Patent US3674900A successfully refreshed from Google Patents.
US3674900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactive macroaggregates of serum albumin
Assignee: LLOYD M THOMPSON
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Filing: 1967-01-03
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Granted: 1972-07-04
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Expires: 1987-01-03
Abstract
Abstract Human serum albumin is made radioactive, denatured, and then agglutinated to form macroaggregates of a nearly uniform size. This latter is achieved by the use of weak organic acids. Their uniform size makes them more suitable for scintiscanning.
Inventors
- 👤 Lloyd M Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:27
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/12; A61K51/1217; A61K51/02; A61K51/04; A61K51/08; A61K51/081; A61K51/1241; A61K51/1255; A61K2123/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
The method of claim 1 wherein the acid is acetic acid.
Claim 2
Dependent Claim
11 words
The method of claim 1 wherein the acid is citric acid.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein the acid is lactic acid.
Claim 4
Dependent Claim
47 words
An injectable pharmaceutical preparation comprising a suspension in physiological saline solution of radioactive macroaggregates of human serum albumin, which in siZe are substantially 100 percent in the 5-30 Mu range and containing 100-300 microcuries per 10 ml., said macroaggregates being prepared by the process of claim 1.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |