US2153445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing starch pastes
Assignee: Rohm and Haas Co
•
Filing: 1936-04-21
•
Granted: 1939-04-04
•
Expires: 1956-04-21
Abstract
No abstract record available.
Inventors
- 👤 John J Willaman
- 👤 Robert A Diehm
- 👤 Edward W Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:11
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/14; Y; Y10; Y10S; Y10S435/00; Y10S435/818
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) | 1942-04-03 | 1942-10-03 | 1943-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-03 | 1946-10-03 | 1947-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-03 | 1950-10-03 | 1951-04-04 | $7700.00 | Window Closed / Lapsed |