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Patent US3201404A successfully refreshed from Google Patents.
US3201404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-phenyl-2-loweralkyl and phenylloweralkyl-4-tertiary amino-3, 5-dioxo-1, 2, 4-triazolidines
Assignee: Hoechst AG
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Filing: 1962-07-24
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Granted: 1965-08-17
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Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Ruschig Heinrich
- 👤 Schmitt Karl
- 👤 Vogel Gerbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:17
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASICALLY SUBSTITUTED TRIAZOLIDINES OF THE FORMULA
Claim 2
Dependent Claim
14 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASICALLY SUBSTITUTED TRIAZOLIDINES OF THE FORMULA
Claim 3
Dependent Claim
2 words
THE 1-PHENYL-2-METHYL-4-(B-PIPERIDINO-ETHYL)-3,5DIOXO-1,2,4-TRIAZOLIDINE.
Claim 4
Dependent Claim
2 words
THE 1-PHENYL-2-METHYL-4-(B-PIPERIDINO-ETHYL)-3,5DIOXO-1,2,4-TRIAZOLIDINE.
References Cited (Backward Citations)
US2899359A
Cited
US1915334A
Cited
US2075359A
Cited
US2470085A
Cited
US2890984A
Cited
GB883219A
Cited
US3000885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |