US3256104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory
Assignee: Harbison Walker Refractories Co
•
Filing: 1965-08-02
•
Granted: 1966-06-14
•
Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest P Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:42
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/12; C21B7/125; C04; C04B; C04B35/00; C04B35/01; C04B35/013; Y; Y10; Y10S; Y10S264/00; Y10S264/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN UNCONSOLIDATED REFRACTORY RAMMING MIXES BONDED WITH SELECTED NONAQUEOUS CARBONACEOUS BOND MATERIALS WHICH MIXES CONSIST ESSENTIALLY OF ABOUT 100 PARTS, BY WEIGHT, OF REFRACTORY AND ON THE ORDER OF 3 TO 10 PARTS, BY WEIGHT, OF THE BOND MATERIAL, THE IMPROVEMENT CONSISTING ESSENTIALLY OF SAID BOND MATERIAL BEING AT LEAST ABOUT 3 PARTS, BY WEIGHT, BASED ON TOTAL REFRACTORY WEIGHT, OF AN UNSATURATED FLUID PITCH WHICH IS THE RESIDUE RECOVERED FROM THE DISTILLATON OF VEGETABLES OILS TO REMOVE FATTY ACIDS THEREFROM.
Claim 2
Dependent Claim
25 words
THE MIX OF CLAIM 8 IN WHICH THE BOND MATERIAL FURTHER INCLUDES MATERIALS SELECTED FROM THE GROUP CONSISTING OF GRAPHITE, LAMB BLACK, AND MIXTURES THEREOF.
References Cited (Backward Citations)
US222188A
Cited
US3070449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |