Patent US3155669A successfully refreshed from Google Patents.
US3155669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2, 4, 8-triaza-spiro (4, 5) dec-2-enes
Assignee: Research Laboratorium C Janssen NV
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Filing: 1962-06-22
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Granted: 1964-11-03
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Janssen Paul Adriaan Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:20
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE COMPOUND 1 - OXO-3-R1-4-R2-8-R3-2,4,8-TRIAZASPIRO(4,5)DEC-2-ENE WHERE R1 IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL R2 IS A MEMBER OF THE GROUP CONSISTING OF PHENYL, LOWER ALKYL, CYCLOPENTYL AND CYCLOHEXYL AND R3 IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND BENZYL.
Claim 2
Dependent Claim
47 words
THE COMPOUND 1 - OXO-3-R1-4-R2-8-R3-2,4,8-TRIAZASPIRO(4,5)DEC-2-ENE WHERE R1 IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL R2 IS A MEMBER OF THE GROUP CONSISTING OF PHENYL, LOWER ALKYL, CYCLOPENTYL AND CYCLOHEXYL AND R3 IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND BENZYL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |