Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7279120 | Doped cadmium tungstate scintillator with improved radiation hardness This invention provides novel cadmium tungstate scintillator materials that show improved radiation hardness. In particular, it was discovered that doping of cadmium tungstate (CdWO4) with trivalent metal ions or monovalent metal ions is particularly effe... | 10/09/2007 |
| 7235790 | Methods and apparatus for radiation detection A method for fabricating a detector assembly includes positioning a first scintillator array on a first side of a flexible member, and positioning a first collimator array on a second side of the flexible member. ... | 06/26/2007 |
| 7227158 | Stick-on self-indicating instant radiation dosimeter A dual dosimeter system with (1) a stick-on, self-indicating, instant radiation dosimeter applied onto (2) a conventional radiation dosimeter and/or detector for monitoring high energy radiations, such as X-ray, electrons and neutrons. Radiation dosimeters, such as ... | 06/05/2007 |
| 7037641 | Silver halide emulsion sheet for detecting track of charged elementary particles, and processing method thereof A silver halide emulsion sheet for detecting track of charged elementary particles, in which emulsion at least one silver halide emulsion layer and at least one hydrophilic protective colloid layer are applied on both surfaces of a transparent support, and a compoun... | 05/02/2006 |
| 6916600 | Silver halide emulsion sheet for detecting track of charged elementary particles, and processing method thereof A silver halide emulsion sheet for detecting track of charged elementary particles, in which emulsion at least one silver halide emulsion layer and at least one hydrophilic protective colloid layer are applied on both surfaces of a transparent support, and a compoun... | 07/12/2005 |
| 6744055 | Miniature personal and area radon and thoron monitor A Rn222 (radon) and Rn220 (thoron) radiation monitor that uses alpha-track detection film in multiple, separate chambers to detect radiation, wherein different diffusion barriers are used in each of the chambers to allow for signal differentiation between the chambe... | 06/01/2004 |
| 6528803 | Automated calibration adjustment for film dosimetry The present invention provides a method of correcting errors in film dosimetry measurements arising from variations in radiographic film processing and manufacturing. The method includes: (1) irradiating separate and distinct areas of one or more calibrat... | 03/04/2003 |
| 6127685 | Dosimeter device including body locator indicia Disclosed is a dosimeter badge that includes body locator indicia consisting of an icon representing a portion of a human body and indicia, such as a dot, associated therewith to indicate where, on the body, the badge should be worn. This information as t... | 10/03/2000 |
| 5990485 | Label for certifying an inspection by penetrating radiation A label is provided, comprising a means wherein penetrating radiation leaves a human- or machine-readable semi-permanent or permanent mark. Preferably said means is a storage phosphor. A method for using such a label for checking if an articles has been i... | 11/23/1999 |
| 5767520 | Radiation dosimetry method and apparatus A method for determining a level of exposure to radiation utilizes a radiation dosimeter comprising a substrate provided with a radiation sensitive layer or patch having an optical density which varies in accordance with the degree of radiation exposure. ... | 06/16/1998 |
| 5731589 | Ultraviolet radiation dosimeter The invention relates to a radiation dosimeter comprising a sensor arranged in a dosimeter casing and including at least one measuring field and a calibrating zone (64). To provide a dosimeter which can be readily manufactured and comprises a wide measuri... | 03/24/1998 |
| 5620836 | Assortment of silver halide photographic industrial x-ray films and method of processing said assortment According to this invention an assortment is offered of at least five silver halide industrial X-ray photographic materials, to be processed in the processing cycle of an automatic processing machine following the steps of developing, rinsing, fixing, rin... | 04/15/1997 |
| 5583343 | Flexible nuclear medicine camera and method of using A nuclear medicine camera 10 and method of use photographically record radioactive decay particles emitted from a source, for example a small, previously undetectable breast cancer, inside a patient. The camera 10 includes a flexible frame 20 containing a... | 12/10/1996 |
| 5483076 | Autoradiography cassette An autoradiography cassette maintains a sample in close contact with a film and prevents extraneous light from exposing the film. The cassette includes a substantially flat base plate and two flexible magnetic sheets. A first flexible magnetic sheet is at... | 01/09/1996 |
| 5430308 | 3-dimensional radiation dosimeter A three-dimensional dosimetry system and method for calibrating and mapping the expected radiation dose to be applied to a particular volume of tissue. In one embodiment, a stack of film is positioned within a radiation generation apparatus and is exposed... | 07/04/1995 |
| 5359200 | Radiation dosimeter A radiation dosimeter for preparing a dosage map of a specific rotary canister of a blood radiating machine. This dosimeter includes a sandwich assembly of a first panel and a second panel and a gamma ray-sensitive film disposed therebetween, for mounting... | 10/25/1994 |
| 5132535 | Track registration detector for radon concentrations A detector for radon concentrations is provided having a housing, a cover member and a track registration device. The housing has a groove defined by a base, an inner wall and an outer wall with the inner wall and the outer wall extending from the base. T... | 07/21/1992 |
| 5128978 | Film holder for autoradiographic imaging A film cassette designed to receive photosensitive film in a light protective envelope and maintain lighttight integrity while removing the protective envelope includes means for bringing a light emitting enhancer screen into intimate contact with the pho... | 07/07/1992 |
| 5081362 | Directional radiation probe A directional radiation probe assembly for making precision radiation surveys in low intensity radiation fields through measurement of the relative intensities of radiation source distributed about a base point. The assembly include a positionable base me... | 01/14/1992 |
| 5051596 | Autography marking tape Marking tape adapted for use in autography, comprising: a substrate having an upper surface, a phosphorescent coating applied to the upper surface, the coating including phosphor powder grains, the grains phosphorescing with light at a wavelength between ... | 09/24/1991 |
| 5039866 | Nuclear track detector method for radon monitoring in buildings through the 210 polonium measurement on glass An in-situ method for monitoring of retrospective long-term radon exposures in dwellings is disclosed. Typically one nuclear track detector is placed on a glass surface to measure the alpha track density due to the glass alpha activity background plus the... | 08/13/1991 |
| 4961502 | Reusable sterile x-ray cassette holder An X-ray cassette holding which is capable of being sterilized for use in an Operating Room includes a hinged cover and an opening for receiving a non-sterile X-ray cassette. A receiver portion into which the cassette is inserted is spaced from the interi... | 10/09/1990 |
| 4954716 | Package and support structure for radiation detector A package for shielded handling of a detector element and for selective exposure of said detector element to radiation, typically in radon detection of emitted alpha particle radiation, is provided in a unitary assembly. The package provides a support str... | 09/04/1990 |
| 4920272 | Detector for radon A detector member having the property of forming damage tracks along the paths traversed by impinging alpha particles is provided with at least two opposing detection surfaces exposed on respective opposite sides of the detector member. The opposing detec... | 04/24/1990 |
| 4853724 | Sheet film package and device for loading sheet films A sheet film package includes a tray for storing a stack of sheet films and a flexible cover member peelably attached to the tray in covering relation to a film access opening for shielding the sheet films in the tray from extraneous light. The cover memb... | 08/01/1989 |
| 4839266 | Recording system for irradiation therapy A recording system for megavolt irradiation therapy, in which the recording is carried out by the therapeutic irradiation during the entire period of irradiation, comprising a silver halide film that has a gradation of at least 4 when exposed with visible... | 06/13/1989 |
| 4825152 | Transient field indicator A photographic film is adapted to provide visual record of the occurrence of a transient electrostatic or transient magnetic field by the inclusion of metallic patterns close to the film. The patterns are of a geometry to define gaps at which the fields a... | 04/25/1989 |
| 4797701 | Apparatus for the remote localization of radioactive sources Apparatus for the remote localization or location of radioactive sources having a pinhole camera, whereof the walls constitute a shield for radioactive radiation, said camera having an opening making it possible to introduce a first film able to detect ra... | 01/10/1989 |
| 4734925 | Plain film platform for projecting screen apparatus, X-ray picture apparatus or the like A plain film platform for projection screen apparatus for X-ray apparatus has a platform member, a first fixed guiding strip for a film extending along one vertical side, a second fixed guiding strip extending along a lower side near the opposite vertical... | 03/29/1988 |
| 4707435 | Industrial X-ray system Industrial radiographic systems having low grainines and high information density may be constructed with intensifying screens sandwiching radiation sensitive elements having emulsions wherein the average size of the silver halide grains is less than 0.4 ... | 11/17/1987 |
| 4667107 | Ultrafast neutron detector The invention comprises a neutron detector (50) of very high temporal resolution that is particularly well suited for measuring the fusion reaction neutrons produced by laser-driven inertial confinement fusion targets. The detector comprises a biased two-... | 05/19/1987 |
| 4665004 | Method for dual image recording of medical data A laser beam records a digital representation of a medical picture and medical information on an optical data storage strip. The strip is adhered to a medium containing an eye readable picture generated from the same data, such as X-ray pictures, CAT-scan... | 05/12/1987 |
| 4526862 | Film-based dual energy radiography Film packages for obtaining x-ray energy-difference images simultaneously by exposing a body to a broad energy spectrum x-ray beam. One package embodiment has two radiographic films joined at at least two edges to form a pocket in which a light-opaque she... | 07/02/1985 |
| 4513078 | Film-based dual energy radiography X-ray energy-difference images are obtained simultaneously by exposing a body to a broad energy spectrum X-ray beam while a radiographic film package is disposed between front and rear X-ray intensifying screens. The film package has two superimposed film... | 04/23/1985 |
| 4510392 | Autoradiogram marking process A process of forming indicia on autoradiograms is disclosed wherein a substrate containing a distribution of radioactive material, such as radioactively tagged proteins, is marked with a hexagonal Wurtzite form of zinc sulfide doped with trace metals phos... | 04/09/1985 |
| 4510393 | Photo chamber for recording chemical reactivity A portable photo chamber for photographically recording the extent of a chemical reaction such as in an immunological test, wherein a substrate emitting radiation such as gamma radiation is supported in facing contact with a film and with intensifying mea... | 04/09/1985 |
| 4358685 | Cooled film cassette for gamma radiography A cassette particularly for supporting a gamma radiography film (12). Said cassette comprises a channel section bar (1) with two flanges (3, 4) to which a tube (5, 7) is welded. A cooling fluid is made to flow through said tube. The film needs cooling whe... | 11/09/1982 |
| 4047193 | Apparatus for opening radiographic cassettes An apparatus for unloading radiographic cassettes under daylight conditions comprises an inclined tunnel-shaped body which may be mounted at the front side of a processing machine. Within the tunnel-shaped body an automatic unlocking mechanism is provided... | 09/06/1977 |
| 4012637 | Radiographic screen with improved resolution A conventional x-ray screen-film system includes a phosphor intensifying screen "sandwich", including a backing layer facing the x-rays, the phosphor layer itself, and a so-called "overlayer" adjacent the photographic film. X-rays passing through the back... | 03/15/1977 |
| 3988513 | Silver halide emulsions for recording electron rays A silver halide emulsion for recording electron rays which comprises a silver halide emulsion containing silver halide grains having an average particle size below 0.2 microns and at least one sensitizing dye represented by the following formula: ##S... | 10/26/1976 |
