US2431652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulphur-containing phosphatide, lubricant, and method of making
Assignee: American Lecithin Co Inc
•
Filing: 1943-09-03
•
Granted: 1947-11-25
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Expires: 1963-09-03
Abstract
No abstract record available.
Inventors
- 👤 Trueger Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:31
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/10; C07F9/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2079973A
Cited
GB442212A
Cited
US2201535A
Cited
US2221162A
Cited
US2216711A
Cited
US2339371A
Cited
US2363133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |