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Class Information
Number: 250/252.1
Name: Radiant energy > Calibration or standardization methods
Description: Subject matter which includes methods to establish a reference indication of invisible radiation or invisible radiation level, or methods of error determination or correction using a reference indication or radiation level.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4173416 |
Scanning heads for transparencies |
Nov. 6, 1979 |
| 4167665 |
Automatic calibration circuit for gas analyzers |
Sep. 11, 1979 |
| 4154672 |
Standardization of penetrating radiation testing system |
May. 15, 1979 |
| 4155009 |
Thickness measurement instrument with memory storage of multiple calibrations |
May. 15, 1979 |
| 4152074 |
Inverse fourth power photometric calibrator |
May. 1, 1979 |
| 4152600 |
Nuclear radiation moisture gauge calibration standard |
May. 1, 1979 |
| 4152595 |
Charge sensing circuit |
May. 1, 1979 |
| 4145142 |
Apparatus for and method of testing direct-view image intensifiers |
Mar. 20, 1979 |
| 4128340 |
Portable test apparatus for low light level devices |
Dec. 5, 1978 |
| 4119847 |
Calibrator for radioactivity well logging tools |
Oct. 10, 1978 |
| 4119846 |
Non-contacting gage apparatus and method |
Oct. 10, 1978 |
| 4096575 |
Delay time compensation incorporating two sensing devices |
Jun. 20, 1978 |
| 4095105 |
Standardizing test sample |
Jun. 13, 1978 |
| 4092539 |
Radiation monitor |
May. 30, 1978 |
| 4085323 |
Calibrator for radioactivity well logging tools |
Apr. 18, 1978 |
| 4082950 |
Calibration assembly for infrared moisture analyzer |
Apr. 4, 1978 |
| 4081684 |
Combustion product detector |
Mar. 28, 1978 |
| 4079257 |
Automatic control system for a scintillation camera |
Mar. 14, 1978 |
| 4075480 |
Quench determination in liquid scintillation counting systems |
Feb. 21, 1978 |
| 4068952 |
Range testing system having simulated optical targets |
Jan. 17, 1978 |
| 4064396 |
Dynamic linearization system for a radiation gauge |
Dec. 20, 1977 |
| 4060726 |
Gamma counter calibration system |
Nov. 29, 1977 |
| 4059760 |
Georadiological surveying for oil and gas and subsurface structure contour mapping |
Nov. 22, 1977 |
| 4055771 |
Test body for a scanning tomographic analytical apparatus |
Oct. 25, 1977 |
| 4055763 |
Neutron characteristic and spectroscopy logging methods and apparatus |
Oct. 25, 1977 |
| 4053767 |
Method and apparatus for stabilizing signals in radioactive well logging tools |
Oct. 11, 1977 |
| 4053785 |
Optical smoke detector with smoke effect simulating means |
Oct. 11, 1977 |
| 4047032 |
Standard for spectral reflectance |
Sep. 6, 1977 |
| 4031387 |
Method of determining whether radioactive contaminants are inside or outside a structure |
Jun. 21, 1977 |
| 4028545 |
Method of simulating spherical voids for use as a radiographic standard |
Jun. 7, 1977 |
| 4027163 |
Method of compensating for quenching effect of substance contained in a sample gas the radioactivity of which is to be measured by a radioactivity detector and apparatus for performing the sam |
May. 31, 1977 |
| 4021662 |
Laser target simulator |
May. 3, 1977 |
| 4016418 |
Method of radioactivity analysis |
Apr. 5, 1977 |
| 4010372 |
Device for measuring the ultra-violet radiation in the UV-A and/or UV-B range |
Mar. 1, 1977 |
| 4010366 |
Measurement of the mass and charge of charged particles |
Mar. 1, 1977 |
| 4009376 |
Method and apparatus for measuring material thickness |
Feb. 22, 1977 |
| 4002904 |
Simultaneous thermal neutron lifetime and boron content well log |
Jan. 11, 1977 |
| 3988587 |
Method and apparatus for indicating the radioactive decay products of radium in an environment |
Oct. 26, 1976 |
| 3986384 |
Variable contrast passive infrared target |
Oct. 19, 1976 |
| 3979589 |
Method and system for the infrared analysis of gases |
Sep. 7, 1976 |
| 3970848 |
Profile technique for calibrating infrared thermal imaging systems |
Jul. 20, 1976 |
| 3956630 |
Fluorimetric coat weight measurement |
May. 11, 1976 |
| 3955086 |
Radiation thickness gauge |
May. 4, 1976 |
| 3954002 |
Method for calibrating moisture content measuring instruments |
May. 4, 1976 |
| 3953735 |
Radiation sensing device |
Apr. 27, 1976 |
| 3950648 |
Scintillation camera |
Apr. 13, 1976 |
| 3935449 |
Method for calibration measurement in a liquid scintillation counter and carrier used in the method |
Jan. 27, 1976 |
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