Patent US2591506A successfully refreshed from Google Patents.
US2591506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-vinyl-thiazole
Assignee: Sprague Electric Co
•
Filing: 1948-09-11
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Granted: 1952-04-01
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Expires: 1968-09-11
Abstract
No abstract record available.
Inventors
- 👤 Lester A Brooks
- 👤 Markarian Moushy
- 👤 Nazzewski Mathew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:34
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C07D277/60; C07D277/62; C07D277/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
A 2-VINYL THIAZOLE.
Claim 2
Dependent Claim
3 words
A 2-VINYL THIAZOLE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |