US2422646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous emulsions and a process of preparing them
Assignee: Individual
•
Filing: 1939-01-14
•
Granted: 1947-06-17
•
Expires: 1959-01-14
Abstract
No abstract record available.
Inventors
- 👤 Starck Werner
- 👤 Freudenberger Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:18
CPC Classifications
C; C09; C09K; C09K23/00; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C09K23/38; Y; Y10; Y10S; Y10S526/00; Y10S526/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |