Patent US2661355A successfully refreshed from Google Patents.
US2661355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbomethoxybenzazide and preparation
Assignee: EIDP Inc
•
Filing: 1952-10-21
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Granted: 1953-12-01
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Expires: 1972-10-21
Abstract
No abstract record available.
Inventors
- 👤 Mack F Fuller
- 👤 Paul Van Fossen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:31
CPC Classifications
C; C07; C07C; C07C247/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A NEW CHEMICAL COMPOUND, P-CARBOMETHOXY BENZAZIDE.
Claim 2
Dependent Claim
6 words
A NEW CHEMICAL COMPOUND, P-CARBOMETHOXY BENZAZIDE.
References Cited (Backward Citations)
US2340757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |