US2805954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bituminous composition
Assignee: Beazer East Inc
•
Filing: 1954-01-12
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Granted: 1957-09-10
•
Expires: 1974-01-12
Abstract
No abstract record available.
Inventors
- 👤 William F Fair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:44
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A FLOWABLE COAL-TAR PITCH-CONTAINING COATING COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF APPROXIMATELY EQUAL QUANTITIES OF FILLER AND CUT-BACK-COAL-TAR PITCH, AND A SMALL AMOUNT OF ADDED DIMETHYLDIOCTADECYL AMMONIUM BENTONITE, SAID CUT-BACK CONTAINING FROM ABOUT 50 TO ABOUT 70% OF COAL-TAR PITCH HAVING A RING AND BALL SOFTENING POINT IN THE RANGE OF 100* TO 200*F. AND FROM ABOUT 50 TO ABOUT 30% OF COAL-TAR SOLVENT NAPHTHA CONTAINING AT LEAST ABOUT 50% OF RESINIFIABLE MATERIALS INCLUDING INDENE AND COUMARONE AND BOILING IN THE RANGE OF ABOUT 150-200*C.
Claim 2
Dependent Claim
86 words
A FLOWABLE COAL-TAR PITCH-CONTAINING COATING COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF APPROXIMATELY EQUAL QUANTITIES OF FILLER AND CUT-BACK-COAL-TAR PITCH, AND A SMALL AMOUNT OF ADDED DIMETHYLDIOCTADECYL AMMONIUM BENTONITE, SAID CUT-BACK CONTAINING FROM ABOUT 50 TO ABOUT 70% OF COAL-TAR PITCH HAVING A RING AND BALL SOFTENING POINT IN THE RANGE OF 100* TO 200*F. AND FROM ABOUT 50 TO ABOUT 30% OF COAL-TAR SOLVENT NAPHTHA CONTAINING AT LEAST ABOUT 50% OF RESINIFIABLE MATERIALS INCLUDING INDENE AND COUMARONE AND BOILING IN THE RANGE OF ABOUT 150-200*C.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |