US2990246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of caking of common salt
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1959-11-23
•
Granted: 1961-06-27
•
Expires: 1979-11-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Scott
- 👤 Norman G Bromby
- 👤 Allday Coningsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PROCESS FOR REDUCING THE TENDENCY OF COMMON SALT (SODIUM CHLORIDE) TO CAKE CHARACTERISED IN THAT TO THE SOLID GRANULAR SALT IS ADDED A SMALL QUANTITY OF NITRILOTRIACETAMIDE HAVING THE FORMULA N(CH2CONH2)3.
Claim 2
Dependent Claim
32 words
A PROCESS FOR REDUCING THE TENDENCY OF COMMON SALT (SODIUM CHLORIDE) TO CAKE CHARACTERISED IN THAT TO THE SOLID GRANULAR SALT IS ADDED A SMALL QUANTITY OF NITRILOTRIACETAMIDE HAVING THE FORMULA N(CH2CONH2)3.
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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |