Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7655921 | Dosimeter for the detection of neutron radiation Disclosed is a dosimeter (1) for the detection of neutron radiation within an energy range of 0.025 eV to several hundred GeV, comprising a substantially spherical base body (3) which is used as a moderation body and which comprises hydrogenous materia... | 02/02/2010 |
| 7465937 | Dosimeter for the detection of high-energy neutron radiation A dosimeter for detecting high-energy neutron radiation having a neutron converter and a detection element is proposed which is characterized by the neutron converter comprising metal atoms which convert the energy of the neutrons into protons, alpha particles and o... | 12/16/2008 |
| 7217930 | Dose detector and dosimeter A dose detector includes a semiconductor radiation detector; a dose counter; and a check counter. The dose detector detects that the semiconductor radiation detector is outputting white noise even in a radiation shielded area and judges that the semiconductor radiat... | 05/15/2007 |
| 7208743 | Method and device for determining the personal dose in mixed neutron/photon fields The invention relates to an instrument which uses an individual semi-conductive detector with special coverings as an essential sensor, and a method whereby the amplitude information of the signals from said semi-conductive detector are used to determine a person's ... | 04/24/2007 |
| 7151267 | Methods and devices for measuring the activity of a radioisotope A method of measuring the activity of a radioisotope (3) placed in an ionisation chamber (1) consists in:—determining the energy spectrum of the radiation emitted by the radioisotope;—automatically comparing the energy spectrum with a set of pre-re... | 12/19/2006 |
| 7098463 | Three-dimensional dosimeter for penetrating radiation and method of use This invention relates to a method of forming a three-dimensional (3D) dosimetric map in a solid translucent or transparent polymer and to an article of manufacture comprising a polymer formulated to capture data imparted by incident penetrating radiation. The prese... | 08/29/2006 |
| 6930311 | Lightweight neutron remmeter A lightweight neutron remmeter for measuring neutron equivalent dose with a response range from the thermal energy levels to around 14 MeV is achieved using a center BF3 proportional neutron detector moderated by enclosure within a cylindrical center tube... | 08/16/2005 |
| 6924487 | Neutron detector A neutron detector is provided which is able to measure thermal neutron radiation within a gap filled with a substance that permits scintillation in the absorption of thermal neutron radiation, the gap being formed between at least a first and second spaced apart ph... | 08/02/2005 |
| 6596998 | Method and system for identifying the source of a signal A method for determining which of a plurality of detectors transmitted a signal, such as a signal related to neutron or gamma emissions, includes connecting each of the detectors to a single cable, such as an environmentally rugged cable. Signals are tran... | 07/22/2003 |
| 6529573 | Proton recoil scintillator neutron rem meter A neutron rem meter utilizing proton recoil and thermal neutron scintillators to provide neutron detection and dose measurement. In using both fast scintillators and a thermal neutron scintillator the meter provides a wide range of sensitivity, uniform di... | 03/04/2003 |
| 6362485 | Neutron radiation detector A neutron monitoring instrument, principally of the survey type, is provided with an inner neutron detector(s) enclosed in a layer of neutron attenuating material and one or more outer neutron detectors provided on the attenuating layer and enclosed in a ... | 03/26/2002 |
| 6140651 | Optically stimulated, fast neutron sensor and dosimeter and fiber-optic coupled fast neutron remote sensor and dosimeter An apparatus and method for the measurement of fast neutrons is described. he apparatus comprises a proton radiator with a doped glass, such as a Nd-doped glass containing ZnS:Cu. The dosimeter may be read by either laser heating or infrared stimulation of... | 10/31/2000 |
| 5712166 | Method and material for the detection of ionizing radiation A method and materials are described for the monitoring of ionizing radiation in a location or on a person. The method comprises providing a fluorescent organic sensor material in the location where monitoring is required, the fluorescent organic sensor m... | 01/27/1998 |
| 5672465 | Polyethyleneimine binder complex films Described is a radiation sensitive imaging film containing a heat fixable radiation sensitive element, e.g., a diacetylene, of the formula: R--C.tbd.C--C.tbd.C--R', where R and R' are, e.g., both --CH2 --O--CONH--(CH2)5 CH... | 09/30/1997 |
| 5578830 | Neutron dose equivalent meter A neutron dose equivalent detector for measuring neutron dose capable of accurately responding to neutron energies according to published fluence to dose curves. The neutron dose equivalent meter has an inner sphere of polyethylene, with a middle shell ov... | 11/26/1996 |
| 5572027 | Integrated dosimeter for simultaneous passive and active dosimetry A radiation monitoring system and method characterized by the use of paired active and passive radiation detectors to monitor exposure to a radiation field. The active detector provides an output representative of radiation exposure on a real time basis w... | 11/05/1996 |
| 5567936 | Light emitting diode reference locket A reference locket for use in calibrating a radiac computer indicator or trument having a light emitting diode or LED. The present invention is an inexpensive stable device having a base, a retainer placed in the base holding a light emitting diode or LE... | 10/22/1996 |
| 5477050 | Radiation sensor dosimetry circuit A radiation sensor of the type that acquires a charge or voltage proportil to a dose of radiation. Upon obtaining a predetermined value to the associated voltage proportional to the dose, the voltage is caused to be discharged. A counter keeps track of t... | 12/19/1995 |
| 5420000 | Heat fixable high energy radiation imaging film Described is a radiation sensitive imaging film containing a heat fixable radiation sensitive element, e.g., a diacetylene, of the formula: R--C.tbd.C--C.tbd.C--R', where R and R' are, e.g., both --CH2 --O--CONH--(CH2)5 CH... | 05/30/1995 |
| 5406086 | Particle dose rate meter A radiation dose rate meter is provided which includes a diode for sensing radiation, and an electric measuring circuit divided into two branches having different frequential filters, one filter for measuring alpha particles, protons and neutrons and anot... | 04/11/1995 |
| 5321269 | Neutron individual dose meter, neutron dose rate meter, neutron detector and its method of manufacture A neutron individual dose meter and a neutron dose rate meter, both capable of implementing the effective dose equivalent response. The neutron individual dose meter is capable of being accomplished by providing a composite layer made up of a converter su... | 06/14/1994 |
| 5278417 | High energy neutron dosimeter A device for measuring dose equivalents in neutron radiation fields. The device includes nested symmetrical hemispheres (forming spheres) of different neutron moderating materials that allow the measurement of dose equivalents from 0.025 eV to past 1 GeV.... | 01/11/1994 |
| 5083028 | Individual measuring device for the neutron dose equivalent Individual measuring device for the neutron dose equivalent comprising a detector (10) constituted by two identical diodes (13, 14). The first diode (13) is covered by a charged particle neutron converter (16). Converter (16) and the second diode (14) are... | 01/21/1992 |
| 5015855 | Radiation dosimetry by counting differentially ionized sample areas from heavy charged particle events Dosimeter reading methods and apparatus particularly useful in the measurement of heavy particle radiation dose exposure, such as from neutrons, protons, and alpha particles among others. The methods include exposing a dosimeter to a radiation environment... | 05/14/1991 |
| 5004921 | Mixed field personnel dosimetry method and apparatus for determination of risk related quantity via a nearly tissue equivalent multi-element thermoluminescent dosimeter The method and system interpretation for determining dose equivalents of a multi-element thermoluminescent dosimeter in mixed photon-beta and photon-neutron fields is described. The four TL Elements are covered by nearly tissue equivalent filters includin... | 04/02/1991 |
| 4897550 | Apparatus for the characterization of fissile material having at least one neutron radiation detector located in a gamma radiation detection scintillator It comprises an enclosure, a neutron emitting source (29) for bombarding said fissile material, means (28, 30) for introducing source (29) into the enclosure and for removing said source from the enclosure, neutron radiation detection means (9), moderator... | 01/30/1990 |
| 4874951 | Solid-state track recorder dosimetry device to measure absolute reaction rates and neutron fluence as a function of time A solid state track recording type dosimeter is disclosed to measure the time dependence of the absolute fission rates of nuclides or neutron fluence over a period of time. In a primary species an inner recording drum is rotatably contained within an exte... | 10/17/1989 |
| 4857259 | Neutron dosimeter A neutron dosimeter and a method for neutron dosimetry involving a two-layer structure, one layer being a fissile material, and the other being a material which changes its conductivity in accordance with a density of implanted ions. Neutrons striking the... | 08/15/1989 |
| 4808271 | Electroplating method for producing ultralow-mass fissionable deposits A method for producing ultralow-mass fissionable deposits for nuclear reactor dosimetry is described, including the steps of holding a radioactive parent until the radioactive parent reaches secular equilibrium with a daughter isotope, chemically separati... | 02/28/1989 |
| 4804514 | Method and apparatus for neutron dosimetry A method and apparatus for measuring a neutron flux in which the neutrons induce fission reactions in the layer of fissile material, the fission reactions in turn inducing light pulses in a scintillator material. A photomultiplier tube detects the light p... | 02/14/1989 |
| 4779000 | Detector/dosimeter for gamma and microwave radiation A direct reading, self-powered detector and dosimeter for gamma rays, and other low LET radiation, and optionally microwaves, is described. A transparent elastic solid medium contains uniformly dispersed droplets of a very high vapor pressure detector liq... | 10/18/1988 |
| 4757202 | Solid state dosimeter This invention provides a direct reading solid-state dosimeter which will measure neutron and gamma radiation. A dual metal-oxide-semiconductor field-effect transistor (MOSFET) is used as a gamma sensor and a forward biased PIN diode as a neutron sensor. ... | 07/12/1988 |
| 4749866 | Method for detecting and correcting for isotope burn-in during long-term neutron dosimetry exposure A method is described for detecting and correcting for isotope burn-in during-long term neutron dosimetry exposure. In one embodiment, duplicate pairs of solid state track recorder fissionable deposits are used, including a first, fissionable deposit of l... | 06/07/1988 |
| 4744939 | Method for correcting for isotope burn-in effects in fission neutron dosimeters A method is described for correcting for effect of isotope burn-in in fission neutron dosimeters. Two quantities are measured in order to quantify the "burn-in" contribution, namely PZ',A', the amount of (Z', A') isotope that is burned-in, and ... | 05/17/1988 |
| 4737234 | Method and apparatus for permanently recording high neutron fluence A method and apparatus are described for producing a high fluence neutron dosimeter which serves as a permanent record for fission rate measurement. An alpha-emitting source which is a radioactive parent of the daughter isotope of interest is used to impl... | 04/12/1988 |
| 4729866 | High fluence neutron dosimetry method A high fluence neutron dosimetry method is described, including the steps of: exposing a dosimeter containing an alpha-emitting target isotope to neutron irradiation to form an alpha-emitting product isotope; determining the alpha decay rates of the targe... | 03/08/1988 |
| 4699751 | Neutron dosimeter A dosimeter which incorporates new methods for determining neutron dose. Less than one millirad of dose due to neutrons of all energies down to approximately 103 eV can be measured, and the response can be adjusted by design of the dosimeter. T... | 10/13/1987 |
| 4641037 | Organic metal neutron detector A device for detecting neutrons comprises a layer of conductive polymer sandwiched between electrodes, which may be covered on each face with a neutron transmissive insulating material layer. Conventional electrodes are used for a non-imaging integrating ... | 02/03/1987 |
| 4613758 | Direct reading detector/dosimeter for neutrons and other high LET radiation A direct reading detector/dosimeter for neutrons and other high LET radiation is described, comprising a selected, substantially transparent, elastic solid medium uniformly impregnated with droplets of an immiscible detector liquid. The detector liquid-in... | 09/23/1986 |
| 4588898 | Apparatus for measuring dose energy in stray radiation fields An apparatus for measuring dose equivalent, absorbed dose and neutron fluence in stray radiation fields of neutron source. The apparatus includes a moderator sphere having an outer surface and a neutron detector disposed in the center of the moderator sph... | 05/13/1986 |
