US3019117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory blocks
Assignee: Johns Manville Fiber Glass Inc
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Filing: 1957-12-23
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Granted: 1962-01-30
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Labino Dominick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; C03C14/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF PRODUCING A RIGID, GAS IMPERVIOUS REFRACTORY WHICH COMPRISES IMPREGNATING A MASS OF FINE GLASS FIBER WITH AN AQUEOUS SOLUTION WHEREIN THE SOLUTE IS SELECTED FROM THE GROUP CONSISTING OF COBALT NITRATE, NICKEL NITRATE, IRON NITRATE, CHROMIUM NITRATE, AND COPPER NITRATE, HEATING AND COMPACTING THE MASS OF IMPREGNATED GLASS FIBER TO REMOVE THE AQUEOUS SOLVENT AND CONVERT THE SOLUTE TO AN OXIDE AND TO COMPRESS THE MASS OF IMPREGNATED FIBER INTO INTIMATE CONTACTING RELATION, FUSING THE COMPRESSED FIBER AND METAL OXIDE INTO A GAS IMPERVIOUS BODY BY HEATING THE COMPRESSED MASS TO A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF FROM 2900 TO 3500*F., AND COOLING THE FUSED MASS TO EFFECT A RIGID, SOLID REFRACTORY BODY.
Claim 2
Independent Claim
117 words
THE METHOD OF PRODUCING A RIGID, GAS IMPERVIOUS REFRACTORY WHICH COMPRISES IMPREGNATING A MASS OF FINE GLASS FIBER WITH AN AQUEOUS SOLUTION WHEREIN THE SOLUTE IS SELECTED FROM THE GROUP CONSISTING OF COBALT NITRATE, NICKEL NITRATE, IRON NITRATE, CHROMIUM NITRATE, AND COPPER NITRATE, HEATING AND COMPACTING THE MASS OF IMPREGNATED GLASS FIBER TO REMOVE THE AQUEOUS SOLVENT AND CONVERT THE SOLUTE TO AN OXIDE AND TO COMPRESS THE MASS OF IMPREGNATED FIBER INTO INTIMATE CONTACTING RELATION, FUSING THE COMPRESSED FIBER AND METAL OXIDE INTO A GAS IMPERVIOUS BODY BY HEATING THE COMPRESSED MASS TO A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF FROM 2900 TO 3500*F., AND COOLING THE FUSED MASS TO EFFECT A RIGID, SOLID REFRACTORY BODY.
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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |