US4115541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone-seeking technetium-99m complex
Assignee: Research Corp
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Filing: 1975-03-26
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Granted: 1978-09-19
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Expires: 1995-03-26
Abstract
Abstract A bone-seeking, technetium-99m-tin-phosphonate complex effective as a skeletal-imaging agent has been found particularly useful for diagnostic purposes. Skeletal tissue concentrations of technetium-99m obtained with the complex compare favorably to other bone-seeking radionuclides.
Inventors
- 👤 Gopal Subramanian
- 👤 John Gilmore McAfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:53
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/02; A61K51/04; A61K51/0489; A61K2123/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
A method for skeletal-imaging which includes the intravenous administration of a solution adapted for intravenous administration containing a technetium-99m-tin-phosphonate complex wherein said phosphonate is methylene diphosphonate or 1-aminoethane-1,1-diphosphonate.
Claim 2
Independent Claim
28 words
A method for skeletal-imaging which includes the intravenous administration of a solution adapted for intravenous administration containing a technetium-99m-tin-phosphonate complex wherein said phosphonate is methylene diphosphonate or 1-aminoethane-1,1-diphosphonate.
Claim 3
Dependent Claim
11 words
A method according to claim 1 wherein said phosphonate is methylene-diphosphonate.
Claim 4
Dependent Claim
11 words
A method according to claim 1 wherein said phosphonate is 1-amino-ethane-1,1-diphosphonate.
References Cited (Backward Citations)
US3735001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |