Maschinenfabrik Koppern GmbH & Co. KG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 254
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 134
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 151
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7854406 Air separator for comminuted materialsSep 09, 08Dec 21, 10[B02C]
6103159 Method for preventing material to be briquetted from sticking to a roll surfaceJul 17, 98Aug 15, 00[B29C]
6086003 Roll press for crushing abrasive materialsMay 26, 98Jul 11, 00[B23P]
5755033 Method of making a crushing rollMay 03, 95May 26, 98[B23P]
5666638 Process for producing sponge iron briquettes from fine oreAug 07, 95Sep 09, 97[B22F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0284,840 ROLLER PRESSAbandonedSep 29, 11Oct 31, 13[B02C, B21D]
6652616 Powder metallurgical method for in-situ production of a wear-resistant composite materialExpiredMay 28, 02Nov 25, 03[C22C]
5833735 Method of making steelExpiredMar 18, 96Nov 10, 98[C21B]
5630202 Method for making sponge iron briquettes from fine oreExpiredJul 07, 95May 13, 97[B22F]
5547357 Apparatus for hot-briquetting iron spongeExpiredMay 20, 94Aug 20, 96[B29C, B22F]
5376161 Steel making process including transporting spong iron briquettesExpiredJul 20, 93Dec 27, 94[C21B]
5271319 Roll press with deaeration apparatusExpiredAug 04, 92Dec 21, 93[B30B]
5215765 Iron sponge briquetting pressExpiredJun 27, 91Jun 01, 93[B28B]
4925382 Roller press for compacting fine-grained salts into sheetsExpiredJul 22, 88May 15, 90[B28B, B30B]
4439384 Method for manufacturing graules from potassium chloride finesExpiredDec 16, 81Mar 27, 84[B01J]
4395944 Two roll pressExpiredOct 20, 81Aug 02, 83[B30B]
4368165 Roll press and method of regulation of the throughput of a roll pressExpiredDec 12, 80Jan 11, 83[B29C]
4341349 Apparatus for the damping of bulk materialExpiredJul 01, 80Jul 27, 82[B05B, B65G]
4337023 Roller press for compacting and briquetting of bulk materialExpiredMay 08, 81Jun 29, 82[B29C]

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