HERMANN BERSTORFF MASCHINENBAU GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 6119
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 339
 
  
 
B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS 225
 
  
 
B21B ROLLING OF METAL 131
 
  
 
B26D CUTTING; DETAILS COMMON TO MACHINES FOR SEVERING, e.g. BY CUTTING, PERFORATING, PUNCHING, STAMPING-OUT 136
 
  
 
B28C PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER 114
 
  
 
B30B PRESSES IN GENERAL; PRESSES NOT OTHERWISE PROVIDED FOR 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
5567370 Process for the production of TPE foam profiles for the building and automotive industriesJan 18, 95Oct 22, 96[B29C]
5490725 Melt-sealing device for extruders for the processing of thermoplastic polymers or rubberSep 28, 94Feb 13, 96[B28C, B29B]
5297866 Apparatus for producing a controllable uniform conveying pressure for processing highly viscous rubber or thermoplasticsSep 14, 92Mar 29, 94[B29B]
5188010 Arrangement for cutting thin-walled belts from a closed band of rubberDec 13, 91Feb 23, 93[B26D]
5147198 High performance extruder with a constant number of threads in the inlet and outlet regions of a transfer shearing sectionApr 29, 91Sep 15, 92[B29C, B01F]
5145352 Pin transfer extruderApr 29, 91Sep 08, 92[B29C, B01F]
5141426 Degassing extruderApr 29, 91Aug 25, 92[B29C, B01F]
5127741 High-performance extruderApr 29, 91Jul 07, 92[B29C]
5100312 Calender assemblyFeb 04, 91Mar 31, 92[B29C, B30B, B21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6531079 Gear extruder having gas vent portsExpiredFeb 07, 02Mar 11, 03[B29B]
6361200 Gear extruder having gas vent portsExpiredNov 13, 00Mar 26, 02[B01F]
6213748 Multiple extrusion head for the production of profiles, in particular for tire productionExpiredDec 23, 98Apr 10, 01[B29C]
6158883 Gear extruder having gas vent portsExpiredJan 29, 98Dec 12, 00[B01F]
5911783 Adjusting device for the rolls of a calendarExpiredJun 16, 97Jun 15, 99[B21B]
5587186 Apparatus for pelletizing plasticsExpiredSep 08, 94Dec 24, 96[B29B]
5463946 Continuously operating material press with lubricating film for reducing frictionExpiredJun 14, 94Nov 07, 95[B30B]
5464363 Polishing stack for thermoplastic films or sheetsExpiredFeb 07, 94Nov 07, 95[B24B]
5440104 Process for a uniform heating, pasteurization and sterilization of products by means of microwaveExpiredApr 05, 94Aug 08, 95[H05B]
5358693 Method and apparatus for the single-stage continuous production of a rubber base compound and a rubber end compoundExpiredAug 18, 93Oct 25, 94[C08F, B28C, B01F, A21C]
5324183 Apparatus for producing a controllable, uniform conveying pressure for processing highly viscous rubber or thermoplasticsExpiredMar 01, 93Jun 28, 94[F04C]
5320036 Continuously operating material pressExpiredOct 05, 93Jun 14, 94[B30B]
5302635 Method and arrangement for the single-stage continuous production of a rubber base compound and a rubber end compoundExpiredDec 13, 91Apr 12, 94[C08K]
5292240 Pelletizer with cutting knife controlExpiredApr 29, 93Mar 08, 94[B28B, B29B]
5273419 Apparatus for producing monodisperse powder from rubber or rubber articlesExpiredAug 28, 92Dec 28, 93[B29C]
5262111 Process for the continuous production of rubber compounds in a twin-screw extruderExpiredSep 09, 92Nov 16, 93[B29C]
5244373 Extruder for poorly miscible extrudatesExpiredDec 13, 91Sep 14, 93[B29C]
5223071 Apparatus for producing chip and fiberboard webs of uniform thicknessExpiredJul 12, 91Jun 29, 93[G05G, B30B]
5221504 Process and apparatus for optimal operation of a high-speed extruderExpiredDec 13, 91Jun 22, 93[B29C]
5214881 Apparatus for producing driving beltsExpiredAug 03, 92Jun 01, 93[B24B]

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