US2624729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic compounds containing sulfur and nitrogen in the ring
Assignee: Rohm and Haas Co
•
Filing: 1950-12-01
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Granted: 1953-01-06
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Expires: 1970-12-01
Abstract
No abstract record available.
Inventors
- 👤 Melamed Sidney
- 👤 Willard J Croxall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:36
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/15; C07D285/01; C07D285/02; C07D285/04; C07D285/10; C07D285/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
AS NEW CHEMICAL SUBSTANCES, COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
8 words
AS NEW CHEMICAL SUBSTANCES, COMPOUNDS OF THE FORMULA
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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |