US2838482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of sulfonating casein, zein, or soy-bean protein
Assignee: Ions Exchange and Chemical Corp
•
Filing: 1953-04-15
•
Granted: 1958-06-10
•
Expires: 1973-04-15
Abstract
No abstract record available.
Inventors
- 👤 Mendelsohn Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:50
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/08; B01J39/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2604456A
Cited
US2137927A
Cited
DE659484C
Cited
US2344267A
Cited
US2534336A
Cited
US2636851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |