Patent US2709660A successfully refreshed from Google Patents.
US2709660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tap hole mix
Assignee: Union Carbide Corp
•
Filing: 1951-06-30
•
Granted: 1955-05-31
•
Expires: 1971-06-30
Abstract
No abstract record available.
Inventors
- 👤 Howard L Larson
- 👤 Lester L Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:59
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/12; C21B7/125
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
PLASITC EXTRUDABLE MIX FOR PLUGGING THE TAP HOLE OF CARBON LINED BLAST FURNACES, SAID MIX CONSISTING OF COMMINUTED SOLID REFRACTORY FILLER MATERIAL, MOISTENED AND RENDERED PLASTIC BY WATER AND AT LEAST ONE ORGANIC LIQUID SELECTED FROM THE GROUP CONSISTING OF NORMAL PROPYL ALCOHOL, METHYL KETONE, BUTYL AMINE, ETHYLENE GLYCOL, AND THE MONOMETHYL ETHER OF ETHYLENE GLYCOL, SAID MIX CONTAINING BY WEIGHT 10 PER CENT OF WATER AND 3.8 PER CENT OF SAID ORGANIC LIQUID, SAID WATER HAVING A TENDENCY TO CAUSE OXIDATION OF SAID CARBON LINING WHEN SAID HOLE IS PLUGGED WITH SAID MIX AND SAID ORGANIC LIQUID INHIBITING SUCH OXIDATION.
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 |