US2834782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monocalcium monopiperazine salt of ethylenediaminetetracetic acid
Assignee: ENDO LAB
•
Filing: 1955-07-14
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Granted: 1958-05-13
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Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Schlesinger Albert
- 👤 Heights Jackson
- 👤 Schoen Karl
- 👤 Gardens Kew
- 👤 Samuel M Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:54
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
AS A NEW COMPOSITION, THE MONOCALCIUM MONOPIPERAZINE SALT OF ETHYLENEDIAMINETETRAACETIC ACID HAVING THE FORMULA C14H24N4O8CA.2H2O.
Claim 2
Dependent Claim
15 words
AS A NEW COMPOSITION, THE MONOCALCIUM MONOPIPERAZINE SALT OF ETHYLENEDIAMINETETRAACETIC ACID HAVING THE FORMULA C14H24N4O8CA.2H2O.
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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |