Patent US4069305A successfully refreshed from Google Patents.
US4069305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
I125 Imidazole steroid derivatives
Assignee: Beckman Coulter Inc
•
Filing: 1976-05-10
•
Granted: 1978-01-17
•
Expires: 1996-05-10
Abstract
Abstract Derivatives of steroids containing an imidazole group specifically bind to the desired antibody without nonspecifically binding to other substances (e.g., proteins in a patient's plasma or serum and the surfaces of reaction vessels).
Inventors
- 👤 Alan J. Polito
- 👤 William S. Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:32
CPC Classifications
C; C07; C07J; C07J19/00; C07J19/005; C07J43/00; C07J43/003; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/58; G01N33/60; Y; Y10; Y10S; Y10S436/00; Y10S436/815; Y10S436/817
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
20 words
A radioimmunoassay reagent having a structural formula selected from a group consisting of ##STR4## wherein the asterisk (*)indicates radioactive labelling.
Claim 2
Dependent Claim
20 words
A radioimmunoassay reagent having a structural formula selected from a group consisting of ##STR4## wherein the asterisk (*)indicates radioactive labelling.
Claim 3
Dependent Claim
11 words
The radioimmunoassay reagent of claim 1 having the structural formula ##STR5##
Claim 4
Dependent Claim
14 words
The radioimmunoassay reagent of claim 2 wherein the radioactive labelling is with 125 I.
Claim 5
Dependent Claim
11 words
The radioimmunoassay reagent of claim 1 having the structural formula ##STR6##
Claim 6
Dependent Claim
14 words
The radioimmunoassay reagent of claim 4 wherein the radioactive labelling is with 125 I.
Claim 7
Dependent Claim
45 words
A radioimmunoassay method for assaying a steroid selected from a group consisting of cortisol and aldosterone, wherein the improvement comprises using in said method a radio-immunoassay reagent having a structural formula selected from a group consisting of ##STR7## wherein the asterisk (*) indicates radioactive labelling.
Claim 8
Dependent Claim
45 words
A radioimmunoassay method for assaying a steroid selected from a group consisting of cortisol and aldosterone, wherein the improvement comprises using in said method a radio-immunoassay reagent having a structural formula selected from a group consisting of ##STR7## wherein the asterisk (*) indicates radioactive labelling.
Claim 9
Dependent Claim
18 words
The radioimmunoassay method of claim 6 for assaying cortisol, wherein the radioimmunoassay reagent has the structural formula ##STR8##
Claim 10
Dependent Claim
16 words
The radioimmunoassay method of claim 7 wherein the radioimmunoassay reagent is radioactively labeled with 125 I.
Claim 11
Dependent Claim
18 words
The radioimmunoassay method of claim 6 for assaying aldosterone, wherein the radioimmunoassay reagent has the structural formula ##STR9##
Claim 12
Dependent Claim
16 words
The radioimmunoassay method of claim 9 wherein the radioimmunoassay reagent is radioactively labeled with 125 I.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |