US5013126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof optical fiber cable
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1990-10-09
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Granted: 1991-05-07
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Expires: 2010-10-09
Abstract
Abstract A waterproof optical fiber cable comprising at least one coated optical fiber and a waterproof compound surround said at least one coated optical fiber, wherein a swelling degree of a coating material of the optical fiber induced by said waterproof compound is not larger than 10%, which optical fiber cable has stable performances.
Inventors
- 👤 Tomoyuki Hattori
- 👤 Nobuhiro Akasaka
- 👤 Toru Yamanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:01
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4407; G02B6/4408; G02B6/4429; G02B6/44384
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
47 words
A waterproof optical fiber cable which comprises at least one coated optical fiber and a waterproof compound surrounding said at least one coated optical fiber, wherein a swelling degree of a coating material of the optical fiber induced by said waterproof compound is not larger than 10%.
Claim 2
Dependent Claim
47 words
A waterproof optical fiber cable which comprises at least one coated optical fiber and a waterproof compound surrounding said at least one coated optical fiber, wherein a swelling degree of a coating material of the optical fiber induced by said waterproof compound is not larger than 10%.
Claim 3
Dependent Claim
27 words
The waterproof optical fiber cable according to claim 1, wherein said waterproof compound comprises an oil component, a thickening agent and an agent for preventing oil separation.
Claim 4
Dependent Claim
25 words
The waterproof optical fiber cable according to claim 2, wherein said waterproof compound contains no oil component having a molecular weight of smaller than 300.
Claim 5
Dependent Claim
32 words
The waterproof optical fiber cable according to claim 1, wherein said waterproof compound has a cone penetration of at least 200 at -40° C. and not larger than 450 at 80° C.
Claim 6
Dependent Claim
27 words
The waterproof optical fiber cable according to claim 4, wherein said waterproof compound comprises an oil component having a pour point of not higher than -30° C.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |