Patent US3112208A successfully refreshed from Google Patents.
US3112208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of carbon articles
Assignee: Union Carbide Corp
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Filing: 1960-11-29
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Granted: 1963-11-26
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Expires: 1980-11-29
Abstract
No abstract record available.
Inventors
- 👤 Paul C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:40
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE PROCESS OF MAKING SHAPED CARBON ARTICLES WHICH CONSISTS IN MIXING GRAPHITE FLOUR AND CARBON BLACK WITH ABOUT 25 TO ABOUT 35 PERCENT BY WEIGHT OF A THERMOSETTING BINDER CONSISTING OF A FURFURALDEHYDE-KETONE CONDENSATION PRODUCT OF HYDROGENATED MONO- AND DI-FURFURYLIDENE KETONE AND FROM ABOUT 2.5 TO ABOUT 3.5 PERCENT OF DIETHYL SULFATE, FORMING THE RESULTING MIXTURE TO DESIRED SHAPE, AND HEATING THE SHAPE TO ABOUT 700*C.
Claim 2
Dependent Claim
66 words
THE PROCESS OF MAKING SHAPED CARBON ARTICLES WHICH CONSISTS IN MIXING GRAPHITE FLOUR AND CARBON BLACK WITH ABOUT 25 TO ABOUT 35 PERCENT BY WEIGHT OF A THERMOSETTING BINDER CONSISTING OF A FURFURALDEHYDE-KETONE CONDENSATION PRODUCT OF HYDROGENATED MONO- AND DI-FURFURYLIDENE KETONE AND FROM ABOUT 2.5 TO ABOUT 3.5 PERCENT OF DIETHYL SULFATE, FORMING THE RESULTING MIXTURE TO DESIRED SHAPE, AND HEATING THE SHAPE TO ABOUT 700*C.
References Cited (Backward Citations)
US2507390A
Cited
US2600764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |