Patent US3198798A successfully refreshed from Google Patents.
US3198798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalimido- and isoindolinyl-alkylpiperazines and their preparation
Assignee: STWB Inc
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Filing: 1962-11-02
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Granted: 1965-08-03
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Expires: 1982-11-02
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Zenitz
- 👤 Lewis P Albro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:05
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D409/00; C07D409/02; C07D409/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
1-CARBO-LOWER-ALKOXYL-4-((2-PHTHALIMIEO)A)PIPERAZINE, WHEREIN A IS ALKYLENE OF FROM TWO TO TEN CARBON ATOMS.
Claim 2
Dependent Claim
12 words
1-CARBO-LOWER-ALKOXYL-4-((2-PHTHALIMIEO)A)PIPERAZINE, WHEREIN A IS ALKYLENE OF FROM TWO TO TEN CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |