US4071522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tritiated O-benzoylecgonine
Assignee: Hoffmann La Roche Inc
•
Filing: 1977-01-06
•
Granted: 1978-01-31
•
Expires: 1997-01-06
Abstract
Abstract The present disclosure relates to tritiated labeled benzoylecgonines. The labeled benzoylecgonines described herein are useful in immunoassays for benzoylecgonine, a metabolite of cocaine.
Inventors
- 👤 James Gordon Christenson
- 👤 Richard R. Muccino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:34
CPC Classifications
C; C07; C07D; C07D451/00; C07D451/02; C07D451/04; C07D451/06; C07D451/12; Y; Y10; Y10S; Y10S436/00; Y10S436/815; Y10S436/816
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
1 words
O-(o-iodobenzoyl)ecgonine
Claim 2
Dependent Claim
1 words
O-(o-iodobenzoyl)ecgonine
Claim 3
Dependent Claim
10 words
O-benzoylecgonine- 3 H having a specific activity greater than 1mCi/mg.
Claim 4
Dependent Claim
10 words
O-benzoylecgonine- 3 H having a specific activity greater than 1mCi/mg.
Claim 5
Dependent Claim
15 words
The O-benzoylecgonine- 3 H of claim 2 having a specific activity of about 20.8 mCi/mg.
References Cited (Backward Citations)
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Cited
US3498989A
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US3966744A
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US3709868A
Cited
US3888866A
Cited
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Cited
US3952091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |