Nordberg, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 134

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6550707 Gyratory crusher dust seal systemJan 05, 01Apr 22, 03[B02C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7195186 Wear protection for a rock crushing systemExpiredJan 11, 01Mar 27, 07[B02C]
6772970 Gyratory crusher spider pistonExpiredJan 11, 01Aug 10, 04[B02C]
6565025 Gyratory crusher bearing retainer systemExpiredJan 05, 01May 20, 03[B02C]
6536693 Rock crusher sealExpiredJan 05, 01Mar 25, 03[B02C]
6536694 Gyratory crusher spider guardsExpiredJan 05, 01Mar 25, 03[B02C]
6520438 Gyratory crusher mainshaftExpiredJan 05, 01Feb 18, 03[B02C]
5850978 Self tightening mantle retention assembly for gyratory conical crushersExpiredJun 28, 96Dec 22, 98[B02C]
5820045 Conical Crusher having a single piece outer crushing memberExpiredJun 05, 96Oct 13, 98[B02C]
5806772 Conical gyratory grinding and crushing apparatusExpiredNov 22, 96Sep 15, 98[B02C]
5799885 High reduction ratio crushing in conical/gyratory crushersExpiredNov 22, 96Sep 01, 98[B02C]
5769339 Conical gyratory mill for fine or regrindingExpiredNov 22, 96Jun 23, 98[B02C]
5762274 Protection arrangement for a hopper seal on a fluid flushed conical crusherExpiredAug 01, 96Jun 09, 98[B02C]
5738288 Conical crusher having a single piece inner crushing memberExpiredJun 05, 96Apr 14, 98[B02C]
5732895 Conical crusher having fluid bellow support assembliesExpiredJun 05, 96Mar 31, 98[B02C]
5602945 Thrust bearing for use in a conical crusherExpiredMar 21, 96Feb 11, 97[F16C]
5372318 Retention and positioning device for high energy absorbing padsExpiredJun 08, 93Dec 13, 94[B02C]
5110057 Method of high performance jaw crushingExpiredDec 06, 90May 05, 92[B02C]
5092529 Apparatus for manipulation of impactor hammersExpiredOct 03, 90Mar 03, 92[B02C]
5042732 Apparatus for high-yield low-waste conical crushingExpiredMay 31, 90Aug 27, 91[B02C]
5031843 Crushing coral limestone using water additionExpiredApr 12, 90Jul 16, 91[B02C]

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