US2928856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy metal-diamine complex
Assignee: Armour and Co
•
Filing: 1956-07-13
•
Granted: 1960-03-15
•
Expires: 1976-07-13
Abstract
No abstract record available.
Inventors
- 👤 Harwood James
- 👤 Richard A Reck
- 👤 Walter W Abramitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:24
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
AS A COMPOSITION OF MATTER, A COMPLEX OF 1 MOLE OF A HEAVY METAL SALT AND 2 MOLES OF A DIAMINE MONOHYDROHALIDE, THE DIAMINE IN SAID DIAMINE MONOHYDROHALIDE HAVING THE FORMULA NH2-(CH2)N-NHR, WHEREIN R IS AN ALIPHATIC HYDROCARBON RADICAL HAVING FROM 8 TO 20 CARBON ATOMS AND N IS AN INTEGER OF FROM 2 TO 5.
Claim 2
Dependent Claim
56 words
AS A COMPOSITION OF MATTER, A COMPLEX OF 1 MOLE OF A HEAVY METAL SALT AND 2 MOLES OF A DIAMINE MONOHYDROHALIDE, THE DIAMINE IN SAID DIAMINE MONOHYDROHALIDE HAVING THE FORMULA NH2-(CH2)N-NHR, WHEREIN R IS AN ALIPHATIC HYDROCARBON RADICAL HAVING FROM 8 TO 20 CARBON ATOMS AND N IS AN INTEGER OF FROM 2 TO 5.
References Cited (Backward Citations)
US930836A
Cited
US2686798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |