US4608252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chloramphenicol derivatives antigens and antibodies
Assignee: Siemens Healthcare Diagnostics GmbH Germany
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Filing: 1985-09-27
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Granted: 1986-08-26
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Expires: 2005-09-27
Abstract
Abstract Chloramphenicol derivatives are provided for use in the preparing of antigen conjugates for the production of antibodies specifically for chloramphenicol. Specifically, the aryl amino group is derivatized to introduce a non-oxo-carbonyl group which is used for amide formation with an antigen. The conjugate is then injected into a vertebrate for production of antisera which is isolated in conventional ways and find particular use in competitive protein binding assays.
Inventors
- 👤 Pyare Khanna
- 👤 Evan S. Snyder
- 👤 Prithipal Singh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/94; G01N33/9446; Y; Y10; Y10S; Y10S435/00; Y10S435/961
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
Antibodies prepared in response to an antigen of the formula: ##STR4## wherein: R is a saturated aliphatic linking group of from 2 to 6 carbon atoms having from 0 to 1 oxo-carboxyl groups at its terminus bonded to nitrogen; Y 1 is a poly(amino acid); and n 1 is one to the molecular weight of Y 1 divided by 2000.
Claim 2
Dependent Claim
60 words
Antibodies prepared in response to an antigen of the formula: ##STR4## wherein: R is a saturated aliphatic linking group of from 2 to 6 carbon atoms having from 0 to 1 oxo-carboxyl groups at its terminus bonded to nitrogen; Y 1 is a poly(amino acid); and n 1 is one to the molecular weight of Y 1 divided by 2000.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |