US2419404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for higher fatty acid polyamine soaps
Assignee: Nostrip Inc
•
Filing: 1943-03-09
•
Granted: 1947-04-22
•
Expires: 1963-03-09
Abstract
No abstract record available.
Inventors
- 👤 James M Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:53
CPC Classifications
C; C11; C11C; C11C3/00; Y; Y10; Y10S; Y10S106/00; Y10S106/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1534525A
Cited
US1947951A
Cited
US2191295A
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US2139679A
Cited
US2345632A
Cited
US2291396A
Cited
US2317959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-21 | 1950-10-21 | 1951-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-21 | 1954-10-21 | 1955-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-21 | 1958-10-21 | 1959-04-22 | $7700.00 | Window Closed / Lapsed |