US4639080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fibers coated with modified 1,4-polybutadienes
Assignee: Nitto Denko Corp
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Filing: 1984-08-28
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Granted: 1987-01-27
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Expires: 2004-08-28
Abstract
Abstract A coating material for optical glass fibers is disclosed. The material is comprised of 1,4-polybutadienes having functional groups or modified polybutadienes derived from the 1,4-polybutadienes having introduced therein polymerizable double bonds different from the double bonds present in the 1,4-polybutadienes.
Inventors
- 👤 Takao Kimura
- 👤 Nobuo Inagaki
- 👤 Mitsuo Yoshihara
- 👤 Fumihiko Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:08
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4402; C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/106; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/672; C08G18/69; Y; Y10; Y10S; Y10S525/00; Y10S525/91; Y10S525/911
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
71 words
An optical glass fiber coated with a cured product formed from a coating material comprising 1,4-polybutadienes having functional groups or modified polybutadienes derived from the 1,4-polybutadienes and having introduced therein polymerizable double bonds different from the double bonds present in the 1,4-polybutadienes, further including a compound having polymerizable double bonds, and wherein the modified polybutadienes are polycondensation products of the 1,4-polybutadienes having functional groups and polyfunctional compounds having polymerizable double bonds.
Claim 2
Dependent Claim
71 words
An optical glass fiber coated with a cured product formed from a coating material comprising 1,4-polybutadienes having functional groups or modified polybutadienes derived from the 1,4-polybutadienes and having introduced therein polymerizable double bonds different from the double bonds present in the 1,4-polybutadienes, further including a compound having polymerizable double bonds, and wherein the modified polybutadienes are polycondensation products of the 1,4-polybutadienes having functional groups and polyfunctional compounds having polymerizable double bonds.
Claim 3
Dependent Claim
30 words
An optical glass fiber of claim 1, wherein the compound having polymerizable double bonds is a member selected from the group consisting of acrylate esters, methacrylate esters and allyl esters.
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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |