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Patent US3970583A successfully refreshed from Google Patents.
US3970583A
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Isotope generator provided with a carrier material which in addition to Al2 O3 contains fully or partly hydrated MnO2
Assignee: US Philips Corp
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Filing: 1974-02-14
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Granted: 1976-07-20
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Expires: 1994-02-14
Abstract
Abstract The invention relates to an isotope generator for the production of liquids containing 99 m Tc wherein the adsorbent used in the generator contains Al 2 O 3 and at least partially hydrated manganese dioxide.
Inventors
- 👤 Helena Panek-Finda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:54
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; G21G4/06; G21G4/08; G21G1/00; G21G1/0005; Y; Y10; Y10S; Y10S422/00; Y10S422/903
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
In an isotope generator for the production of liquids containing 99 mTc which generator is provided with a reservoir having an inlet opening and an outlet opening and a parent isotope 99 mMo in the form of a molybdate on a carrier material located in said reservoir the improvement wherein the carrier material contains Al 2 O 3 and at least partially hydrated manganese dioxide.
Claim 2
Dependent Claim
65 words
In an isotope generator for the production of liquids containing 99 mTc which generator is provided with a reservoir having an inlet opening and an outlet opening and a parent isotope 99 mMo in the form of a molybdate on a carrier material located in said reservoir the improvement wherein the carrier material contains Al 2 O 3 and at least partially hydrated manganese dioxide.
Claim 3
Dependent Claim
38 words
The isotope generator of claim 1 wherein the carrier material is in the form of Al 2 O 3 particles at least a fraction of which is at least partially coated with at least partially hydrated manganese dioxide.
Claim 4
Dependent Claim
34 words
The isotope generator of claim 2 wherein for each gram of Al 2 O 3 from 1.5 to 4 mgs of manganese in the form of at least partially hydrated manganese dioxide is present.
Claim 5
Dependent Claim
101 words
In an isotope generator for the production of liquids containing 99 mTc which generator is provided with an inlet opening and an outlet opening and a parent isotope 99 mMo in the form of a molybdate on a carrier material located in said reservoir the improvement wherein the carrier material consists of an upper layer at the side of the inlet opening containing Al 2 O 3 particles at least partially coated with a layer of at least partially hydrated manganese dioxide and a lower layer situated at the side of the outlet opening consisting of Al 2 O 3 particles.
Claim 6
Dependent Claim
101 words
In an isotope generator for the production of liquids containing 99 mTc which generator is provided with an inlet opening and an outlet opening and a parent isotope 99 mMo in the form of a molybdate on a carrier material located in said reservoir the improvement wherein the carrier material consists of an upper layer at the side of the inlet opening containing Al 2 O 3 particles at least partially coated with a layer of at least partially hydrated manganese dioxide and a lower layer situated at the side of the outlet opening consisting of Al 2 O 3 particles.
Claim 7
Dependent Claim
20 words
The isotope generator of claim 4 wherein 30-60% by weight of the carrier material is present in the upper layer.
Claim 8
Dependent Claim
43 words
The isotope generator of claim 4 wherein in the upper layer of the carrier material for each gram of Al 2 O 3 there is present from 1.5 to 4 mg of manganese in the form of at least partially hydrated manganese dioxide.
Claim 9
Dependent Claim
34 words
The isotope generator of claim 6 wherein for each gram of Al 2 O 3 from 2.2 to 3 mg of manganese in the form of at least partially hydrated manganese dioxide is present.
Claim 10
Dependent Claim
52 words
The isotope generator of claim 4 wherein the reservoir is in the form of an open-ended cylindrical body the openings of which are closed by pierceable rubber stoppers and the carrier material in the reservoir is enclosed between filters located at the top and bottom of the carrier material in the reservoir.
References Cited (Backward Citations)
US3785990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |