US Patent Class 976
NUCLEAR TECHNOLOGY-- Main Headings




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Current as of: June, 1999
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CLASS NOTES
DIG 1  DF  ALLEGED CONTROLLED FUSION REACTORS (G21B-1/00) ** (uncontrolled reactors DIG. 423; arrangements for heating or confining plasma H05H-1/02) {3}
DIG 5  DF  NUCLEAR REACTORS [G21C-1/00] *** (fusion reactors H05H-1/00; nuclear explosives DIG. 423; analogue computers therefor G06G-7/54) {4}
DIG 37  DF  REACTOR FUEL ELEMENTS AND THEIR ASSEMBLIES; SELECTION OF SUBSTANCES FOR USE AS REACTOR FUEL ELEMENTS [G21C-3/00] {5}
DIG 99  DF  MODERATOR OR CORE STRUCTURE; SELECTION OF MATERIALS FOR USE AS MODERATOR [G21C-5/00] {4}
DIG 113  DF  CONTROL OF NUCLEAR REACTION [G21C-7/00] {9}
DIG 139  DF  EMERGENCY PROTECTION ARRANGEMENTS STRUCTALLY ASSOCIATED WITH THE REACTOR (e.g., safety valves provided with pressure equalization devices) [G21C-9/00] *** (emergency cooling arrangements DIG. 196) {6}
DIG 152  DF  SHEILDING STRUCTURALLY ASSOCIATED WITH THE REACTOR [G21C-11/00] {3}
DIG 166  DF  PRESSURE VESSELS; CONTAINMENT VESSELS [G21C-13/00] *** (chemical or physical processes B01J-3/00; pressure vessels in general F16J-12/00) {3}
DIG 187  DF  COOLING ARRANGEMENTS WITHIN THE PRESSURE VESSEL CONTAINING THE CORE; SELECTION OF SPECIFIC COOLANTS [G21C-15/00] {7}
DIG 207  DF  MONITORING; TESTING; MAINTAINING [G21C-17/00] {9}
DIG 244  DF  ARRANGEMENTS FOR TREATING, FOR HANDLING, OR FOR FACILITATING THE HANDLING OF, FUEL OR OTHER MATERIALS WHICH ARE USED WITHIN THE REACTOR (e.g., within its pressure vessel) [G21C-19/00] {11}
DIG 282  DF  APPARATUS OR PROCESSES SPECIALLY ADAPTED TO THE MANUFACTURE OF REACTORS OR PARTS THEREOF [G21C-21/00] *** (in general Section B, e.g., B23) {1}
DIG 292  DF  DETAILS OF NUCLEAR POWER PLANT [G21D-1/00] *** (control DIG. 296) {3}
DIG 296  DF  CONTROL OF NUCLEAR POWER PLANT [G21D-3/00] *** (control of nuclear reaction in general DIG. 113) {3}
DIG 306  DF  ARRANGEMENTS OF REACTOR AND ENGINE IN WHICH REACTOR-PRODUCED HEAT IS CONVERTED INTO MECHANICAL ENERGY [G21D-5/00] {2}
DIG 315  DF  ARRANGEMENTS FOR DIRECT PRODUCTION OF ELECTRIC ENERGY FROM FUSION OR FISSION REACTIONS [G21D-7/00] *** (obtaining electric energy from radioactive sources DIG. 410) {2}
DIG 318  DF  ARRANGEMENTS TO PROVIDE HEAT FOR PURPOSES OTHER THAN CONVERSION INTO POWER (e.g., for heating buildings) [G21D-9/00]
DIG 319  DF  SHIELDING CHARACTERIZED BY THE COMPOSITION OF THE MATERIALS [G21F-1/00] {2}
DIG 335  DF  SHIELDING CHARACTERIZED BY ITS PHYSICAL FORM (e.g., granules or shape of the material) [G21F-3/00] {2}
DIG 341  DF  TRANSPORTABLE OR PORTABLE SHIELDED CONTAINERS [G21F-5/00] {9}
DIG 355  DF  SHIELDED CELLS OR ROOMS [G21F-7/00] {5}
DIG 375  DF  DECONTAMINATION ARRANGEMENTS; TREATING RADIOACTIVELY CONTAMINATED MATERIAL [G21F-9/00] {5}
DIG 396  DF  ARRANGEMENTS FOR CONVERTING CHEMICAL ELEMENTS BY ELECTROMAGNETIC RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT (e.g., producing radioactive isotopes) [G21G-1/00] {2}
DIG 403  DF  RADIOACTIVE SOURCES [G21G-4/00] *** (producing neutrons or other subatomic particles, X- or gamma rays, in fusion reactors DIG. 1+, in nuclear reactors DIG. 5+; in accelerators H05H; X-ray tubes H01J-35/00; gamma masers H01S-4/00) {2}
DIG 409  DF  ALLEGED CONVERSION OF CHEMICAL ELEMENTS BY CHEMICAL REACTION [G21G-5/00]
DIG 410  DF  ARRANGEMENTS FOR OBTRAINING ELECTRICAL ENERGY FROM RADIOACTIVE SOURCES (e.g., from radioactive isotopes, nuclear or atomic batteries) [G21H-1/00] *** (fusion reactors DIG. 1+; nuclear reactors DIG. 5+) {6}
DIG 419  DF  ARRANGEMENTS FOR DIRECT CONVERSION OF RADIATION ENERGY FROM RADIOACTIVE SOURCES TO FORMS OF ENERGY OTHER THAN ELECTRIC ENERGY (e.g., light) [G21H-3/00] {1}
DIG 421  DF  APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES OR ARRANGEMENTS THEREFOR [G21H-5/00] *** {1}
DIG 423  DF  NUCLEAR EXPLOSIVE DEVICES; "ATOMIC BOMBS") [G21J-1/00]
DIG 424  DF  PEACEFUL APPLICATIONS OF NUCLEAR EXPLOSIVE DEVICES [G21J-3/00] *** (obtaining oil, gas, water, soluble or meltable material from deep wells by means of nuclear energy E21B-43/236F, 43/24F) {1}
DIG 426  DF  DETECTION ARRANGEMENTS FOR NUCLEAR EXPLOSIONS [G21J-5/00] *** (individual measuring devices G01N)
DIG 427  DF  ARRANGEMENTS FOR HANDLING RADIATION OR PARTICLES (e.g., focusing, moderating [G21K-1/00] *** (radiation filters DIG. 435) {6}
DIG 439  DF  CONVERSION SCREENS FOR THE CONVERSION OF THE SPATIAL DISTRIBUTION OF X-RAYS OR PARTICLE RADIATION INTO VISIBLE IMAGES (e.g., fluoroscopic screens) [G21K-4/00] *** (photographic processes using X-ray intensifiers G03C-5/17; discharge tubes comprising luminescent screens H01J-1/62; cathode-ray tubes for X-ray conversion with optical output H01J-31/50)
DIG 440  DF  IRRADIATION DEVICES [G21K-5/00] *** (discharge tubes for irradiating H01J-37/00) {4}
DIG 445  DF  GAMMA- OR X-RAY MICROSCOPES [G21K-7/00]