US2459903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst gels
Assignee: Standard Oil Co
•
Filing: 1944-07-22
•
Granted: 1949-01-25
•
Expires: 1964-07-22
Abstract
No abstract record available.
Inventors
- 👤 Voorhees Vanderveer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:28
CPC Classifications
B; B01; B01J; B01J21/00; B01J13/00; F; F26; F26B; F26B5/00; F26B5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB100392A
Cited
US1755496A
Cited
US2138048A
Cited
US2232727A
Cited
US2284248A
Cited
US2390556A
Cited
US2387596A
Cited
US2384946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |