US3093610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic products
Assignee: Lubrizol Corp
•
Filing: 1959-12-04
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Granted: 1963-06-11
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Expires: 1979-12-04
Abstract
No abstract record available.
Inventors
- 👤 Robert G Wurstner
- 👤 Jahnke Richard William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE PROCESS OF REDUCING THE PENETRATION VALUE OF A PETROLEUM RESIDUUM TO PRODUCE AN IMPROVED ASPHALTIC MATERIAL WHICH COMPRISES PREPARING A MIXTURE OF 100 PARTS OF SAID PETROLEUM RESIDUUM, FROM ABOUT 3.5 TO ABOUT 7.5 PARTS OF A LOWER OLEFIN POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT ABOVE ABOUT 1,000 AND FROM ABOUT 1.5 TO ABOUT 3.0 PARTS OF SULFUR MONOCHLORIDE AND HEATING SAID MIXTURE TO A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 25* C. TO ABOUT 200* C.
Claim 2
Dependent Claim
79 words
THE PROCESS OF REDUCING THE PENETRATION VALUE OF A PETROLEUM RESIDUUM TO PRODUCE AN IMPROVED ASPHALTIC MATERIAL WHICH COMPRISES PREPARING A MIXTURE OF 100 PARTS OF SAID PETROLEUM RESIDUUM, FROM ABOUT 3.5 TO ABOUT 7.5 PARTS OF A LOWER OLEFIN POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT ABOVE ABOUT 1,000 AND FROM ABOUT 1.5 TO ABOUT 3.0 PARTS OF SULFUR MONOCHLORIDE AND HEATING SAID MIXTURE TO A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 25* C. TO ABOUT 200* C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |