US2884391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting cement comprising a
Assignee: —
•
Filing: —
•
Granted: 1959-04-28
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Expires: 1976-04-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:40
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; C04B14/00; C04B14/02; C04B14/022; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08L; C08L61/00; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A THERMOSETTING CEMENT CAPABLE OF RETAINING ITS BONDING STRENGTH DURING AND AFTER HEATING TO TEMPERATURES AS HIGH AS 1000* C., COMPRISING 20% TO 32% OF A PITCH, 20% TO 32% OF AT LEAST ONE PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF FURFURAL AND FURFURYL ALCOHOL, 30% TO 47% COMMINUTED CARBONACEOUS PARTICLES AND 2% TO 10% OF AN ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SULPHUR CHLORIDE, BENZENE SULFONYL CHLORIDE, SULFURIC ACID AND BORON TRIFLUORIDE; SAID PITCH HAVING A MELTING POINT OF BETWEEN 150* C. AND 225* C., A COKING VALUE AT 1000* OF FROM 60% TO 80% HAVING A SOLUBILITY IN QUINOLINE OF 75% TO 80% HAVING A SPECIFIC GRAVITY OF AT LEAST 1.25, AND BEING COMPATIBLE WITH FURFURYL COMPOUNDS AT TEMPERATURES BELOW 100* C.
Claim 2
Dependent Claim
128 words
A THERMOSETTING CEMENT CAPABLE OF RETAINING ITS BONDING STRENGTH DURING AND AFTER HEATING TO TEMPERATURES AS HIGH AS 1000* C., COMPRISING 20% TO 32% OF A PITCH, 20% TO 32% OF AT LEAST ONE PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF FURFURAL AND FURFURYL ALCOHOL, 30% TO 47% COMMINUTED CARBONACEOUS PARTICLES AND 2% TO 10% OF AN ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID, SULPHUR CHLORIDE, BENZENE SULFONYL CHLORIDE, SULFURIC ACID AND BORON TRIFLUORIDE; SAID PITCH HAVING A MELTING POINT OF BETWEEN 150* C. AND 225* C., A COKING VALUE AT 1000* OF FROM 60% TO 80% HAVING A SOLUBILITY IN QUINOLINE OF 75% TO 80% HAVING A SPECIFIC GRAVITY OF AT LEAST 1.25, AND BEING COMPATIBLE WITH FURFURYL COMPOUNDS AT TEMPERATURES BELOW 100* C.
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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |