Patent US2540025A successfully refreshed from Google Patents.
US3480689A
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Cracking of hydrocarbons
Assignee: Sunoco Inc
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Filing: 1967-05-10
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Granted: 1969-11-25
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Expires: 1987-05-10
Abstract
No abstract record available.
Inventors
- 👤 Byron B Bohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:56
CPC Classifications
C; C23; C23F; C23F14/00; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; B01J19/0026; B01J6/00; B01J6/008; C10; C10G; C10G2400/00; C10G2400/20; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/926; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 0
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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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |