US2443607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heptane isomerization
Assignee: Standard Oil Co
•
Filing: 1943-03-31
•
Granted: 1948-06-22
•
Expires: 1963-03-31
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Evering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2786; C07C5/2789
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
NL52359C
Cited
US2265870A
Cited
US2266012A
Cited
US2317142A
Cited
US2299716A
Cited
US2331429A
Cited
US2300249A
Cited
US2350834A
Cited
US2402807A
Cited
US2373674A
Cited
US2336863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |