US2435402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of motor fuels
Assignee: Shell Development Co
•
Filing: 1938-12-14
•
Granted: 1948-02-03
•
Expires: 1958-12-14
Abstract
No abstract record available.
Inventors
- 👤 Sumner H Mcallister
- 👤 Edwin F Bullard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:11
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2/86; C07C2/861; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US376688A
Cited
US2001910A
Cited
FR824329A
Cited
GB479345A
Cited
US2161392A
Cited
US2211747A
Cited
US2169809A
Cited
US2396486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |