US3888864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino lower alkyl ether derivatives of opium alkaloids
Assignee: F Hoffmann La Roche AG
•
Filing: 1973-06-29
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Granted: 1975-06-10
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Expires: 1993-06-29
Abstract
Abstract Amino lower alkyl ethers of the phenolic hydroxyl group of opium alkaloids are linked via a peptide linkage to carboxylated latex polymers to form reagents which are useful in a sensitive diagnostic test to detect the presence of opium alkaloids in body fluids.
Inventors
- 👤 Jr Roy Cleeland
- 👤 Hans Jacob Hager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:03
CPC Classifications
C; C07; C07D; C07D489/00; C07D489/02; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/94; G01N33/9486
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
AN AMINO LOWER ALKYL ETHER OF THE PHENOLIC HYDROXYL GROUP OF MORPHINE, HEROIN AND CODEINE WHEREIN THE LOWER ALKYL HAS TWO TO EIGHT CARBON ATOMS.
Claim 2
Dependent Claim
25 words
AN AMINO LOWER ALKYL ETHER OF THE PHENOLIC HYDROXYL GROUP OF MORPHINE, HEROIN AND CODEINE WHEREIN THE LOWER ALKYL HAS TWO TO EIGHT CARBON ATOMS.
Claim 3
Dependent Claim
9 words
The compound of claim 1 which is 3-0-(3-aminopropyl) morphine.
Claim 4
Dependent Claim
9 words
The compound of claim 1 which is 3-0-(4-aminobutyl) morphine.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |