US2500142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thio-ether substituted thiazoles and selenazoles and process of preparing the same
Assignee: GAF Chemicals Corp
•
Filing: 1947-04-24
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Granted: 1950-03-07
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Expires: 1967-04-24
Abstract
No abstract record available.
Inventors
- 👤 Gustav A Wiesehahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:02
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/34; C07D277/36; C07D277/54; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C07D417/00; C07D417/02; C07D417/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2423709A
Cited
CH204691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |