| Patents for G21K 4 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens (3,266) |
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| 11/06/1991 | EP0454907A1 Reproduction of x-ray images with photostimulable phosphor |
| 10/29/1991 | US5061852 Radiation image read-out apparatus |
| 10/09/1991 | CN1055245A X-ray radiographing system |
| 10/08/1991 | US5055681 Alkali halide phosphors |
| 09/25/1991 | EP0448161A1 Method for improving the adherence to radiation cured coatings |
| 09/25/1991 | EP0447524A1 Apparatus for scanning transparent phosphors |
| 09/24/1991 | US5051596 Autography marking tape |
| 09/24/1991 | US5051589 Forming radiation images from x-rays signals |
| 09/24/1991 | US5051588 Radiation image read-out apparatus |
| 09/18/1991 | EP0446588A1 Luminescent output screen for X-ray intensifying screen |
| 09/18/1991 | EP0446384A1 X-ray diagnostic apparatus with a storming luminance screen |
| 09/11/1991 | EP0445360A2 Antistatic lead screens for use with x-ray films |
| 09/11/1991 | EP0445338A1 Outscreen for a radiographic image intensifyer |
| 09/10/1991 | US5047643 Radiation image read-out apparatus |
| 09/10/1991 | US5047642 Radioluminescent screen with an improved quality factor and spatial resolution for X or gamma photon imaging |
| 09/08/1991 | CA2025982A1 Antistatic lead screens for use with x-ray films |
| 09/04/1991 | EP0444677A2 X-ray radiographing system |
| 09/03/1991 | US5046118 Tone-scale generation method and apparatus for digital x-ray images |
| 09/03/1991 | US5045682 X-ray image intensifier having columnar crystals having a cross section decrease as it goes towards the edge |
| 08/22/1991 | WO1991012563A1 Transparent radiation image storage panel |
| 08/22/1991 | WO1991012540A1 Tone-scale generation method and apparatus for digital x-ray images |
| 08/14/1991 | EP0440854A1 Process of manufacturing a stimulable storage phosphor screen |
| 08/14/1991 | EP0440853A1 Stimulable luminescent storage panel |
| 08/13/1991 | US5039448 Photoluminescent phosphors |
| 08/06/1991 | US5038037 Radiation image recording and read-out apparatus |
| 07/30/1991 | US5036207 Medical Diagnosis |
| 07/25/1991 | WO1991011011A1 Solid-state structure for intensifying the effect of x-ray radiation, particularly for industrial applications |
| 07/25/1991 | WO1991009327A3 Rule-based technique to automatically determine the final scan gain in storage phosphor radiography |
| 07/25/1991 | DE4001516A1 Layer structure esp. for imaging screen - has transparent phosphor layer and polarisation on the sides of the layer structure |
| 07/23/1991 | US5034607 Group 2A oxide-halo-germanate(silicate) with rare earth and 1A metal dopant |
| 07/16/1991 | US5033046 Dental X-rays |
| 07/16/1991 | US5032732 Phosphor, reflector |
| 07/09/1991 | US5030834 Fiber optic dosimeter system using electron trapping materials |
| 07/03/1991 | EP0435241A2 Phosphor for X-ray intensifying screen and X-ray intensifying screen |
| 07/02/1991 | US5029247 X-ray image intensifier and method of manufacturing input screen |
| 07/02/1991 | US5028785 Radiation image recording and read-out apparatus |
| 07/02/1991 | US5028509 Stimulating with infrared laser, detecting fluorescence |
| 06/27/1991 | WO1991009327A2 Rule-based technique to automatically determine the final scan gain in storage phosphor radiography |
| 06/18/1991 | US5025164 Antistatic lead screens for use with x-ray films |
| 06/18/1991 | US5025163 Radiographic imaging screen |
| 06/18/1991 | US5024791 Minimizatioin of scattering of electromagnetic radiation beam to form an improved digital radiography storage member |
| 06/12/1991 | EP0431355A2 X-ray intensifying screen and phosphor composition |
| 06/12/1991 | EP0431354A2 X-ray intensifying screen and phosphor composition |
| 06/11/1991 | US5023461 Radiation image storage panel having low refractive index layer and protective layer |
| 06/11/1991 | US5023014 Rare earth element activated complex halide; radiation image storage panel; high luminescence |
| 06/05/1991 | CN1012772B X-ray display tube |
| 06/04/1991 | US5022066 Method of and device for forming layer images of an object |
| 06/04/1991 | US5021671 Radiation image storage panel |
| 05/29/1991 | EP0428667A1 Input screen for radiological image intensifier tube. |
| 05/21/1991 | US5017791 Fluorescent screens which absorb x-ray images |
| 05/21/1991 | US5017781 Read-out system for a luminescent storage screen in an X-ray diagnostics installation |
| 05/21/1991 | US5017440 Inorganic salt |
| 05/17/1991 | CA2026479A1 X-ray intensifying screen and phosphor composition |
| 05/17/1991 | CA2026263A1 X-ray intensifying screen and phosphor composition |
| 05/15/1991 | EP0426865A1 Phosphor plate and method for manufacturing the phosphor plate |
| 05/14/1991 | US5015854 Radiation image displaying apparatus |
| 05/07/1991 | US5013916 Lanthanum oxyhalide phosphor activated with cerium, long wavelengths |
| 04/30/1991 | US5012107 Radiation image storage panel |
| 04/24/1991 | EP0423891A1 Method for recording and detecting a pattern of ionizing radiation |
| 04/18/1991 | WO1991005271A1 Apparatus for scanning transparent phosphors |
| 04/18/1991 | WO1991005270A1 Telecentric scanning for transparent storage phosphors |
| 04/17/1991 | EP0423030A1 Radioluminescent screen with improved quality factor and spatial resolution for imaging X- or gamma-photons |
| 04/17/1991 | EP0422817A1 A digital X-ray image read apparatus with a correction function |
| 04/16/1991 | US5008915 Methods for forming a radiograph using slit radiography |
| 04/16/1991 | US5008034 Titanium activated hafnia and/or zirconia host phosphor containing neodymium |
| 04/09/1991 | US5006708 Method for generating radiation image signals |
| 03/27/1991 | EP0419224A2 Stimulable phosphor, method of making same, and use thereof |
| 03/26/1991 | US5003182 Phosphor, radiation image recording and reproducing method and radiation image storage panel employing the same |
| 03/26/1991 | US5003181 Method for recording and reproducing a radiation image, panel and phosphors for storing a radiation image |
| 03/26/1991 | US5003179 Full color upconversion display |
| 03/26/1991 | US5002178 Transport belt for conveying a stimulable phosphor sheet and having a conductive layer for preventing static charge on the sheet due to contact with the belt |
| 03/26/1991 | CA1282192C Method and apparatus for utilizing an electro-optic detector in a microtomography system |
| 03/21/1991 | WO1991003816A1 X-ray phosphor imaging screen and method of making same |
| 03/20/1991 | EP0417844A2 A method for recording an image of ionizing radiation |
| 03/12/1991 | US4999515 A phosphor of europium activeated alkaline earth metal halide to absorb radiation, detection of emitted light |
| 03/12/1991 | US4999505 Transparent radiation image storage panel |
| 02/26/1991 | US4996003 Titanium activated hafnia and/or zirconia host phosphor containing a selected rare earth |
| 02/19/1991 | US4994205 Composition containing a hafnia phosphor of enhanced luminescence |
| 02/13/1991 | EP0412730A2 An improved cassette and radiographic film combination |
| 02/12/1991 | US4992699 X-ray phosphor imaging screen and method of making same |
| 02/12/1991 | US4992664 Radiation image read-out, processing and reproducing methods |
| 02/12/1991 | US4992205 Titanium activated hafnia and/or zirconia host phosphor containing indium |
| 02/10/1991 | CA2021068A1 Cassette and radiographic film combination |
| 02/06/1991 | EP0411194A1 High-resolution image glates for recording with ionizing rays |
| 02/05/1991 | US4990282 Titanium activated hafnia and/or zirconia host phosphor containing scandium |
| 02/05/1991 | CA1279938C Cathode/converter |
| 01/29/1991 | US4988882 Medical imaging; positron emission tomography |
| 01/29/1991 | US4988881 Tin-activated lithium hafnate phosphor composition and X-ray intensifying screen |
| 01/29/1991 | US4988880 X-ray intensifying screen containing hafnia phosphor |
| 01/29/1991 | US4988873 Apparatus and method for scanning transparent phosphors |
| 01/22/1991 | US4987308 Cassette for stimulable phosphor sheet |
| 01/22/1991 | US4987304 Stimulating radiation |
| 01/16/1991 | EP0407890A2 Cassette with intensifying screens to be used with an X-ray film |
| 01/15/1991 | US4985633 Scintillator with alveolate structured substrate |
| 01/08/1991 | US4983848 Polyamide film over phosphor binder layer, reduced static, friction, wear resistance |
| 01/08/1991 | US4983847 Reduced afterglow |
| 01/02/1991 | EP0404941A1 Polymerized composition for obtaining luminescent and selective radiation-absorbent materials |
| 01/01/1991 | US4982098 Speed compensated intensifying screen for radiography |
| 12/27/1990 | EP0403802A2 X-ray image intensifier and method of manufacturing input screen |
| 12/25/1990 | US4980560 Crystal structure consists of hafnium oxide, zirconium oxide, titanium oxide, alkali metal oxide and eruopium oxide |