L.H. Carbide Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1790
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 777
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 650
 
  
 
G01G WEIGHING 226
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 2445
 
  
 
B26D CUTTING; DETAILS COMMON TO MACHINES FOR SEVERING, e.g. BY CUTTING, PERFORATING, PUNCHING, STAMPING-OUT 136
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9685264 Die assembly and method for manufacturing wound motor laminated articleOct 18, 13Jun 20, 17[H02K, H01F]
9479034 Continuously formed annular laminated article and method for its manufactureJun 13, 14Oct 25, 16[H02K, H01F]
9099897 Method for connecting end sections of an annular laminated article and articles made therefromSep 12, 12Aug 04, 15[H02K, B23P]
8786158 Continuously formed annular laminated article and method for its manufactureAug 18, 11Jul 22, 14[H02K]
7676906 Method for manufacturing lamina stacks from a plurality of separate strips of stock materialOct 26, 07Mar 16, 10[H01F]
7337531 Die assembly and method for manufacturing lamina stacks from a plurality of separate strips of stock materialOct 06, 04Mar 04, 08[H01F]
7062841 Method of manufacturing a formable laminated stack in a progressive die assembly having a chokeOct 08, 02Jun 20, 06[H01F]
6745458 Laminated magnetic core and method for makingDec 13, 01Jun 08, 04[H02K]
6742239 Progressive stamping die assembly having transversely movable die station and method of manufacturing a stack of laminae therewithOct 01, 02Jun 01, 04[H01F]
6636137 Ignition coil assemblyNov 09, 00Oct 21, 03[H01F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0139,067 DIE ASSEMBLY AND METHOD FOR MANUFACTURING WOUND MOTOR LAMINATED ARTICLEAbandonedOct 17, 13May 22, 14[H02K]
7600312 Die assembly for manufacturing lamina stacks that include formed featuresExpiredJul 12, 05Oct 13, 09[B26D, H02K, B23P]
6984913 Lamination stack with center interlockExpiredDec 18, 00Jan 10, 06[H02K]
6877214 Method of manufacturing a stack of laminationsExpiredNov 05, 02Apr 12, 05[H01F]
6725756 Two-piece metal punch constructionExpiredOct 23, 01Apr 27, 04[B26F]
6530142 Dual action indexing system and method for a die assemblyExpiredJan 04, 01Mar 11, 03[H01F]
6237214 Apparatus for manufacturing laminated parts with center interlockExpiredAug 05, 98May 29, 01[H02K]
6192575 Dual action indexing system and method for a die assemblyExpiredDec 24, 98Feb 27, 01[H01F]
5960533 Apparatus for manufacture of laminated partsExpiredJan 30, 98Oct 05, 99[B23P]
5918359 Apparatus for manufacturing an interlocked core spaced for anneal penetrationExpiredJun 20, 94Jul 06, 99[H02K]
5881450 Dual action indexing system and method for a die assemblyExpiredDec 05, 96Mar 16, 99[H01F]
5809638 Method for manufacturing laminated parts with center interlockExpiredOct 26, 92Sep 22, 98[H02K]
5550327 Coreweighing system for closed-loop stock gauging controlExpiredNov 09, 94Aug 27, 96[B23P, G01G]
5087849 Laminated parts and a method for manufacture thereofExpiredMar 22, 88Feb 11, 92[H02K]
4738020 Method for manufacture of laminated partsExpiredApr 17, 86Apr 19, 88[H02K]
4619028 Apparatus for manufacture of laminated partsExpiredMar 25, 83Oct 28, 86[H02K]

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