Patent US4336049A successfully refreshed from Google Patents.
US4336049A
Expired / Lapsed
US
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Method for producing multi-component glass fiber preform
Assignee: Fujikura Cable Works Ltd
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Filing: 1980-09-22
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Granted: 1982-06-22
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Expires: 2000-09-22
Abstract
Abstract A method for producing a multi-component glass fiber preform which comprises the steps of nebulizing an aqueous solution of at least one metal salt, and reacting the nebulized solution and a gaseous glass raw material with oxygen gas at a high temperature to produce particulate glass material deposited on a substrate. Apparatus for producing such a preform is also disclosed.
Inventors
- 👤 Shiro Takahashi
- 👤 Kazuo Sanada
- 👤 Koichi Inada
- 👤 Osamu Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:07
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/04; C03C13/045; C03C13/046; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/014; C03B37/01413; C03B37/0142; C03B37/018; C03B37/01807; C03B2201/00; C03B2201/06; C03B2201/30; C03B2201/34; C03B2201/50; C03B2201/54; C03B2203/00; C03B2203/10; C03B2203/22; C03B2203/26; C03B2207/00; C03B2207/04; C03B2207/06; C03B2207/08; C03B2207/20; C03B2207/26; C03B2207/28; C03B2207/30; C03B2207/32; C03B2207/34; C03B2207/40
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
55 words
A method for producing a multi-component glass fiber preform which comprises the steps of: (1) nebulizing an aqueous solution of at least one metal salt by supersonic vibration, and (2) reacting the nebulized solution and a gaseous glass raw material with oxygen at a high temperature to produce particulate glass material deposited on a substrate.
Claim 2
Independent Claim
55 words
A method for producing a multi-component glass fiber preform which comprises the steps of: (1) nebulizing an aqueous solution of at least one metal salt by supersonic vibration, and (2) reacting the nebulized solution and a gaseous glass raw material with oxygen at a high temperature to produce particulate glass material deposited on a substrate.
Claim 3
Dependent Claim
18 words
A method according to claim 1, in which said glass raw material is silicon chloride SiCl 4 .
Claim 4
Dependent Claim
39 words
A method according to claim 2, in which said glass raw material further comprises at least one material selected from the group consisting of germanium chloride GeCl 4 , phosphoryl chloride POCl 3 and boron bromide BBr 3 .
Claim 5
Dependent Claim
63 words
A method according to claim 1, in which said metal salt is selected from the group consisting of alkali metal nitrate, alkali metal carbonate, alkali metal sulfate, alkali metal acetate, alkaline earth metal nitrate, alkaline earth metal carbonate, alkaline earth metal sulfate, alkaline earth metal acetate, lead nitrate, lead carbonate, lead sulfate, lead acetate, lanthanium nitrate, lanthanium carbonate, lanthanium sulfate and lanthanium acetate.
Claim 6
Dependent Claim
55 words
A method according to claim 1, in which said glass raw material, said nebulized solution and said oxygen gas are applied into a flame produced by a burner to deposit said particulate glass material on said substrate, said substrate being in the form of a bar and being axially rotating and moving along the axis.
Claim 7
Dependent Claim
26 words
A method according to claim 5, in which said glass raw material and said oxygen gas are fed through individual concentric conduits of said burner respectively.
Claim 8
Dependent Claim
29 words
A method according to claim 5, in which said glass raw material, said nebulized solution and said oxygen gas are fed through individual concentric conduits of said burner, respectively.
Claim 9
Dependent Claim
21 words
A method according to claim 5, in which said particulate glass material is deposited on one end of said substrate bar.
Claim 10
Dependent Claim
22 words
A method according to claim 5, in which said particulate glass material is deposited on the outer periphery of said substrate bar.
Claim 11
Dependent Claim
69 words
A method according to claim 1, in which said substrate is in the form of a tube, said glass raw material, said nebulized solution and said oxygen gas being introduced into said tube, said tube being heated by a heating means from the outside thereof to deposit said particulate glass material on the inner peripheral surface thereof, and said heating means moving along said tube during the deposition operation.
Claim 12
Independent Claim
87 words
A method of producing a multi-component glass fiber preform which comprises: (1) nebulizing an aqueous solution of at least one metal salt with supersonic vibration; (2) introducing the thus nebulized solution from step (1) and an oxygen gas separately through individual concentric units of a burner which together with a gaseous glass raw material react at a high temperature to produce particulate glass material; and (3) directing the thus-produced particulate glass material onto a bar substrate while concurrently axially rotating and moving the bar along its axis.
Claim 13
Independent Claim
87 words
A method of producing a multi-component glass fiber preform which comprises: (1) nebulizing an aqueous solution of at least one metal salt with supersonic vibration; (2) introducing the thus nebulized solution from step (1) and an oxygen gas separately through individual concentric units of a burner which together with a gaseous glass raw material react at a high temperature to produce particulate glass material; and (3) directing the thus-produced particulate glass material onto a bar substrate while concurrently axially rotating and moving the bar along its axis.
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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |