US2864875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroisomerization
Assignee: Gulf Research and Development Co
•
Filing: 1952-03-18
•
Granted: 1958-12-16
•
Expires: 1972-03-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Mckinley
- 👤 William A Horne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:09
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C07C5/32; C07C5/373; C07C5/387; C10; C10G; C10G2400/00; C10G2400/02; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2433603A
Cited
US2399927A
Cited
US2424636A
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US2487563A
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US2598642A
Cited
US2661383A
Cited
US2718535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |