US3839341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 1,3,8-triazaspiro(4.5)decanes
Assignee: FMC Corp
•
Filing: 1966-06-13
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Granted: 1974-10-01
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Expires: 1986-06-13
Abstract
Abstract 1. A 1,3,8-TRIAZASPIRO (4.5)DECANE OF THE FORMULA: 1-(C6H5-),3-R,4-(O=),8-(X-PHENYLENE-C(-O-R1)(-O-R2)- (CH2)3-)-1,3,8-TRIAZASPIRO(4.5)DECANE AND THE ACID ADDITION SALTS THEREOF WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, LOWER ALKENYL AND LOWER ALKYL 1 TO 4 CARBON ATOMS, X IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND FLUORINE AND R1 AND R2 EACH REPRESENT A LOWER ALKYL AS ABOVE GIVEN FOR R, WHILE TAKEN TOGETHER R1 AND R2 REPRESENT THE NUMBER OF CARBON ATOMS TO COMPLETE A DIOXOLANE RING OR A DIOXANE RING.
Inventors
- 👤 W Scharpf
- 👤 H Stange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:11
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A 1,3,8-TRIAZASPIRO (4.5)DECANE OF THE FORMULA:
Claim 2
Dependent Claim
6 words
A 1,3,8-TRIAZASPIRO (4.5)DECANE OF THE FORMULA:
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |