OY TAMPELLA AB

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 1133

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5128030 Device for separating solids from suspensionAug 09, 91Jul 07, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5175436 Method of producing high-energy electron curtains with high performanceExpiredJun 27, 91Dec 29, 92[H01J]
5139097 Rock drilling apparatusExpiredMar 26, 90Aug 18, 92[E21B]
5129470 Drill hole filling method and apparatusExpiredOct 10, 90Jul 14, 92[E21B]
5125584 Method and apparatus for removing impurities from paper pulp in pulpersExpiredAug 21, 90Jun 30, 92[B02C]
5121802 Method and arrangement for controlling a rock drilling apparatusExpiredMar 26, 90Jun 16, 92[B23Q, E21C]
5110417 Extended press zone with shallow hydrodynamic pocketExpiredDec 17, 90May 05, 92[D21F]
5102532 Method for controlling pressurized screening devices and pressurized screening deviceExpiredJun 05, 90Apr 07, 92[B07B, D21D]
5064125 PulperExpiredJun 05, 90Nov 12, 91[B02C]
5062921 Method for regulating the feed or combustion conditions of concentrated waste liquors in a soda recovery unitExpiredMar 29, 90Nov 05, 91[D21C]
5050283 Arrangement for handling drill rods in a rock drilling unit or the likeExpiredMar 19, 90Sep 24, 91[B25B]
5041213 Pressurized screening deviceExpiredJun 05, 90Aug 20, 91[B07B, D21D]
5009736 Method of and an arrangement for gluing a web to a core in a reeling deviceExpiredNov 06, 89Apr 23, 91[B32B]
5002743 Process for the removal of sulfur dioxide from hot flue gasesExpiredOct 31, 89Mar 26, 91[C01B, B01J]
5000271 Feeding device for a rock drilling machineExpiredJul 07, 89Mar 19, 91[E21B]
4998333 Roll for the press in a paper machine or the likeExpiredMay 24, 89Mar 12, 91[B21B]
4994158 Method for analyzing a gas mixtureExpiredMay 20, 88Feb 19, 91[G01N]
4985081 Method of producing cement or concreteExpiredFeb 28, 90Jan 15, 91[C04B]
4979575 Method of drilling a hole-in a rockExpiredJun 01, 89Dec 25, 90[B21J]
4974686 Apparatus for handling a drilling equipmentExpiredJun 30, 89Dec 04, 90[E21B]
4974689 Drill hole filling method and apparatusExpiredNov 10, 88Dec 04, 90[E21B]

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