US2316258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of softening agents
Assignee: Individual
•
Filing: 1940-02-24
•
Granted: 1943-04-13
•
Expires: 1960-02-24
Abstract
No abstract record available.
Inventors
- 👤 Kummel Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:07
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/184; D06M13/207; D06M13/21; C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; D06M13/192; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/06; D21H17/14; D21H17/20; D21H17/33; D21H17/46; D21H17/53
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) | 1946-04-12 | 1946-10-12 | 1947-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-12 | 1950-10-12 | 1951-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-12 | 1954-10-12 | 1955-04-13 | $7700.00 | Window Closed / Lapsed |