US3189668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of slip casting basic refractory materials
Assignee: Harbison Walker Refractories Co
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Filing: 1963-10-24
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Granted: 1965-06-15
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Expires: 1983-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Eldon D Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:59
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
IN A METHOD OF SLIP CASTING CHEMICALLY BASIC REFRACTORY SHAPES FROM A BATCH OF DEAD BURNED MAGNESITE REFRACTORY AND AN AQUEOUS TEMPERING FLUID, THE IMPROVEMENT WHICH COMPRISES ADDING ABOUT 0.2 TO 5%, BY WEIGHT BASED ON THE TOTAL REFRACTORY BATCH, OF FINELY DIVIDED SULPHUR TO THE BATCH.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |