US4933471A
Expired / Lapsed
US
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Xanthene dyes
Assignee: Becton Dickinson and Co
•
Filing: 1988-08-31
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Granted: 1990-06-12
•
Expires: 2008-08-31
Abstract
Abstract Novel xanthene dyes are disclosed which excite in the range of 450-650 nm and which will emit to the red of fluoroscein. These dyes may be coupled to tagging agents, such as monoclonal antibodies, and used to detect cells in a sample.
Inventors
- 👤 Linda Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:00
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/28; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/58; G01N33/582
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
32 words
A compound having the formula ##STR3## wherein R is selected from the group consisting of COOH and SO 3 H and X is selected from the group consisting of H and Br.
Claim 2
Dependent Claim
32 words
A compound having the formula ##STR3## wherein R is selected from the group consisting of COOH and SO 3 H and X is selected from the group consisting of H and Br.
Claim 3
Dependent Claim
6 words
A compound having the formula ##STR4##
Claim 4
Dependent Claim
6 words
A compound having the formula ##STR4##
Claim 5
Dependent Claim
16 words
A compound having the formula ##STR5## wherein R is a lower alkyl having 1-3 carbon atoms.
Claim 6
Dependent Claim
16 words
A compound having the formula ##STR5## wherein R is a lower alkyl having 1-3 carbon atoms.
Claim 7
Dependent Claim
15 words
The compound of claim 3 wherein R is a lower alkyl having 1 carbon atom.
Claim 8
Dependent Claim
15 words
The compound of claim 3 wherein R is a lower alkyl having 3 carbon atoms.
References Cited (Backward Citations)
US4599307A
Cited
US4727020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |