N.V. OPTISCHE INDUSTRIE "DE OUDE DELFT"

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A61B DIAGNOSIS; SURGERY; IDENTIFICATION 1239
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5669389 Endoscopic probeFeb 22, 93Sep 23, 97[A61B]
RE30596 Image intensifier tube deviceSep 15, 77Apr 28, 81[H01J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5631945 Slit radiography apparatusExpiredJul 31, 96May 20, 97[G21K]
5368513 Method for manufacturing a correction mask for an image intensifier tube of the proximity-focus type having an oblong cathode and anode, and also a method for correcting an image intensifier tubeExpiredApr 15, 93Nov 29, 94[H01J]
5349489 Integrated semiconductor circuit with polarity reversal protectionExpiredDec 12, 91Sep 20, 94[H02H]
5341219 Device and method for controlling the contrast in an image observation system provided with an MCP image intensifierExpiredNov 16, 92Aug 23, 94[H04N]
5305367 Device for slit radiography with image equalizationExpiredMay 09, 91Apr 19, 94[G21K]
5210402 Detection system for a radiation profile lineExpiredFeb 14, 90May 11, 93[H01J]
5210782 Method and apparatus for split radiographyExpiredAug 28, 91May 11, 93[G21K]
5182485 Ultrasonic transducer comprising at least one row of ultrasonic elementsExpiredNov 19, 90Jan 26, 93[H01L]
5164582 Method for operating an image intensifier tube by generating high frequency alternating electric field between cathode and channel plate thereofExpiredDec 11, 90Nov 17, 92[H01J]
5164977 Process and apparatus for effecting slit radiographyExpiredMar 05, 91Nov 17, 92[G21K]
5134642 Slit radiography device provided with absorption elements, and procedure for producing absorption elementsExpiredOct 31, 90Jul 28, 92[G21K]
5079427 Dosimeter for ionizing radiationExpiredDec 28, 90Jan 07, 92[G01T]
5062129 Device for slit radiography with image equalizationExpiredNov 01, 89Oct 29, 91[G21K]
5058149 Equipment for slit radiographyExpiredFeb 23, 90Oct 15, 91[G21K]
5042303 Apparatus for ultrasound detectionExpiredApr 16, 90Aug 27, 91[G01N]
5044007 Improved slit radiography assembly having an x-ray source of variable hardness synchronized to varying slit heightExpiredJan 30, 90Aug 27, 91[G21K]
5013925 Collimating mark deviceExpiredOct 23, 89May 07, 91[G02B]
5008915 Methods for forming a radiograph using slit radiographyExpiredFeb 03, 89Apr 16, 91[G01N]
4984258 Apparatus for slit radiography comprising discrete, controllable attenuation elements coacting with a slit diaphragmExpiredNov 25, 87Jan 08, 91[G21K]
4956557 Dosimeter for ionizing radiationExpiredFeb 15, 89Sep 11, 90[G21K, G01T]

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