Patent DE862308C successfully refreshed from Google Patents.
Patent US3338813A successfully refreshed from Google Patents.
US3338813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidized asphalt blend
Assignee: Phillips Petroleum Co
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Filing: 1965-07-23
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Granted: 1967-08-29
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Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 Joe Van Pool
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:39
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR THE PRODUCTION OF ASPHALT HAVING A DUCTILITY AT 77*F. OF AT LEAST 100 CENTIMETERS AND A PENETRATION VALUE AT 77*F. IN THE RAGE OF 70 TO 85 FROM A LOW RESINOUS, HIGH WAX BASE ASPHALTIC CRUDE RESIDUE, COMPRISING MIXING WITH SAID ASPHALTIC CRUDE RESIDUE HF ACID SOLUBLE OIL CONTAINING FLUORO-HYDROCARBON COMPOUNDS AND THEREAFTER BLOWING THE MIXTURE AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO BRING THE DUCTILITY AT 77*F. UP TO AT LEAST 100 CENTIMETERS AND PENETRATION VALUES AT 77*F. WITHIN THE RANGE OF 70 TO 85.
Claim 2
Dependent Claim
91 words
A PROCESS FOR THE PRODUCTION OF ASPHALT HAVING A DUCTILITY AT 77*F. OF AT LEAST 100 CENTIMETERS AND A PENETRATION VALUE AT 77*F. IN THE RAGE OF 70 TO 85 FROM A LOW RESINOUS, HIGH WAX BASE ASPHALTIC CRUDE RESIDUE, COMPRISING MIXING WITH SAID ASPHALTIC CRUDE RESIDUE HF ACID SOLUBLE OIL CONTAINING FLUORO-HYDROCARBON COMPOUNDS AND THEREAFTER BLOWING THE MIXTURE AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO BRING THE DUCTILITY AT 77*F. UP TO AT LEAST 100 CENTIMETERS AND PENETRATION VALUES AT 77*F. WITHIN THE RANGE OF 70 TO 85.
References Cited (Backward Citations)
US2575718A
Cited
US2067264A
Cited
GB456600A
Cited
US2494867A
Cited
US2434000A
Cited
US2775530A
Cited
US2889231A
Cited
US2772316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |