US2906762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydroxyethyl polyamine compound
Assignee: Novartis Corp
•
Filing: 1954-08-13
•
Granted: 1959-09-29
•
Expires: 1974-08-13
Abstract
No abstract record available.
Inventors
- 👤 Knell Martin
- 👤 Kroll Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:58
CPC Classifications
C; C07; C07C; C07C229/00; C07C229/02; C07C229/04; C07C229/24; C07C229/76; Y; Y10; Y10S; Y10S71/00; Y10S71/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A MEMBER OF THE CLASS CONSISTING OG N,N''''-DIHYDROXYETHYL N,N'',N''''TRICARBOXYMETHYLDIETHYLENETRIAMINE, ITS WATER-SOLUBLE SALTS WITH MONOVALENT CATIONS, AND ITS WATER-SOLUBLE CHELATES WITH POLYVALENT METALS.
Claim 2
Dependent Claim
22 words
A MEMBER OF THE CLASS CONSISTING OG N,N''''-DIHYDROXYETHYL N,N'',N''''TRICARBOXYMETHYLDIETHYLENETRIAMINE, ITS WATER-SOLUBLE SALTS WITH MONOVALENT CATIONS, AND ITS WATER-SOLUBLE CHELATES WITH POLYVALENT METALS.
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |