Supfina Maschinenfabrik Hentzen GmbH & Co. KG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING 165

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5674112 Process and apparatus for centerless superfinishing of rollersJul 20, 95Oct 07, 97[B24B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5447463 Apparatus for microfinishingExpiredJun 16, 93Sep 05, 95[B24B]
5060423 Automatic control centerless finishing device for honing external cylindrical surfacesExpiredJun 21, 89Oct 29, 91[B24B]
4827677 Method for grinding plane-parallel circular annular faces on disk-shaped workpiecesExpiredDec 11, 87May 09, 89[B24B]
4811523 Apparatus for fine machining of plane surfaces of disk-shaped workpieces having an unmachined bearing side and a slight wall thicknessExpiredApr 21, 86Mar 14, 89[B24B]
4724685 Flat-bed knitting machineExpiredSep 11, 86Feb 16, 88[D04B]
4686794 Stone guide for a superfinishing machineExpiredApr 05, 85Aug 18, 87[B24B]
4573289 Apparatus for superfinishing bearing rollersExpiredJun 06, 83Mar 04, 86[B24B]
4222203 Machining device and methodExpiredMar 27, 78Sep 16, 80[B24B]

Top Inventors for This Owner

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