US3980390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical transmission fiber
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1975-03-20
•
Granted: 1976-09-14
•
Expires: 1995-03-20
Abstract
Abstract An optical transmission fiber which is formed by applying and baking a liquid resin composition or a solution or a dispersion prepared by dissolving or dispersing in a solvent a liquid or solid resin composition onto a glass fiber for optical transmission and, further, coating thereover by melt extrusion a thermoplastic resin composition.
Inventors
- 👤 Yutaka Yamamoto
- 👤 Munetaka Kawaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:31
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/1065; C03C25/24; C03C25/26; G; G02; G02B; G02B6/00; G02B6/02; G02B6/02395; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; G02B6/036; G02B6/03616; G02B6/03638; G02B6/03644; G02B6/03655
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
53 words
An optical transmission fiber which is formed by applying and baking a liquid resin composition or a solution or a dispersion prepared by dissolving or dispersing in a solvent a liquid or solid resin composition onto a glass fiber for optical transmission and, further, coating thereover by melt extrusion a thermoplastic resin composition.
Claim 2
Dependent Claim
53 words
An optical transmission fiber which is formed by applying and baking a liquid resin composition or a solution or a dispersion prepared by dissolving or dispersing in a solvent a liquid or solid resin composition onto a glass fiber for optical transmission and, further, coating thereover by melt extrusion a thermoplastic resin composition.
Claim 3
Dependent Claim
64 words
An optical transmission fiber as claimed in claim 1, wherein a step for coating and baking a liquid resin composition or a solution or a dispersion prepared by dissolving or dispersing a liquid or solid resin composition in a solvent is performed immediately after the drawing for an optical transmission glass fiber and before the contact of said glass fiber with other solid objects.
Claim 4
Dependent Claim
38 words
An optical transmission fibers as claimed in claim 1, wherein the refractive index of each of the resin compositions is equal to or more than the refractive index of the outer portion of said optical transmission glass fiber.
Claim 5
Dependent Claim
37 words
An optical transmission fiber as claimed in claim 1, wherein the resin as a basic ingredient in the resin composition to be coated and baked has in its molecules polar or functional groups comprising anyone of ##EQU2##
Claim 6
Dependent Claim
32 words
An optical transmission fiber as claimed in 1, wherein the resin composition to be coated and baked has an elastic modulus more than 200 kg/mm 2 after the coating and baking thereof.
Claim 7
Dependent Claim
31 words
An optical transmission fiber as claimed in claim 1, wherein the resin as a basic ingredient in the resin composition to be coated and baked contains -OH groups in its molecules.
Claim 8
Dependent Claim
32 words
An optical transmission fiber as claimed in claim 1, wherein the resin as a basic ingredient in the resin composition to be coated and baked comprises epoxy resins or epoxy resin derivatives.
Claim 9
Dependent Claim
42 words
An optical transmission fiber as claimed in claim 1, wherein the resin composition to be coated and baked contains as a basic ingredient unsaturated polyester resin produced by the reaction of epoxy resin with unsaturated carboxylic acid or unsaturated carboxylic acid anhydride.
Claim 10
Dependent Claim
23 words
An optical transmission fiber as claimed in claim 1, wherein the resin composition to be applied and baked contains therein silane coupling agents.
Claim 11
Dependent Claim
19 words
An optical transmission fiber as claimed in claim 1, wherein said glass fiber is a clad type glass fiber.
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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |