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US4693884A
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Technetium-99m triphosphonates and tetraphosphonates for the scintigraphic visualization of res-containing organs and lymph vessels, and a process for their preparation
Assignee: CIS Bio International SA
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Filing: 1983-10-07
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Granted: 1987-09-15
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Expires: 2003-10-07
Abstract
Abstract A diagnostic agent for the visualization of RES-containing organs or of lymph vessels, containing 99mTc triphosphonates or tetraphosphonates in physiologic saline, and a process for their preparation.
Inventors
- 👤 Hans-Jerg Kleiner
- 👤 Gerhard Kloss
- 👤 Michael Molter
- 👤 Alexander Schwarz
- 👤 Horst-Dieter Thamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:10
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/02; A61K51/04; A61K51/0474; A61K51/0478; A61K51/0489; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3839; C07F9/3843; C07F9/3869; A61K2123/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
49 words
A diagnostic agent for the visualization of RES-containing organs and the lymph vessels, which contains one or more compounds labeled with technetium-99m selected from the group consisting of 2,4,4-triphosphonobutyric acid (TPB), ethane-1,1,2,2-tetraphosphonic acid (ETP), propane-1,1,3,3-tetraphosphonic acid (PTP) and butane-1,1,4,4-tetraphosphonic acid (BTP) or a suitable salt thereof in physiologic saline.
Claim 2
Dependent Claim
49 words
A diagnostic agent for the visualization of RES-containing organs and the lymph vessels, which contains one or more compounds labeled with technetium-99m selected from the group consisting of 2,4,4-triphosphonobutyric acid (TPB), ethane-1,1,2,2-tetraphosphonic acid (ETP), propane-1,1,3,3-tetraphosphonic acid (PTP) and butane-1,1,4,4-tetraphosphonic acid (BTP) or a suitable salt thereof in physiologic saline.
Claim 3
Dependent Claim
13 words
The diagnostic agent as claimed in claim 1, which additionally contains Ca ions.
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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) | 1990-09-14 | 1991-03-16 | 1991-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-14 | 1995-03-16 | 1995-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-14 | 1999-03-16 | 1999-09-15 | $7700.00 | Window Closed / Lapsed |