US2724720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dicarbamates of substituted propane diols
Assignee: Carter Products Inc
•
Filing: 1953-08-03
•
Granted: 1955-11-22
•
Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Frank M Berger
- 👤 Bernard J Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:24
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
THE 2,2-DISUBSTITUTED 1,3-PROPANEDIOL DICARBAMATES OF THE GROUP CONSISTING OF 2-METHYL-2-ISOPROPYL-1,3-PROPANEDIOL DICARBAMATE, 2-ETHYL 2 PHENYL 1.3 PROPANEDIOL DICARBAMATE, AND 2-METHYL-2-N-PROPYL-1,3-PROPANEDIOL DICARBAMATE.
Claim 2
Dependent Claim
20 words
THE 2,2-DISUBSTITUTED 1,3-PROPANEDIOL DICARBAMATES OF THE GROUP CONSISTING OF 2-METHYL-2-ISOPROPYL-1,3-PROPANEDIOL DICARBAMATE, 2-ETHYL 2 PHENYL 1.3 PROPANEDIOL DICARBAMATE, AND 2-METHYL-2-N-PROPYL-1,3-PROPANEDIOL DICARBAMATE.
References Cited (Backward Citations)
GB614295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |