Patent US3262934A successfully refreshed from Google Patents.
US3262934A
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Amino-substituted xanthenes and thioxanthenes
Assignee: GD Searle LLC
•
Filing: 1964-10-21
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Granted: 1966-07-26
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Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
- 👤 John W Cusic
- 👤 Yonan Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:36
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/02; C07D405/12; C07D311/00; C07D311/02; C07D311/78; C07D311/80; C07D311/82; C07D311/84; C07D311/88; C07D311/90; C07D335/00; C07D335/04; C07D335/10; C07D335/12; C07D335/14; C07D335/18; C07D335/20; C07D409/00; C07D409/02; C07D409/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US3157658A
Cited
US3159636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |