US3501547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation
Assignee: Phillips Petroleum Co
•
Filing: 1967-05-19
•
Granted: 1970-03-17
•
Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 George J Nolan
- 👤 Robert J Hogan
- 👤 Floyd Farha Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:13
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1815; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2991321A
Cited
US3269957A
Cited
US3161670A
Cited
US3274283A
Cited
US3248340A
Cited
US3320329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |