Patent US2922930A successfully refreshed from Google Patents.
US4072400A
Expired / Lapsed
US
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Buffered optical waveguide fiber
Assignee: Corning Glass Works
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Filing: 1976-06-04
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Granted: 1978-02-07
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Expires: 1996-06-04
Abstract
Abstract A buffered optical waveguide fiber suitable for use in forming an optical waveguide cable is described. An optical waveguide fiber is first coated with a glass protective coating applied to the exterior longitudinal surface of the fiber with a release agent coating applied over the glass protective coating. Thereafter, a protective layer of a thermoplastic synthetic resinous material surrounding the fiber is disposed over the coating of release agent.
Inventors
- 👤 Stewart A. Claypoole
- 👤 Daniel C. Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:29
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4402
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
54 words
A buffered optical waveguide fiber comprising an optical waveguide fiber, a resinous protective coating applied to the external longitudinal surface of said fiber, a coating of a release agent applied over said protective coating, and a protective layer of a thermoplastic synthetic resinous material surrounding said fiber disposed over said coating of release agent.
Claim 2
Dependent Claim
54 words
A buffered optical waveguide fiber comprising an optical waveguide fiber, a resinous protective coating applied to the external longitudinal surface of said fiber, a coating of a release agent applied over said protective coating, and a protective layer of a thermoplastic synthetic resinous material surrounding said fiber disposed over said coating of release agent.
Claim 3
Dependent Claim
19 words
The buffered optical waveguide fiber of claim 1 wherein said coating of release agent is formed of silicone oil.
Claim 4
Dependent Claim
18 words
The buffered optical waveguide fiber of claim 1 wherein said synthetic resinous material is a polytetramethylene-etherglycol based thermoplastic.
Claim 5
Dependent Claim
16 words
The buffered optical waveguide fiber of claim 2 wherein said protective coating is polyvinylidene fluoridepolytetrafluoroethylene copolymer.
Claim 6
Dependent Claim
18 words
The buffered optical waveguide fiber of claim 4 wherein said synthetic resinous material is a polytetramethylene-etherglycol based thermoplastic.
Claim 7
Independent Claim
63 words
The method of forming a buffered optical waveguide fiber comprising the steps of providing an optical waveguide fiber, applying a resinous protective coating to the external longitudinal surface of said fiber, applying a coating of a release agent over said protective coating, and applying a protective layer of a thermoplastic synthetic resinous material to each said fiber over said coating of release agent.
Claim 8
Independent Claim
63 words
The method of forming a buffered optical waveguide fiber comprising the steps of providing an optical waveguide fiber, applying a resinous protective coating to the external longitudinal surface of said fiber, applying a coating of a release agent over said protective coating, and applying a protective layer of a thermoplastic synthetic resinous material to each said fiber over said coating of release agent.
Claim 9
Dependent Claim
16 words
The method of claim 6 wherein said coating of release agent is formed of silicone oil.
Claim 10
Dependent Claim
15 words
The method of claim 6 wherein said synthetic resinous material is a polytetramethylene-etherglycol based thermoplastic.
Claim 11
Dependent Claim
14 words
The method of claim 7 wherein said resinous protective coating is polyvinylidene fluoride-polytetrafluoroethylene copolymer.
Claim 12
Dependent Claim
14 words
The method of claim 9 wherein said synthetic resinous material is polytetramethylene-etherglycol based thermoplastic.
Claim 13
Dependent Claim
30 words
The method of claim 10 wherein said coating of silicone oil is applied to said longitudinal surface of said fiber by drawing said fiber through a reservoir of silicone oil.
Claim 14
Dependent Claim
17 words
The method of claim 11 wherein said protective layer is extruded over said coating of silicone oil.
Claim 15
Dependent Claim
27 words
The method of claim 10 wherein said coating of silicone oil is applied by passing said fiber in contact with a wick moistened with said silicone oil.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |