US3346680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding comminuted nonplastic inorganic material
Assignee: Corning Glass Works
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Filing: 1965-01-26
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Granted: 1967-10-10
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Expires: 1985-01-26
Abstract
No abstract record available.
Inventors
- 👤 Edward A Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; C04B35/63404; C04B35/63416; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; C04B33/28; C04B33/30; C04B35/63424; C04B35/63448; C04B35/63488; C04B35/63492
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THE PROCESS OF MAKING SINTERED ARTICLES FROM COMMINUTED NONPLASTIC INORGANIC MATERIAL COMPRISING THE STEPS OF: (A) PREPARING A MOLDING BATCH MIXTURE CONSISTING OF COMMINUTED NONPLASTIC INORGANIC MATERIAL AS A MAJOR COMPONENT BY WEIGHT THEREOF, A MELTED ORGANIC VEHICLE THAT IS SOLID AT NORMAL ROOM TEMPERATURE AND PRESSURE, SAID VEHICLE HAVING A MELTING POINT BELOW ABOUT 200*C. AND HAVING A VAPOR PRESSURE OF AT LEAST ABOUT 1 MM. OF HG AT THE MELTING POINT OF SAID VEHICLE UNDER AMBIENT ATMOSPHERIC PRESSURE OF SUBSTANTIALLY ONE ATMOSPHERE, AND AN ORGANIC DEFLOCCULANT SELECTED FROM MONOHYDRIC ALCOHOLS CONTAINING AT LEAST EIGHT CARBON ATOMS. (B) MOLDING SAID MIXTURE, WHILE SAID VEHICLE REMAINS MELTED, TO THE DESIRED SHAPE, (C) COOLING SAID MOLDED MIXTURE TO SOLIDIFY SAID VEHICLE AND HARDEN THE MIXTURE INTO A RIGIDIFIED GREEN BODY, (D) SUBLIMING SAID VEHICLE FROM SAID GREEN BODY, AND (E) FIRING SAID GREEN BODY TO SINTER THE NONPLASTIC INORGANIC MATERIAL INTO A COHERENT BODY.
Claim 2
Dependent Claim
153 words
THE PROCESS OF MAKING SINTERED ARTICLES FROM COMMINUTED NONPLASTIC INORGANIC MATERIAL COMPRISING THE STEPS OF: (A) PREPARING A MOLDING BATCH MIXTURE CONSISTING OF COMMINUTED NONPLASTIC INORGANIC MATERIAL AS A MAJOR COMPONENT BY WEIGHT THEREOF, A MELTED ORGANIC VEHICLE THAT IS SOLID AT NORMAL ROOM TEMPERATURE AND PRESSURE, SAID VEHICLE HAVING A MELTING POINT BELOW ABOUT 200*C. AND HAVING A VAPOR PRESSURE OF AT LEAST ABOUT 1 MM. OF HG AT THE MELTING POINT OF SAID VEHICLE UNDER AMBIENT ATMOSPHERIC PRESSURE OF SUBSTANTIALLY ONE ATMOSPHERE, AND AN ORGANIC DEFLOCCULANT SELECTED FROM MONOHYDRIC ALCOHOLS CONTAINING AT LEAST EIGHT CARBON ATOMS. (B) MOLDING SAID MIXTURE, WHILE SAID VEHICLE REMAINS MELTED, TO THE DESIRED SHAPE, (C) COOLING SAID MOLDED MIXTURE TO SOLIDIFY SAID VEHICLE AND HARDEN THE MIXTURE INTO A RIGIDIFIED GREEN BODY, (D) SUBLIMING SAID VEHICLE FROM SAID GREEN BODY, AND (E) FIRING SAID GREEN BODY TO SINTER THE NONPLASTIC INORGANIC MATERIAL INTO A COHERENT BODY.
References Cited (Backward Citations)
US2422809A
Cited
US3234308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |