Hydrostress AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A21B BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING 118
 
  
 
B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING 165
 
  
 
B28D WORKING STONE OR STONE-LIKE MATERIALS 121

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5645040 Cable saw machine for cutting concrete bodies, rocks or the likeDec 12, 95Jul 08, 97[A21B]
5186157 Guide and support structure for surface cutting apparatusJan 17, 92Feb 16, 93[B24B, B28D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5653509 Blockage-protected drive system with a centrifugal clutch, and sawing apparatus driven through said clutchExpiredOct 02, 95Aug 05, 97[F16D, E01C]
5515886 Method and apparatus for repairing a junction pipe connection to a main pipeExpiredDec 27, 93May 14, 96[F16L]
5201638 Hydraulic energy supply cartExpiredApr 08, 91Apr 13, 93[F04B]
5180209 Apparatus for cutting recessed grooves into concrete and rock materialExpiredOct 11, 91Jan 19, 93[E21B]
4964434 Dual control valve suitable for high pressure fluidsExpiredFeb 05, 90Oct 23, 90[F16K]
4932597 Concrete plate, panel, wall or flooring demolition apparatusExpiredDec 05, 88Jun 12, 90[B02C]
4923344 Coupling system for boring toolsExpiredDec 05, 88May 08, 90[F16B, B23C]
4572580 Mobile concrete or rock cutting apparatusExpiredJan 09, 84Feb 25, 86[E21C]
4557245 Concrete cutting or milling apparatus including a guide railExpiredJan 11, 84Dec 10, 85[B28D]

Top Inventors for This Owner

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