HYGRAMA AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01B MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES 225
 
  
 
B05B SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 163
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS149
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6751520 Intrinsically safe microprocessor controlled pressure regulatorJan 18, 02Jun 15, 04[B05B, G05B, G06F]
5318271 Piezo valveDec 11, 92Jun 07, 94[F16K]
5245910 Rodless cylinderMar 17, 92Sep 21, 93[F01B, F16J]
5241897 Pressurized medium cylinderApr 15, 92Sep 07, 93[F01B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2004/0035,472 Valve arrangement having electromagnetic actuationAbandonedApr 08, 03Feb 26, 04[F15B]
6679162 Working cylinder, switch valve and pressure-actuated working unitExpiredMay 18, 01Jan 20, 04[F01B]
2003/0230,917 Contour-adjustable seat and modular support unitAbandonedJun 16, 03Dec 18, 03[A47C]
6276257 Working cylinder, switch valve and pressure-actuated working unitExpiredAug 04, 99Aug 21, 01[F15B, F01B]
6186175 Rocker valve with pneumatic pre-controlExpiredFeb 04, 99Feb 13, 01[F15B]
6101920 Pneumatic or hydraulic cylinder with piston position detector mounted in longitudinal groove in cylinder tube surfaceExpiredApr 08, 98Aug 15, 00[F01B]
6000676 MicrovalveExpiredJan 28, 98Dec 14, 99[F16K]
5924443 Device for limiting the prestress of a control springExpiredJun 26, 97Jul 20, 99[G05D]
5862828 Oscillating valve for a double acting operating cylinderExpiredJul 09, 97Jan 26, 99[F15B]
5823088 Pneumatic actuating arrangementExpiredApr 28, 97Oct 20, 98[F15B, F01B]
5513674 Sealing arrangementExpiredMay 03, 94May 07, 96[F15B, F16J]
5343894 Piezo valveExpiredSep 29, 92Sep 06, 94[F15B]
5138935 Arrangement for attaching a rail to a piston-cylinder type control deviceExpiredFeb 06, 91Aug 18, 92[F01B]
5127285 Threaded spindle-nut drive assembly with vibration reducing support nut arrangementExpiredAug 01, 90Jul 07, 92[G05G, F16H]
5111913 Braking arrangement in operating devices for linear motionExpiredJan 30, 91May 12, 92[F16D]
5079472 Piezoelectric bending transducer and the use thereofExpiredJun 22, 90Jan 07, 92[H01L]
5022499 Axially slit pressure cylinder with brake meansExpiredFeb 28, 90Jun 11, 91[B65H]
4960037 Apparatus in pressurized fluid cylinders not having piston rodsExpiredFeb 22, 89Oct 02, 90[F01B]
4926982 Braking device in an arrangement for linear movementExpiredDec 15, 88May 22, 90[F15B]
4920817 Ball screw with screw cage in raceway ring of nutExpiredJul 26, 88May 01, 90[F16H]

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