US2503246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt emulsion
Assignee: Lubrizol Corp
•
Filing: 1948-09-28
•
Granted: 1950-04-11
•
Expires: 1968-09-28
Abstract
No abstract record available.
Inventors
- 👤 Willis G Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
AN ASPHALTIC COMPOSITION COMPRISING A MAJOR AMOUNT OF AN ASPHALT-IN-WATER EMULSION AND FROM ABOUT .05% TO ABOUT 2% OF A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
24 words
AN ASPHALTIC COMPOSITION COMPRISING A MAJOR AMOUNT OF AN ASPHALT-IN-WATER EMULSION AND FROM ABOUT .05% TO ABOUT 2% OF A COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
US2081876A
Cited
US2197835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |