US3884898A
Expired / Lapsed
US
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Normorphine derivatives bonded to proteins
Assignee: Syva Co
•
Filing: 1972-08-18
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Granted: 1975-05-20
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Expires: 1992-08-18
Abstract
Abstract Normorphine derivatives are provided for preparing compounds for use in immunoassays and for preparing antibodies to morphine. Carboxy functionalities or analogs thereof are bonded through an aliphatic chain to the nitrogen of the normorphine molecule. Accurate and selective immunoassays are obtained by employing derivatives having detector groups with the antibodies prepared to the normorphine derivatives.
Inventors
- 👤 Richard S Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/94; G01N33/9486; Y; Y10; Y10S; Y10S435/00; Y10S435/961; Y10S436/00; Y10S436/815; Y10S436/816; Y10S436/823; Y10S436/826; Y10S530/00; Y10S530/806
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
6 words
A NORMORPHINE DERIVATIVE OF THE FORMULA:
Claim 2
Dependent Claim
6 words
A NORMORPHINE DERIVATIVE OF THE FORMULA:
Claim 3
Dependent Claim
29 words
A normorphine derivative according to claim 1, wherein n'' is at least one and in the range of the molecular weight of Y'' divided by from 1,500 to 50,000.
Claim 4
Dependent Claim
22 words
A normorphine derivative according to claim 1, wherein R4 is alkylene of from 1-4 carbon atoms; and R5 and R6 are hydrogen.
Claim 5
Dependent Claim
5 words
A compound of the formula:
Claim 6
Dependent Claim
5 words
A compound of the formula:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |