Sandvik Rock Tools, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 591
 
  
 
B27C PLANING, DRILLING, MILLING, TURNING, OR UNIVERSAL MACHINES 211
 
  
 
A01G HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS, OR SEAWEED; FORESTRY; WATERING 131
 
  
 
E21C MINING OR QUARRYING121
 
  
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 165

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6546977 Stump grinding apparatusJan 29, 02Apr 15, 03[B27C, A01G]
6382277 Stump grinding wheel and cutting assemblies thereforApr 19, 01May 07, 02[B27C, H01G]
6270165 Cutting tool for breaking hard material, and a cutting cap thereforOct 22, 99Aug 07, 01[E21C]
5996715 Mine roof drill bit and cutting insert thereforNov 02, 98Dec 07, 99[E21B]
5829540 Mine roof drill bit and cutting insert thereforJul 28, 93Nov 03, 98[E21B]
5375672 Mine roof drill bit and cutting insert thereforOct 22, 92Dec 27, 94[E21B]
5301763 Apparatus for drilling holes in mine roofs and a roof drill bit for use thereinMar 02, 93Apr 12, 94[E21B]
5220967 Drill and self-centering cutter insert thereforSep 23, 91Jun 22, 93[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6702393 Rotatable cutting bit and retainer sleeve thereforExpiredMay 23, 01Mar 09, 04[E21C]
6634444 Drill bit for trenchless drillingExpiredJan 30, 02Oct 21, 03[E21B]
6601620 Stump grinding bit and tip thereforExpiredFeb 04, 02Aug 05, 03[B27C, A01G, B27G]
6454360 Ground-working tools for use in power rakesExpiredOct 10, 00Sep 24, 02[E21C]
6435434 Striker bar for disintegrating breakable materialsExpiredOct 02, 00Aug 20, 02[B02C]
5768981 Sterilizable steam heating deviceExpiredApr 16, 97Jun 23, 98[A23L, A47J, A23C]
5407021 Down-the-hole hammer drill having reverse circulationExpiredApr 08, 93Apr 18, 95[E21B]
5163523 Screw thread structure for percussion drill driver sub and caseExpiredSep 27, 91Nov 17, 92[F16B, E21B]
5090500 Replaceable wear sleeve for percussion drillExpiredNov 30, 90Feb 25, 92[E21B]
5060740 Screw thread couplingExpiredMay 29, 90Oct 29, 91[F16L, F16B, E21B]
5056611 Screw thread structureExpiredMay 29, 90Oct 15, 91[F16B, E21B]
4924948 Shock absorbing bit retaining ringExpiredNov 15, 88May 15, 90[B23B]
4923018 Percussion drillExpiredMar 02, 89May 08, 90[B25D]
4878550 Pilot-valve-controlled percussion drilling toolExpiredJul 15, 88Nov 07, 89[F01L, F21B]
4867015 Rock drilling bit and a method of producing the sameExpiredApr 25, 88Sep 19, 89[B21K, F21B]
4862976 Spline drive for percussion drilling toolExpiredNov 22, 88Sep 05, 89[E21B]
4799844 Elliptical thread designExpiredJan 11, 88Jan 24, 89[F16B]
4761191 Method of forming closely sized openingsExpiredDec 23, 86Aug 02, 88[B21K, C21D]
4756373 Rock drilling bit and a method of producing the sameExpiredDec 23, 86Jul 12, 88[E21B]
4745983 Bit seat protector device for drilling systems or the likeExpiredDec 17, 86May 24, 88[E21B]

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