US4299833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-Isopropyl- and 1-isobutyl-3,7-dimethyl xanthine as medicaments
Assignee: Nestec SA
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Filing: 1980-05-08
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Granted: 1981-11-10
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Expires: 2000-05-08
Abstract
Abstract The invention relates to 1-isopropyl- and 1-isobutyl-3,7-dimethyl xanthines as medicaments. They have a sedative effect comparable with that of a standard neuroleptic.
Inventors
- 👤 Georges Philippossian
- 👤 Marc Enslen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:45
CPC Classifications
C; C07; C07D; C07D473/00; C07D473/02; C07D473/04; C07D473/06; A; A61; A61P; A61P25/00; A61P25/02; A61P25/20; A61P25/26; A61P7/00; A61P7/10; C07D473/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
23 words
A pharmaceutical composition containing an effective quantity of 1-isopropyl-3,7-dimethyl xanthine in combination with an inert pharmaceutically acceptable carrier to produce a neuroleptic effect.
Claim 2
Dependent Claim
23 words
A pharmaceutical composition containing an effective quantity of 1-isopropyl-3,7-dimethyl xanthine in combination with an inert pharmaceutically acceptable carrier to produce a neuroleptic effect.
Claim 3
Dependent Claim
23 words
A pharmaceutical composition containing an effective quantity of 1-isobutyl-3,7-dimethyl xanthine in combination with an inert pharmaceutically acceptable carrier to produce a neuroleptic effect.
Claim 4
Dependent Claim
23 words
A pharmaceutical composition containing an effective quantity of 1-isobutyl-3,7-dimethyl xanthine in combination with an inert pharmaceutically acceptable carrier to produce a neuroleptic effect.
References Cited (Backward Citations)
CH4780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |