US2308640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lipophilic substance
Assignee: Individual
•
Filing: 1939-08-17
•
Granted: 1943-01-19
•
Expires: 1959-08-17
Abstract
No abstract record available.
Inventors
- 👤 Bergmann Ernst
- 👤 Haskelberg Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/48; C07; C07F; C07F9/00; C07F9/66; C07F9/70; C07F9/74; C09B43/00; C09B43/12; C09B43/124; C09B43/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-18 | 1946-07-20 | 1947-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-18 | 1950-07-20 | 1951-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-18 | 1954-07-20 | 1955-01-19 | $7700.00 | Window Closed / Lapsed |