Patent US4609437A successfully refreshed from Google Patents.
US4609437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing an optical fiber comprising a coating of a metal
Assignee: US Philips Corp
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Filing: 1985-03-12
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Granted: 1986-09-02
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Expires: 2005-03-12
Abstract
Abstract Optical fibres consisting of a synthetic resin at least on their outer circumference are continuously provided with a metal coating by electroplating. For this purpose the synthetic resin coating is made electrically conductive, for example, by continuous electroless metallization.
Inventors
- 👤 Johan C. W. Kruishoop
- 👤 Petrus E. J. Legierse
- 👤 Johannes VAN Ruler
- 👤 Dirk J. Broer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:42
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
A method of manufacturing an optical fiber with a coating of a metal, in which method a fiber, at least the outer circumference of which consists of a synthetic resin, is provided with an electrically conductive layer upon which conductive layer a metal coating is provided by electroplating, characterized in that, in a continuous process, an electrically conductive layer of metal is provided on said fiber by the electrodeless deposition achieved by the reduction of a metal salt applied to said outer circumference and a layer of a metal is then provided on said electrically conductive layer by electroplating.
Claim 2
Independent Claim
99 words
A method of manufacturing an optical fiber with a coating of a metal, in which method a fiber, at least the outer circumference of which consists of a synthetic resin, is provided with an electrically conductive layer upon which conductive layer a metal coating is provided by electroplating, characterized in that, in a continuous process, an electrically conductive layer of metal is provided on said fiber by the electrodeless deposition achieved by the reduction of a metal salt applied to said outer circumference and a layer of a metal is then provided on said electrically conductive layer by electroplating.
Claim 3
Dependent Claim
29 words
A method as claimed in claim 1, characterized in that silver, copper, cobalt, nickel, gold or tin is provided on the outer circumference of the fibre by electroless metallization.
Claim 4
Dependent Claim
49 words
A method as claimed in claim 1, characterized in that a layer of a metal is provided continuously by electroplating on the electrically conductive layer in at least two successive steps, in which the current density is increased and the metal-coated fibre is electrically contacted between the successive steps.
Claim 5
Independent Claim
82 words
A method of manufacturing an optical fiber with a coating of a metal, in which method a fiber at least the outer circumference of which consists of a synthetic resin, is provided with an electrically conductive layer upon which conductive layer a metal coating is provided by electroplating, characterized in that, in a continuous process, an electrically conductive metal oxide is provided on said fiber and a layer of a metal is then provided on said conductive metal oxide layer by electroplating.
Claim 6
Independent Claim
82 words
A method of manufacturing an optical fiber with a coating of a metal, in which method a fiber at least the outer circumference of which consists of a synthetic resin, is provided with an electrically conductive layer upon which conductive layer a metal coating is provided by electroplating, characterized in that, in a continuous process, an electrically conductive metal oxide is provided on said fiber and a layer of a metal is then provided on said conductive metal oxide layer by electroplating.
Claim 7
Dependent Claim
49 words
A method as claimed in claim 4, characterized in that a layer of a metal is provided continuously by electroplating on the electrically conductive layer in at least two successive steps, in which the current density is increased and the metal-coated fiber is electrically contacted between the successive steps.
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) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |