US3429759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature cement
Assignee: Union Carbide Corp
•
Filing: 1963-06-17
•
Granted: 1969-02-25
•
Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Arnold A Kellar
- 👤 Morris B Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:15
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/003; C04B37/005; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; C04B35/63448; C04B35/63472; C04B35/63476; C04B35/63496; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/08; C04B2237/09; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/363; C04B2237/50; C04B2237/70; C04B2237/708
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A METHOD FOR JOINING HIGH DENSITY GRAPHITE SEGMENTS WHICH COMPRISES PREPARING A CEMENT COMPRISING PARTCLES OF FINELY DIVIDED TITANIUM DIBORIDE AND A CARBONIZABLE BINDER, SAID BINDER CAPABLE OF YIELDING BOND FORMING CARBON AT TEMPERATURS OF LESS THAN 2200*C. AND BEING PRESENT IN A RANGE OF FROM ABOUT 40 TO 60 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID TITANIUM DIBORIDE AND SIAD TITANIUM DIBORIDE HAVING A PARTICLE SIZE OF 74 MICRONS OR LESS, PROVIDING THE SEGMENTS TO BE JOINED WITH FLAT, PARALLEL AND MOSITURE FREE OPPOSED SURFACES, COATING THE SURFACE TO BE JOINED WITH SAID CEMENT, CLAMPING SAID SEGMENTS TOGETHER TO FORM A THIN JOINT, CURING SAID CEMENT IN SAID JOINT AND SUBSEQUENTLY HEATING SAID CEMENT IN SAID JOINT TO A TEMPERATURE OF A LEAST ABOUT 2200*C.
References Cited (Backward Citations)
GB618367A
Cited
US3120453A
Cited
US2992960A
Cited
US3132979A
Cited
US3140967A
Cited
US3175918A
Cited
US3187502A
Cited
US3165864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |