JOEL LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
G21K TECHNIQUES FOR HANDLING PARTICLES OR ELECTROMAGNETIC RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA- OR X-RAY MICROSCOPES 145
 
  
 
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
6946663 Method of fabricating multipole lens, multipole lens, and charged-particle beam instrument equipped therewithMar 26, 04Sep 20, 05[H01J, G21K]
5876668 Automatic biochemical analyzerJul 30, 97Mar 02, 99[G01N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5206593 Real-time control system for NMR spectrometerExpiredOct 31, 90Apr 27, 93[G01R]
5067702 Dispenser for dispensing sheets of an alternating first and second kind from a stackExpiredMay 25, 90Nov 26, 91[B65H]
5065027 Electromagnetic lensExpiredNov 15, 90Nov 12, 91[H01J]
4994745 Electron spin resonance spectroscopyExpiredJan 23, 90Feb 19, 91[G01R]
4990778 Scanning electron microscopeExpiredSep 28, 89Feb 05, 91[H01J]
4880977 Analytical electron microscopeExpiredMay 23, 88Nov 14, 89[H01J]
4866267 Double-focusing mass spectrometer having Wien filter and MS/MS instrument using such spectrometerExpiredApr 12, 88Sep 12, 89[H01J]
4645928 Sweeping method for superimposed-field mass spectrometerExpiredJun 10, 85Feb 24, 87[H01J]
4419581 Magnetic objective lens for use in a scanning electron microscopeExpiredJan 11, 82Dec 06, 83[H01J]

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