US2528378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal salts of substituted quaternary hydroxy cycloimidinic acid metal alcoholates and process for preparation of same
Assignee: JOHN J MCCABE JR
•
Filing: 1947-09-20
•
Granted: 1950-10-31
•
Expires: 1967-09-20
Abstract
No abstract record available.
Inventors
- 👤 Hans S Mannheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:14
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/47; D06M13/473; C; C07; C07D; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A NOVEL COMPOUND OF THE FOLLOWING FORMULA,
Claim 2
Dependent Claim
7 words
A NOVEL COMPOUND OF THE FOLLOWING FORMULA,
References Cited (Backward Citations)
US2268273A
Cited
US2267965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |