Patent US2610190A successfully refreshed from Google Patents.
US2610190A
Expired / Lapsed
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Preparation of benzothiazole through pyrolysis
Assignee: Wyeth Holdings LLC
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Filing: 1949-03-12
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Granted: 1952-09-09
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Expires: 1969-03-12
Abstract
No abstract record available.
Inventors
- 👤 Chao Tsai Hsiang
- 👤 Wharton Edward Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:45
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
THE PROCESS OF PREPARING BENZOTHIAZOLE WHICH COMPRISES THE STEPS OF SUBJECTING A MEMBER OF THE GROUP CONSISTING OF 2-MERCAPTOBENZOTHIAZOLE OF THE FORMULA
Claim 2
Dependent Claim
22 words
THE PROCESS OF PREPARING BENZOTHIAZOLE WHICH COMPRISES THE STEPS OF SUBJECTING A MEMBER OF THE GROUP CONSISTING OF 2-MERCAPTOBENZOTHIAZOLE OF THE FORMULA
References Cited (Backward Citations)
US2263014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |