US2537633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2, 5-disubstituted-tetrahydro-1, 2, 5-thiadiazines and methods of preparing same
Assignee: Bridgestone Firestone Inc
•
Filing: 1949-03-30
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Granted: 1951-01-09
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Expires: 1969-03-30
Abstract
No abstract record available.
Inventors
- 👤 Jr George E P Smith
- 👤 James A Shotton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:00
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/15; C07D285/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUND OF THE FOLLOWING FORMULA
Claim 2
Dependent Claim
5 words
COMPOUND OF THE FOLLOWING 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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |