US3140190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphite base ceramic refractory composition
Assignee: Boeing Co
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Filing: 1961-01-23
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Granted: 1964-07-07
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Lazzaro John F Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:21
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/58085; C04B35/58092; C04B35/52; C04B35/528; C04B35/532
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD OF PREPARING A HEAT AND OXIDATION-RESISTANT BODY HAVING THE STEPS OF INTIMATELY AND UNIFORMLY BLENDING (1) POWDERED CONSTITUENTS CONSISTING OF A GRAPHITE BASE PRESENT IN AN AMOUNT COMPRISING ABOUT 30%-60% BY WEIGHT OF SAID CONSTITUENTS AND SELECTED FROM THE GROUP CONSISTING OF GRAPHITE, COKE, AND MIXTURES THEREOF, AND A CERAMIC ADDITIVE PRESENT IN AN AMOUNT COMPRISING ABOUT 70%-40% BY WEIGHT OF SAID CONSTITUENTS AND CONSISTING ESSENTIALLY OF MOLYBDENUM DISILICIDE AND AN INTERMETALLIC OF TITANIUM SELECTED FROM THE GROUP CONSISTING OF TITANIUM DIBORIDE AND TITANIUM NITRIDE, AND (2) A LIQUID CARBONACEOUS BINDER FOR THE POWDERED CONSTITUENTS; COMPRESSING THE BLEND INTO A SHAPED BODY; AND HEAT TREATING THE BODY FIRST TO RESINIFY THE BINDER AND THENCE TO GRAPHITIZE IT TO PRODUCE A STRUCTURALLY STRONG COMPOSITION.
Claim 2
Independent Claim
125 words
A METHOD OF PREPARING A HEAT AND OXIDATION-RESISTANT BODY HAVING THE STEPS OF INTIMATELY AND UNIFORMLY BLENDING (1) POWDERED CONSTITUENTS CONSISTING OF A GRAPHITE BASE PRESENT IN AN AMOUNT COMPRISING ABOUT 30%-60% BY WEIGHT OF SAID CONSTITUENTS AND SELECTED FROM THE GROUP CONSISTING OF GRAPHITE, COKE, AND MIXTURES THEREOF, AND A CERAMIC ADDITIVE PRESENT IN AN AMOUNT COMPRISING ABOUT 70%-40% BY WEIGHT OF SAID CONSTITUENTS AND CONSISTING ESSENTIALLY OF MOLYBDENUM DISILICIDE AND AN INTERMETALLIC OF TITANIUM SELECTED FROM THE GROUP CONSISTING OF TITANIUM DIBORIDE AND TITANIUM NITRIDE, AND (2) A LIQUID CARBONACEOUS BINDER FOR THE POWDERED CONSTITUENTS; COMPRESSING THE BLEND INTO A SHAPED BODY; AND HEAT TREATING THE BODY FIRST TO RESINIFY THE BINDER AND THENCE TO GRAPHITIZE IT TO PRODUCE A STRUCTURALLY STRONG COMPOSITION.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |