Ringsdorff-Werke GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C30B SINGLE-CRYSTAL GROWTH 155
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5372090 Multipart support crucible and method for producing the sameMay 12, 93Dec 13, 94[C30B]
5083864 Graphite tube furnace with stationary specimen support for atomic absorption spectoscopyFeb 14, 91Jan 28, 92[G01N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4971438 Graphite tube furnace with specimen support for atomic absorption spectroscopyExpiredMar 03, 89Nov 20, 90[G01N]
4946278 Graphite tube furnace with specimen support for atomic absorption spectroscopyExpiredJun 28, 89Aug 07, 90[G01N]
4851189 Method of manufacturing cams by powder metallurgyExpiredAug 17, 88Jul 25, 89[B22F]
4849086 Electrode for electrochemical processesExpiredDec 02, 87Jul 18, 89[C25B]
4726678 Receptacle for flameless atomic absorption spectroscopyExpiredSep 26, 86Feb 23, 88[G01N]
4349384 Method for the manufacture of segments for commutatorsExpiredJun 27, 80Sep 14, 82[B22F]

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