US3196022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory practices
Assignee: Harbison Walker Refractories Co
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Filing: 1962-08-29
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Granted: 1965-07-20
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Expires: 1982-08-29
Abstract
No abstract record available.
Inventors
- 👤 Weaver Ernest Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:46
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
IN METHODS OF MAKING REFRACTORY BATCHES SUITABLE FOR MANUFACTURE OF BASIC REFRACTORIES BONDED WITH NONAQUEOUS TAR BONDING MATERIAL, INCLUDING THE STEPS OF MIXING REFRACTORY AND TAR TO FORM BATCHES, AND FORMING SHAPES FROM SAID BATCHES, THE IMPROVEMENT WHICH COMPRISES ADDING ABOUT 0.5 TO 1% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE BATCH, OF ANTHRACENE TO THE BATCHES BEFORE FORMING THE SHAPES TO THEREBY INCREASE THE HOT STRENGTH OF RESULTING SHAPES.
Claim 2
Dependent Claim
72 words
IN METHODS OF MAKING REFRACTORY BATCHES SUITABLE FOR MANUFACTURE OF BASIC REFRACTORIES BONDED WITH NONAQUEOUS TAR BONDING MATERIAL, INCLUDING THE STEPS OF MIXING REFRACTORY AND TAR TO FORM BATCHES, AND FORMING SHAPES FROM SAID BATCHES, THE IMPROVEMENT WHICH COMPRISES ADDING ABOUT 0.5 TO 1% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE BATCH, OF ANTHRACENE TO THE BATCHES BEFORE FORMING THE SHAPES TO THEREBY INCREASE THE HOT STRENGTH OF RESULTING SHAPES.
Claim 3
Dependent Claim
72 words
IN METHODS OF MAKING REFRACTORY BATCHES SUITABLE FOR MANUFACTURE OF BASIC REFRACTORIES BONDED WITH NONAQUEOUS TAR BONDING MATERIAL, INCLUDING THE STEPS OF MIXING REFRACTORY AND TAR TO FORM BATCHES, AND FORMING SHAPES FROM SAID BATCHES, THE IMPROVEMENT WHICH COMPRISES ADDING ABOUT 0.5 TO 1%, BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE BATCH, OF TRICHLOROBENZENE TO THE BATCHES BEFORE FORMING SHAPES THEREFROM IN ORDER TO INCREASE HOT STRENGTH IN SAID SHAPES.
Claim 4
Dependent Claim
72 words
IN METHODS OF MAKING REFRACTORY BATCHES SUITABLE FOR MANUFACTURE OF BASIC REFRACTORIES BONDED WITH NONAQUEOUS TAR BONDING MATERIAL, INCLUDING THE STEPS OF MIXING REFRACTORY AND TAR TO FORM BATCHES, AND FORMING SHAPES FROM SAID BATCHES, THE IMPROVEMENT WHICH COMPRISES ADDING ABOUT 0.5 TO 1%, BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE BATCH, OF TRICHLOROBENZENE TO THE BATCHES BEFORE FORMING SHAPES THEREFROM IN ORDER TO INCREASE HOT STRENGTH IN SAID SHAPES.
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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |