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| Number | Title | Issue Date |
| 7358996 | Device for detecting a photonic flux with self-adaptive scanning Scanning type device for detection of a photonic flux emitted by a scene containing at least one acquisition channel (V) comprising: several useful detectors (1) aligned with the scanning, each associated with a preamplifier... | 04/15/2008 |
| 7351985 | Portable watch with radiation monitor A wrist-wearable device combines timekeeping functions with monitoring of the radiation dosage to which the user is exposed and of radiation intensity. A Geiger-Muller counter is used as a radiation detector in a wristwatch. A voltage changer changes voltage from 1.... | 04/01/2008 |
| 7205544 | Dynamic emergency radiation monitor A dynamic radiation monitor having a detector coupled to a computer to determine at any given location, the amount of time a person has before a pre-selected maximum permissible radiation exposure is received. The device dynamically calculates and outputs the user's... | 04/17/2007 |
| 7196631 | Method of utilizing existing fire alarm systems and existing smoke detectors to detect aerolized radioactive material A method of utilizing existing fire panel infrastructure to fight terrorism. The fire alarm systems ionization type smoke detectors, in addition to detecting the presence of smoke, would also detect the presence of airborne radioactive particles by effecting only a ... | 03/27/2007 |
| 7095329 | Radiation monitor for ease of use Provided is a nuclear radiation monitor which has a surface on which are located separate, visible indicia, such as LEDs or an LCD array, with the indicia being distributed around an imaginary closed loop, preferably of circular configuration. The monitor includes a... | 08/22/2006 |
| 7009182 | Low cost digital pocket dosemeter The invention relates to a pocket type digital radiation dosemeter comprising of a detector, which converts the ionisation in the detector caused by the incidence of ionising radiation of certain energy range into electrical impulses, a low power pulse amplifier, th... | 03/07/2006 |
| 6998850 | Systems and methods for measuring picoampere current levels In one embodiment, a circuit measures picoampere current levels. The circuit comprises: an operational-amplifier that has differential inputs and differential outputs; a switching structure that switchably couples an input line to one of the differential inputs in r... | 02/14/2006 |
| 6922455 | Gas-target neutron generation and applications Described herein are integrated systems for generating neutrons to perform a variety of tasks including: on-line analysis of bulk material and industrial process control (as shown in FIG. 1), security interrogation (as shown in FIG. 2), soil and enviro... | 07/26/2005 |
| 6836523 | Radiation measurement device A radiation measurement device includes a radiation detector generating an analog signal containing pulse components, an A/D converter converting the analog signal into sampled data, an n-th power pulse discrimination unit calculating n-th power values of the sample... | 12/28/2004 |
| 6765214 | Smart radiological dosimeter A radiation dosimeter providing an indication of the dose of radiation to which the radiation sensor has been exposed. The dosimeter contains features enabling the monitoring and evaluating of radiological risks so that a user can concentrate on the task at hand. Th... | 07/20/2004 |
| 6747278 | Radiation detector utilizing an unregulated power supply A radiation detector that utilizes an unregulated power supply as opposed to a regulated power supply, since quantitative results are not required, only an audible signal, and an unregulated power supply is less expensive than that of a regulated power supply. The r... | 06/08/2004 |
| 6703922 | Method for monitoring exposure time of workers in workplace A method for monitoring exposure time of workers involves the use of a sensor, which is carried by the workers for monitoring continually in a real-time fashion in an environment such that the results are recorded by a recorder. The an add-on or built-in ... | 03/09/2004 |
| 6310936 | Thin layer nuclear density guage The present invention provides an improved thin layer nuclear density gauge comprising a gauge housing having a vertical cavity therethrough and a base, a first radiation detector located at a first position within said housing and adjacent to said base o... | 10/30/2001 |
| 6031454 | Worker-specific exposure monitor and method for surveillance of workers A person-specific monitor that provides sensor information regarding hazards to which the person is exposed and means to geolocate the person at the time of the exposure. The monitor also includes means to communicate with a remote base station. Informati... | 02/29/2000 |
| 5621214 | Radiation beam scanner A radiation beam scanner system employs a peak detection methodology to measure the intensity and distribution of radiation produced by a medical linear accelerator. The scanner system combines the capability to perform scanning measurements with the capa... | 04/15/1997 |
| 5231288 | Audible radiation monitor A method and apparatus for monitoring ionizing radiation comprising radiation detectors in electrical connection with an isotopic analyzer and a device for producing chords to which each isotope is mapped so that the device produces a unique chord for eac... | 07/27/1993 |
| 5132543 | Electronic pocket dosimeter Small, light-weight portable radiation measurement apparatus provides accurate quantitative measurment of radiation dosage and dosage rates. Such apparatus, referred to as a dosimeter, is housed in a ruggedized housing that is only about 1/2 the volume of... | 07/21/1992 |
| 5045700 | Headgear-mounted indicator for ionizing radiation A visual display for indicating a level of ionizing radiation is mounted on a portion of an item of headwear, such as safety goggles, at a position within the peripheral field of vision of a wearer. Such a display advises a wearer of a level of radiation,... | 09/03/1991 |
| 5023456 | Radiation detector system A flame and radiation detector system is provided with programmable logic to read the detector and control the detector voltage supply in order to make possible a high counting rate. This makes the radiation detecting system fast and reliable by increasin... | 06/11/1991 |
| 4996429 | Pocket measuring instrument for measuring ionizing radiation An instrument for measuring ionization radiation acting upon a person is mounted in a housing which can be carried in the pocket of a garment, the housing includes a forwardly projecting portion having a radiation detector mounted in the forwardmost porti... | 02/26/1991 |
| 4968890 | Charged particle beam-dosimeter This invention relates to a charged particle beam-dosimeter comprising an ionization chamber which produces an ionization current having a magnitude proportional to the dose of a charged particle beam, an operational amplifier which is connected to the ou... | 11/06/1990 |
| 4963747 | Ionizing radiation detector An ionizing radiation detector is provided which is based on the principle of analog electronic integration of radiation sensor currents in the sub-pico to nano ampere range between fixed voltage switching thresholds with automatic voltage reversal each t... | 10/16/1990 |
| 4859854 | Open grid pulsed ion chamber operating in the linear ion collection region A detector for airborne alpha radiation includes a ion pulse collecting chamber connected to a phase shifted, 100% negative feedback electrometer circuit. The ion pulse chamber includes a probe surrounded by an 80% open grid, with the spacing between the ... | 08/22/1989 |
| 4857739 | Packet personal radiation monitor A personal radiation monitor of the chirper type is provided for detecting ionizing radiation. A battery powered high voltage power supply is used to generate and apply a high voltage bias to a G-M tube radiation sensor. The high voltage is monitored by a... | 08/15/1989 |
| 4818884 | Low cost appliance for continuously monitoring levels of ionizing radiation in premises for human occupation Apparatus for the continuous monitoring of levels of ionizing radiation in premises for human occupation is provided, including an enclosure for location in premises to be monitored, an ionizing radiation transducer within the enclosure and producing coun... | 04/04/1989 |
| 4769547 | Personal dosimeter having a volume of gas atop an integrated circuit A dosimeter that includes tissue equivalent bubbles of plastic defining volumes of gas to be ionized by radiation. One or more integrated circuits (ICs) are disposed below the volumes of gas and a collecting electrode on the IC is in direct contact with t... | 09/06/1988 |
| 4767929 | Extended range radiation dose-rate monitor An extended range dose-rate monitor is provided which utilizes the pulse pileup phenomenon that occurs in conventional counting systems to alter the dynamic response of the system to extend the dose-rate counting range. The current pulses from a solid-sta... | 08/30/1988 |
| 4680471 | Integrated circuit packaging An integrated circuit comprising: a semiconductor die having an integrated circuit formed therein; a package for supporting the die and for providing electrical contact thereto, the radiation properties of the package having been characterized as follows:... | 07/14/1987 |
| 4654528 | Radiation level reporting system A remote sensing transponder system is disclosed including apparatus for sensing gamma radiation levels proximate thereto, generating a signal indicative of the sensed radiation level, and transmitting an RF Signal modulated with the generated signal to a... | 03/31/1987 |
| 4644167 | Radiation dose rate measuring device A beta radiation particle detector having a housing that is substantially impervious to beta radiation particles and which surroundingly encompasses an ionization chamber which is defined by electrically conductive walls is disclosed. The walls terminate ... | 02/17/1987 |
| 4642463 | Intelligent radiation monitor An intelligent radiation monitor is disclosed which includes, as major components, a radiation detector (for detecting real time radiation rate), a digital processor and a display. The digital processor includes intelligence to perform several useful, and... | 02/10/1987 |
| 4629897 | Automatic high insulation switch Proportional detector intended to detect ionizing radiations for 2-dimension localization. This detector consists of a network of conducting wires (2) forming the anodes of an ionization chamber and operating under avalanche conditions and is characterize... | 12/16/1986 |
| 4620101 | Charging switch for a bar dosimeter for ionizing radiation The disclosure concerns a bar dosimeter used for measuring ionizing radiation. In a hollow housing, an axially deflectible contact pin is centrally supported in a deflectible membrane. The pin and the membrane are deflectible over center to a first deflec... | 10/28/1986 |
| 4617680 | Dead time compensation circuit for radiation detector A Geiger-Mueller tube-based radiation measurement device includes circuitry for the correction of the dead time losses associated with the Geiger-Mueller tube. As the event count rate rises, the transfer function (e.g., the closed loop voltage gain) of an... | 10/14/1986 |
| 4596933 | Batteryless magneto-driven portable radiac A hand-powered alternator for generating an alternating voltage provides same through a rectifier to a high capacity capacitor which stores the resultant dc voltage and drives a voltage regulator to provide a constant low voltage output for a portable rad... | 06/24/1986 |
| 4596932 | Portable dosimeter A dosimeter for measuring the intensity of high energy electron, photon, or other particle radiation has ion, electron, and radiation shields about at least respectively sensitive components of the dosimeter. The entire dosimeter, therefore, can be assemb... | 06/24/1986 |
| 4588892 | Wide-range radiation dose monitor A radiation dose-rate monitor is provided which operates in a conventional linear mode for radiation in the 0 to 0.5 R/h range and utilizes a nonlinear mode of operation for sensing radiation from 0.5 R/h to over 500 R/h. The nonlinear mode is achieved by... | 05/13/1986 |
| 4562354 | Apparatus for measuring beta-gamma radiation exposure An ionization chamber of reduced size, with an end window of a diameter preferably smaller than 3 cm is mounted on the end of a hand probe containing an amplifier, the output of which goes through a cable to an indicating device. One of a set of aperture ... | 12/31/1985 |
| 4546257 | Devices for measuring ionizing radiations The invention provides a device for measuring ionizing radiations, comprising a Geiger-Muller tube (1) whose high supply voltage is obtained from pulses which are emitted (by 6,7) at a constant relatively low frequency as long as a predetermined threshold... | 10/08/1985 |
| 4536841 | Portable neutron spectrometer and dosimeter The disclosure relates to a battery operated neutron spectrometer/dosimeter utilizing a microprocessor, a built-in tissue equivalent LET neutron detector, and a 128-channel pulse height analyzer with integral liquid crystal display. The apparatus calculat... | 08/20/1985 |
