Patent US2709659A successfully refreshed from Google Patents.
US2709659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tap hole mix
Assignee: Union Carbide Corp
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Filing: 1951-06-30
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Granted: 1955-05-31
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Expires: 1971-06-30
Abstract
No abstract record available.
Inventors
- 👤 Leroy C Werking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:08
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/12; C21B7/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A SUBSTANTIALLY WATER-FREE, EXTRUDABLE, THERMOSETTING TAP HOLE MIX FOR BLAST FURNACES AND THE LIKE CONSISTING OF AT LEAST ONE COMMINUTED SOLID SELECTED FROM THE GROUP CONSISTING OF CLAY, FIRE BRICK, COAL AND COKE AND A BINDER COMPRISING TAR AND FURFURAL, IN A PROPORTION BY WEIGHT OF ABOUT 2 PARTS TAR TO 1 PART FURFURAL SAID SOLID BEING PRESENT IN A PROPORTION ABOUT 3 TO 5 TIMES BY WEIGHT THE PROPORTION OF BINDER.
Claim 2
Dependent Claim
72 words
A SUBSTANTIALLY WATER-FREE, EXTRUDABLE, THERMOSETTING TAP HOLE MIX FOR BLAST FURNACES AND THE LIKE CONSISTING OF AT LEAST ONE COMMINUTED SOLID SELECTED FROM THE GROUP CONSISTING OF CLAY, FIRE BRICK, COAL AND COKE AND A BINDER COMPRISING TAR AND FURFURAL, IN A PROPORTION BY WEIGHT OF ABOUT 2 PARTS TAR TO 1 PART FURFURAL SAID SOLID BEING PRESENT IN A PROPORTION ABOUT 3 TO 5 TIMES BY WEIGHT THE PROPORTION OF BINDER.
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) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |