TOMY SEIKO CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B04B CENTRIFUGES 225

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6149571 Centrifuge having a rotor with convex surface matching concave surface of nut for securing rotor on drive shaftJan 25, 99Nov 21, 00[B04B]
6045494 Centrifugal separating method and centrifugal machineJul 08, 97Apr 04, 00[B04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5834303 Method and device for extraction and purification of DNAExpiredNov 13, 97Nov 10, 98[C12M]
5824224 Process and apparatus for the extraction and purification of DNAExpiredFeb 07, 97Oct 20, 98[B01D]
5645723 Process and apparatus for the extraction and purification of DNAExpiredJan 04, 96Jul 08, 97[B01D]
5466417 Sterilizer using high temperature steamExpiredNov 12, 93Nov 14, 95[B01B, G05B, G05D, A61L]
D347696 SterilizerExpiredDec 31, 91Jun 07, 94[]
D335930 CentrifugeExpiredJun 03, 91May 25, 93[]
4941867 Container rotor for a centrifugal separatorExpiredAug 04, 89Jul 17, 90[B04B]
D303147 Small type micro centrifugeExpiredMar 13, 87Aug 29, 89[]

Top Inventors for This Owner

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