Patent US2652341A successfully refreshed from Google Patents.
US2652341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt emulsion
Assignee: Lubrizol Corp
•
Filing: 1950-03-25
•
Granted: 1953-09-15
•
Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 Willis G Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:09
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05; Y10S516/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
AN ASPHALTIC EMULSION COMPRISING A MAJOR AMOUNT OF A STABLE CLAY ASPHALT-IN-WATER EMULSION AND A MINOR AMOUNT OF A SURFACE ACTIVE AGENT, WHICH SURFACE ACTIVE AGENT IS SLIGHTLY WATER SOLUBLE BUT TO ONLY A MINOR EXTENT AND IS SOLUBLE IN ASPHALTIC MATERIALS TO A SUBSTANTIALLY GREATER EXTENT, SAID SURFACE ACTIVE AGENT COMPRISING AN ALKALI METAL PARAFFIN WAX HYDROXY PHENYL SULFONATE.
References Cited (Backward Citations)
US1690020A
Cited
US1237852A
Cited
US1751690A
Cited
US1854348A
Cited
US2033657A
Cited
US2197835A
Cited
US2336468A
Cited
US2442972A
Cited
US2317959A
Cited
US2433847A
Cited
US2393573A
Cited
US2416134A
Cited
US2503246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |