Tokyo Kogaku Kikai Kabushiki Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A61B DIAGNOSIS; SURGERY; IDENTIFICATION 1239

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5165408 Gas jet shooting device for use with a non-contact tonometerJul 18, 91Nov 24, 92[A61B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5048526 Gas jet shooting device for use with a non-contact tonometerExpiredAug 19, 88Sep 17, 91[A61B]
5042484 Air puff type tonometerExpiredOct 13, 88Aug 27, 91[A61B]
5015081 Binocular microscopeExpiredDec 14, 89May 14, 91[G02B]
4996990 Air-puff tonometerExpiredAug 12, 88Mar 05, 91[A61B]
4986653 Light wave range finderExpiredAug 05, 88Jan 22, 91[G01C]
4984890 Method and an apparatus for aligning first and second objects with each otherExpiredDec 20, 89Jan 15, 91[G01B]
4973153 Method and apparatus for finding rangeExpiredJul 28, 88Nov 27, 90[G01B]
4968130 Laser beam scanning type ophthalmological instrumentExpiredOct 26, 88Nov 06, 90[A61B]
4960327 Optical system in a lasar scanning eye fundus cameraExpiredJun 27, 88Oct 02, 90[A61B]
4947849 Non-contact type tonometerExpiredJul 20, 87Aug 14, 90[A61B]
4944303 Noncontact type tonometerExpiredDec 24, 87Jul 31, 90[A61B]
4941744 Integrated-photocircuit interferometerExpiredJul 06, 88Jul 17, 90[G01B]
4934812 Light detectorExpiredFeb 24, 87Jun 19, 90[G01C, G01B]
4932774 Illuminating system of ophthalmological instrumentExpiredFeb 24, 88Jun 12, 90[A61B]
4916297 Code readerExpiredJul 12, 89Apr 10, 90[G06F]
4909629 Light interferometerExpiredJul 06, 88Mar 20, 90[G01B]
4902133 Method and an apparatus for aligning first and second objects with each otherExpiredSep 30, 88Feb 20, 90[G01B]
4872460 Noncontact type tonometerExpiredAug 19, 87Oct 10, 89[A61B]
4859051 Eye testing apparatusExpiredDec 24, 87Aug 22, 89[A61B]
4858157 Apparatus and method for determining the coordinates of a three-dimensional objectExpiredMar 11, 86Aug 15, 89[G01C, G01B, G06K]

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