DIFCO LABORATORIES INCORPORATED

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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 4202
 
  
 
C12M APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY 247
 
  
 
C12Q MEASURING OR TESTING PROCESSES INVOLVING ENZYMES OR MICRO-ORGANISMS 2123

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6670174 Culture dish package and method of makingApr 23, 92Dec 30, 03[C12M]
5843699 Rapid microorganism detection methodApr 08, 97Dec 01, 98[C12Q, G01N]
5411893 Dry slide for diagnostic testsMar 15, 93May 02, 95[G01N]
5393661 Three reagent gram staining method and kitDec 22, 93Feb 28, 95[C12Q]
5340747 Diagnostic microbiological testing apparatus and methodJun 04, 93Aug 23, 94[C12M, G01N]
5188965 Reagent source for chemiluminescent reactions, test kit, and method for useApr 09, 92Feb 23, 93[G01N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5827680 Three reagent gram staining method and kitExpiredJun 12, 96Oct 27, 98[C12Q]
5759847 System and apparatus for automatically transferring mediaExpiredJul 14, 95Jun 02, 98[C12M]
5223402 Method of detecting microbes utilizing chemiluminescent compoundExpiredSep 30, 91Jun 29, 93[C09K, C12Q, C07D, C07C]
5164301 Process and kit for detecting microbial metabolismExpiredJun 22, 90Nov 17, 92[C12Q]
5159197 Luminescence test and exposure apparatusExpiredAug 14, 90Oct 27, 92[G01N]
5096668 Diagnostic test slideExpiredApr 26, 90Mar 17, 92[G01N]
5063090 Lecithin as a wettability enhancing coating for plasticExpiredJun 29, 90Nov 05, 91[B05D]
4988302 Culture media packageExpiredJun 08, 89Jan 29, 91[C12M]
4968625 Centrifrugation vial and cluster trayExpiredMay 09, 89Nov 06, 90[C12M]
4829006 Centrifugation vial and cluster trayExpiredFeb 01, 88May 09, 89[C12M]
4701412 Method and apparatus for preventing cross-examination of biochemical test wells in a microtiter test plateExpiredMar 03, 86Oct 20, 87[C12Q]
4680269 Method and apparatus for preventing cross-contamination of biochemical test wells in a microtiter test plateExpiredApr 15, 85Jul 14, 87[C12M]
D283921 Blood collectorExpiredJun 27, 83May 20, 86[]

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