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Class Information
Number: 420/1
Name: Alloys or metallic compositions > Radioactive
Description: Alloys or metallic composition which is claimed as being radioactive, containing an isotope of an element of which is radioactive or containing an element of which all known isotopes are radioactive.










Sub-classes under this class:

Class Number Class Name Patents
420/2 Actinide base; singly or in combination 10
420/7 Aluminum base 6
420/4 Iron base 4
420/5 Magnesium base 2
420/6 Nickel or cobalt base 3


Patents under this class:

Patent Number Title Of Patent Date Issued
8679377 Gamma radiation source Mar. 25, 2014
7687025 Isotopic lightening Mar. 30, 2010
6875377 Gamma radiation source Apr. 5, 2005
6341377 Perspiration shield employing gel material Jan. 29, 2002
5534360 Amorphous uranium alloy and use thereof Jul. 9, 1996
4929275 Magnetic alloy compositions and permanent magnets May. 29, 1990
4814046 Process to separate transuranic elements from nuclear waste Mar. 21, 1989
4655825 Metal powder and sponge and processes for the production thereof Apr. 7, 1987
4512950 Lead alloy soft solder containing radioactive particles used to make more reliable semiconductor devices Apr. 23, 1985
4509978 Recoverable immobilization of transuranic elements in sulfate ash Apr. 9, 1985
4406697 Radioactive .sup.57 Co source Sep. 27, 1983
4380470 Ductile transplutonium metal alloys Apr. 19, 1983
4261742 Platinum group metal-containing alloys Apr. 14, 1981
4253872 Thorium doped iridium alloy for radioisotope heat sources Mar. 3, 1981
4220614 Solid solution carbide nuclear fuels Sep. 2, 1980
4216110 Method of making crack-free zirconium hydride Aug. 5, 1980
4082547 Intermetallic compounds and metal purification Apr. 4, 1978
3994718 Intermetallic compounds and metal purification Nov. 30, 1976
3963921 Method for producing uranium atomic beam source Jun. 15, 1976











 
 
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