Sunds Defibrator Aktiebolag

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B65B MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING 163

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE31944 Method and apparatus for transforming by pressing voluminous material into balesSep 02, 80Jul 16, 85[B65B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5067660 Stress regulator for pulp grinding apparatus and methodExpiredOct 15, 90Nov 26, 91[B02C]
5042726 Apparatus and method for conjoint adjustment of both the inner and outer grinding spaces of a pulp defibrating apparatusExpiredNov 13, 89Aug 27, 91[B02C]
5034099 Apparatus for the manufacture of fiber pulp using a preheater, defibrator and horizontal separatorExpiredAug 23, 89Jul 23, 91[D21C]
4955217 Wire coiling arrangementExpiredJan 17, 90Sep 11, 90[B21F]
4955549 Apparatus for treatment of fibre suspensionsExpiredJan 23, 89Sep 11, 90[B02C]
4953796 Refiner segmentExpiredJun 27, 89Sep 04, 90[B02C]
4954221 Apparatus for feeding lignocellulose-containing material through a steam screen into a refinerExpiredNov 19, 84Sep 04, 90[D21B]
4948542 Method and device for manufacturing fibre boardExpiredApr 05, 89Aug 14, 90[G01G]
4921650 Method and apparatus for liquid treatment of pulpExpiredJul 16, 87May 01, 90[D01G, D04H]
4900400 Arrangement for liquid treatment of pulpExpiredSep 14, 88Feb 13, 90[D21C, B01D]
4890796 Combined hydrostatic/hydrodynamic bearing system for grinding apparatusExpiredOct 21, 88Jan 02, 90[B02C]
4878997 Method and apparatus for manufacturing fibre pulpExpiredOct 02, 84Nov 07, 89[D21B]
4861433 Dewatering press with perforated metal outer shell and resilient elastic mounting meansExpiredMar 21, 89Aug 29, 89[D21F]
4831713 Arrangement for removing wrapping wire from balesExpiredJun 08, 88May 23, 89[B26D]
4808310 Apparatus for liquid treatment of pulp with vapor separationExpiredNov 13, 87Feb 28, 89[D21C]
4801099 Combined hydrostatic/hydrodynamic bearing system for grinding apparatusExpiredSep 05, 84Jan 31, 89[B02C]
4789429 Method of making mechanical pulpExpiredMay 28, 87Dec 06, 88[D21B, D21K, D21D]
4772358 Method for making pulpExpiredMay 18, 87Sep 20, 88[D21B, B02C]
4737238 Method of processing waste paper with white water and aluminum recycle to papermillExpiredApr 23, 87Apr 12, 88[D21B, D21H, D21C]
4734160 Method of two-stage peroxide bleaching of mechanical or semi-mechanical pulpExpiredJan 13, 86Mar 29, 88[D21C]

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