Patent US2776987A successfully refreshed from Google Patents.
US2776987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal salts of sulfo-nu-carbamylsuccinamic acid esters
Assignee: Uniroyal Inc
•
Filing: 1954-03-10
•
Granted: 1957-01-08
•
Expires: 1974-03-10
Abstract
No abstract record available.
Inventors
- 👤 Pliny O Tawney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:41
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A METAL SALT OF A SULFO-N-CARBAMYLSUCCINAMIC ESTER OF A NON-TERTIARY ALCOHOL, IN WHICH THE METAL IS FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE-EARTH METALS, HAVING AN ATOMIC NUMBER LESS THAN 56.
Claim 2
Dependent Claim
33 words
A METAL SALT OF A SULFO-N-CARBAMYLSUCCINAMIC ESTER OF A NON-TERTIARY ALCOHOL, IN WHICH THE METAL IS FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE-EARTH METALS, HAVING AN ATOMIC NUMBER LESS THAN 56.
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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |