Patent US1893441A successfully refreshed from Google Patents.
Patent US2440477A successfully refreshed from Google Patents.
US2440477A
Expired / Lapsed
US
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Synthetic drying oils
Assignee: —
•
Filing: —
•
Granted: 1948-04-27
•
Expires: 1965-04-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:26
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C10; C10G; C10G2400/00; C10G2400/10; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2253323A
Cited
US1885060A
Cited
US2217919A
Cited
US2076581A
Cited
US2166502A
Cited
US2371652A
Cited
US2320629A
Cited
US2375675A
Cited
US2342677A
Cited
US2371341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |