US4795234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced optical fiber
Assignee: UBE-NITTO KASEI Co Ltd 2 IWAMOTO-CHO KANDA CHIYODA-KU TOKYO JAPAN
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Filing: 1987-09-01
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Granted: 1989-01-03
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Expires: 2007-09-01
Abstract
Abstract A single-core cord of reinforced optical fiber comprising an optical fiber element including an optical fiber and a primary coating formed of silicone rubber and covering the optical fiber, and a secondary coating covering the optical fiber element. The secondary coating has a three-layer structure which comprises a reinforcing inner layer formed of longitudinally arranged reinforcing fibers and cured non-styrene binder comprising an unsaturated polyester resin containing a non-styrene monomer as a cross-linking agent, a reinforcing outer layer formed of fiber-reinforced cured styrene resin and a surface layer formed of thermoplastic resin, the reinforcing outer layer and the surface layer being intimately bonded together with an anchoring effect therebetween.
Inventors
- 👤 Takayoshi Nakasone
- 👤 Yoji Ida
- 👤 Kenji Kozuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:41
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; G02B6/4431; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/28; B29C70/40; B29C70/50; B29C70/52; B29C70/521; G02B6/4402; B29L; B29L2011/00; B29L2011/0075
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A single-core cord of reinforced optical fiber comprising: an optical fiber element including an optical fiber and a primary coating formed of silicone rubber and covering said optical fiber; and a secondary coating covering said optical fiber element and having a three-layer structure, said three-layer structure comprising a reinforcing inner layer formed of longitudinally arranged reinforcing fibers and cured non-styrene resin binder comprising an unsaturated polyester resin containing a non-styrene monomer as a cross-linking agent, a reinforcing outer layer formed of fiber-reinforced cured styrene resin, and a surface layer formed of thermoplastic resin, said reinforcing outer layer and said surface layer being intimately bonded together with an anchoring effect therebetween.
Claim 2
Dependent Claim
110 words
A single-core cord of reinforced optical fiber comprising: an optical fiber element including an optical fiber and a primary coating formed of silicone rubber and covering said optical fiber; and a secondary coating covering said optical fiber element and having a three-layer structure, said three-layer structure comprising a reinforcing inner layer formed of longitudinally arranged reinforcing fibers and cured non-styrene resin binder comprising an unsaturated polyester resin containing a non-styrene monomer as a cross-linking agent, a reinforcing outer layer formed of fiber-reinforced cured styrene resin, and a surface layer formed of thermoplastic resin, said reinforcing outer layer and said surface layer being intimately bonded together with an anchoring effect therebetween.
Claim 3
Dependent Claim
33 words
A single-core cord of reinforced optical fiber as claimed in claim 1, wherein said non-styrene resin binder in said inner layer is formed by cross-linking a high-boiling non-styrene monomer with an unsaturated alkyd.
Claim 4
Dependent Claim
29 words
A single-core cord of reinforced optical fiber as claimed in claim 2, wherein said non-styrene monomer is selected from the group consisting of allyl compounds, methacrylic acid and methacrylates.
Claim 5
Dependent Claim
42 words
A single-core cord of reinforced optical fiber as claimed in claim 3, wherein said non-styrene monomer is selected from the group consisting of diallyl phthalate, triallyl phthalate, methacrylic acid, methyl methacrylate, butyl methacrylate, hexyl methacrylate, ethylene dimethacrylate, 2-hydroxyethyl methacrylate, and glycidyl methacrylate.
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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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |