependent Claim
94 words
A coated optical fiber, comprising: an optical glass fiber; an inner layer comprising a cured coating material which engages and encloses said optical glass fiber, said coating material of said inner layer being one which is characterized as having been cured upon exposure to light energy of the visible light spectrum; and an outer layer comprising a cured coating material which engages and which encloses said inner layer, said coating material of said outer layer being one which is characterized as having been cured upon exposure to light energy of the ultraviolet light spectrum.
Claim 7
Dependent Claim
94 words
A coated optical fiber, comprising: an optical glass fiber; an inner layer comprising a cured coating material which engages and encloses said optical glass fiber, said coating material of said inner layer being one which is characterized as having been cured upon exposure to light energy of the visible light spectrum; and an outer layer comprising a cured coating material which engages and which encloses said inner layer, said coating material of said outer layer being one which is characterized as having been cured upon exposure to light energy of the ultraviolet light spectrum.
Claim 8
Dependent Claim
20 words
The coated optical fiber of claim 4, wherein the coating materials of said inner and outer layers are cured simultaneously.
Claim 9
Dependent Claim
44 words
The coating optical fiber of claim 4, wherein said inner coating material includes a photoinitiator which absorbs in the visible light portion of the spectrum; and wherein said outer coating material includes a photoinitiator which absorbs in the ultraviolet light region of the spectrum.
Claim 10
Dependent Claim
17 words
The coated optical fiber of claim 6, wherein said photoinitiator of said coating material comprises a camphorquinone.
Claim 11
Dependent Claim
21 words
The coated optical fiber of claim 6, wherein said photoinitiator of said outer coating material comprises a 2,2 dimethoxy, 2 phenylacetophenone.
Claim 12
Dependent Claim
22 words
The coated optical fiber of claim 6, wherein said photoinitiator of said outer coating material comprises 1 phenyl, 2 hydroxy, 2 methylpropanone.
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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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |