US2670332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-in-water coal tar emulsion and process of making it
Assignee: American Bitumuls and Asphalt Co
•
Filing: 1951-08-21
•
Granted: 1954-02-23
•
Expires: 1971-08-21
Abstract
No abstract record available.
Inventors
- 👤 Paul E Mccoy
- 👤 Carl E Neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:56
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
AN OIL-IN-WATER TYPE EMULSION OF HIGH ELECTROYLTIC AND STORAGE STABILITY AND COMPATIBLE WITH FORTIFYING SYNTHETIC RUBBER COMPRISING BY WEIGHT 10 TO 80 PARTS OF AT LEAST ONE BITUMEN SELECTED FROM THE GROUP CONSISTING OF COAL TAR AND COAL TAR PITCH, 1 TO 10 PARTS LIGNIN EMULSIFYING AGENT, 0.1 TO 1 PART THICKENING AGENT, CAUSTIC IN SUFFICIENT AMOUNT TO GIVE A PH OF AT LEAST 7.5 BUT LESS THAN 10, AND SUFFICIENT WATER TO MAKE A TOTAL OF 100 PARTS.
References Cited (Backward Citations)
US1758914A
Cited
US2374766A
Cited
US2431891A
Cited
US2483806A
Cited
US2550211A
Cited
US2446903A
Cited
US2578888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |