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US3258418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of high penetration and high softening point asphalt
Assignee: Phillips Petroleum Co
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Filing: 1963-03-21
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Granted: 1966-06-28
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 Armin C Pitchford
- 👤 William N Axe
- 👤 Gene N Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:53
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PROCESS WHICH COMPRISES ADMIXING AN ASPHALT WITH A HALIDE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES OF ZINC, IRON, COPPER, COBALT, NICKEL, CADMIUM AND MERCURY IN A TEMPERATURE RANGE OF 300*F. TO 550*F. AND IN A HYDROCARBON ATMOSPHERE.
Claim 2
Dependent Claim
40 words
A PROCESS WHICH COMPRISES ADMIXING AN ASPHALT WITH A HALIDE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES OF ZINC, IRON, COPPER, COBALT, NICKEL, CADMIUM AND MERCURY IN A TEMPERATURE RANGE OF 300*F. TO 550*F. AND IN A HYDROCARBON ATMOSPHERE.
References Cited (Backward Citations)
CA506665A
Cited
US1720487A
Cited
GB397699A
Cited
US2287511A
Cited
US2247375A
Cited
US2864760A
Cited
GB827485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |