Patent US3274194A successfully refreshed from Google Patents.
US3274194A
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Quinazolinedione derivatives
Assignee: Bayer Corp
•
Filing: 1963-03-29
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Granted: 1966-09-20
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Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Hayao Shin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:19
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/125; C07D295/13; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/10; C07D211/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A COMPOUND OF SELECTED FROM THE GROUP CONSISTING OF METHOSULFATE; 4-CHLOROPHENYL-1 LOWER ALKYL-1-PIPERAZINIA COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
17 words
A COMPOUND OF SELECTED FROM THE GROUP CONSISTING OF METHOSULFATE; 4-CHLOROPHENYL-1 LOWER ALKYL-1-PIPERAZINIA COMPOUND OF THE FORMULA
References Cited (Backward Citations)
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US2680741A
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US3096373A
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US3161678A
Cited
US3118930A
Cited
US3095443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |