Patent US6175871B1 successfully refreshed from Google Patents.
US4973129A
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US
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Optical fiber element
Assignee: Nippon Sheet Glass Co Ltd
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Filing: 1989-08-29
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Granted: 1990-11-27
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Expires: 2009-08-29
Abstract
Abstract An optical fiber element includes a non-armored optical glass fiber element having a numerical aperture of 0.35 or more, and a resin layer obtaining by applying a resin composition to a surface of the non-armored optical glass fiber element in contact therewith and by curing the resin composition, the cured resin layer essentially consisting of the resin composition having a Shore D hardness value of 65 or more defined in the Japanese Industrial Standards (JIS) at room temperature.
Inventors
- 👤 Takashi Fukuzawa
- 👤 Yoshihiko Hayashi
- 👤 Takashi Kishimoto
- 👤 Yoichi Furuse
- 👤 Sadao Kuzuwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:53
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/106; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
An optical fiber element comprising: a non-armored optical glass fiber element having a numerical aperture of not less than 0.35; and a cured resin layer obtaining by applying a resin composition to a surface of the non-armored optical glass fiber element in contact therewith and by curing the resin composition, the cured resin layer essentially consisting of the resin composition having a Shore D hardness value of not less than 65 specified in the Japanese Industrial Standards (JIS) at room temperature.
Claim 2
Dependent Claim
81 words
An optical fiber element comprising: a non-armored optical glass fiber element having a numerical aperture of not less than 0.35; and a cured resin layer obtaining by applying a resin composition to a surface of the non-armored optical glass fiber element in contact therewith and by curing the resin composition, the cured resin layer essentially consisting of the resin composition having a Shore D hardness value of not less than 65 specified in the Japanese Industrial Standards (JIS) at room temperature.
Claim 3
Dependent Claim
19 words
An element in accordance with claim 1, wherein the non-armored optical glass fiber element essentially consists of compound glass.
Claim 4
Dependent Claim
19 words
An element in accordance with claim 1, wherein the resin composition is a thermosetting or ultraviolet curing resin composition.
Claim 5
Dependent Claim
32 words
An element in accordance with claim 3, wherein the resin composition contains at least one substance selected from the group which consist of epoxy acrylate and urethane acrylate as a major component.
Claim 6
Dependent Claim
20 words
An element in accordance with claim 1, wherein the resin layer has a thickness of not less than 10 μm.
Claim 7
Dependent Claim
20 words
An element in accordance with claim 5, wherein the resin layer has a thickness of not less than 15 μm.
Claim 8
Dependent Claim
20 words
An element in accordance with claim 5, wherein the resin layer has a thickness of not less than 20 μm.
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) | 1993-11-26 | 1994-05-28 | 1994-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-26 | 1998-05-28 | 1998-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-26 | 2002-05-28 | 2002-11-27 | $7700.00 | Window Closed / Lapsed |