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US4460696A
Expired / Lapsed
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Acid-soluble glass for making flexible optical fiber bundle
Assignee: Fujinon Corp
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Filing: 1982-10-27
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Granted: 1984-07-17
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Expires: 2002-10-27
Abstract
Abstract An acid-soluble glass for use in making a flexible optical fiber bundle, which comprises the following composition: 20.0 mol %<SiO 2 <48.0 mol % 25.0 mol %<B 2 O 3 <50.0 mol % 5.0 mol %≦BaO≦6.0 mol % 7.0 mol %<Na 2 O, K 2 O, or Li 2 O, or total of the two or more thereof<18.0 mol % 71.0 mol %<SiO 2 +B 2 O 3 +BaO<80.0 mol % 7.4 mol %<ZnO<12.0 mol % 1.8 mol %<Al 2 O 3 <7 mol % The acid-soluble glass exhibits a high solubility in an acid, a high resistance to water, and a high viscosity at the fiber-forming temperature.
Inventors
- 👤 Yuho Harada
- 👤 Shigeo Kuwayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:40
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/10; C03B37/14; C03B37/15; C03C; C03C13/00; C03C13/04; C03C13/045; C03C13/046; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
An acid-soluble glass for manufacturing a flexible fiber optical bundle consisting essentially of the following composition: 20.0 mol %<SiO 2 <48.0 mol % 25.0 mol %<B 2 O 3 <50.0 mol % 5.0 mol %≦BaO≦6.0 mol % 7.0 mol %<Na 2 O, K 2 O, or Li 2 O, or total of the two or more thereof<18.0 mol % 71.0 mol %<SiO 2 +B 2 O 3 +BaO<80.0 mol % 7.4 mol %<ZnO<12.0 mol % 1.8 mol %<Al 2 O 3 <7 mol %.
Claim 2
Dependent Claim
84 words
An acid-soluble glass for manufacturing a flexible fiber optical bundle consisting essentially of the following composition: 20.0 mol %<SiO 2 <48.0 mol % 25.0 mol %<B 2 O 3 <50.0 mol % 5.0 mol %≦BaO≦6.0 mol % 7.0 mol %<Na 2 O, K 2 O, or Li 2 O, or total of the two or more thereof<18.0 mol % 71.0 mol %<SiO 2 +B 2 O 3 +BaO<80.0 mol % 7.4 mol %<ZnO<12.0 mol % 1.8 mol %<Al 2 O 3 <7 mol %.
Claim 3
Dependent Claim
25 words
An acid-soluble glass as defined in claim 1 further comprising not more than 5 mol % of at least one of MgO, CaO and SrO.
Claim 4
Dependent Claim
12 words
An acid-soluble glass as defined in claim 1 further comprising a colorant.
Claim 5
Dependent Claim
13 words
An acid-soluble glass as defined in claim 1 further comprising a fining agent.
Claim 6
Dependent Claim
28 words
An acid-soluble glass as defined in claim 4 wherein said fining agent is selected from thegroup consisting of As 2 O 3 and Sb 2 O 3 .
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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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |