Dosimeter for ionizing radiation
Patent 4956557 Issued on September 11, 1990. Estimated Expiration Date: 
February 15, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 15, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesX-ray exposure device comprising a gas-filled chamber Ionization chamber Curved gas-filled detector with avalanche of electrons, and strip Apparatus for slit radiography High resolution X-ray collimator/detector system having reduced sensitivity to leakage radiation Dosimeter for ionizing radiation Patent #: 4859855 InventorAssigneeApplicationNo. 311107 filed on 02/15/1989US Classes:250/385.1, Plural chambers or three or more electrodes250/354.1, Signalling means controls incident radiation378/145BEAM CONTROLExaminersPrimary: Hannaher, ConstantineAssistant: Glick, Edward J. Attorney, Agent or FirmInternational ClassesG21K 001/04G01T 001/185 Foreign Application Priority Data1985-11-15 NLAbstractThere is disclosed a dosimeter to be used in connection with slit radiography and comprised of a gas filled chamber with one side wall provided with a plurality of X-ray transparent strip-like electrodes extending substantially transversely to a longitudinal direction of the oblong-shaped casing and another side wall provided with wire electrodes extending parallel to such longitudinal direction of the oblong-shaped casing wherein each of the strip-like electrodes generates a signal representative of intensity of ionizing radiation and wherein the strip-like electrodes are divided into a number of groups, signals from the strip-like electrodes belonging to each group are combined to provide a control signal for a respective attenuation element. | |
