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 12:24
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.
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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) | 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 |