CHAMPION SPARK PLUG COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 167

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5147833 Alumina-zirconia ceramicApr 05, 91Sep 15, 92[C04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D308434 Outdoor display cabinetExpiredDec 29, 86Jun 05, 90[]
4919868 Production and sintering of reaction bonded silicon nitride composites containing silicon carbide whiskers or silicon nitride powdersExpiredMar 31, 88Apr 24, 90[C04B]
D305732 ContainerExpiredJul 08, 86Jan 30, 90[]
4887795 Open-celled, electrically conductive ceramic networkExpiredMay 20, 86Dec 19, 89[H01B]
D304684 ContainerExpiredJul 08, 86Nov 21, 89[]
D304685 ContainerExpiredJul 08, 86Nov 21, 89[]
4848213 Reciprocating piston compressor with offset cylinderExpiredJan 11, 88Jul 18, 89[F16J]
4826462 Method for manufacturing a spark plug electrodeExpiredAug 19, 88May 02, 89[H01T]
4807747 Package structure for spark plugsExpiredApr 19, 88Feb 28, 89[B65D]
4726634 Outdoor display cabinetExpiredDec 29, 86Feb 23, 88[A47B, B65D]
4716874 Control for spark ignited internal combustion engineExpiredSep 27, 85Jan 05, 88[F02P]
4695759 Method for producing a composite center electrode and an electrodeExpiredOct 29, 81Sep 22, 87[H01T]
4684352 Method for producing a composite spark plug center electrodeExpiredJan 13, 86Aug 04, 87[H01T]
4655984 Method of and apparatus for isostatically pressing a body from particulate materialExpiredOct 15, 84Apr 07, 87[B28B]
4643688 Method for assembling a spark plugExpiredNov 01, 84Feb 17, 87[H01T]
4584977 Low engine oil sensing switchExpiredApr 01, 85Apr 29, 86[F01M]
4568855 Spark plugExpiredMar 14, 83Feb 04, 86[H01T]
4526551 Production of electrodesExpiredNov 02, 83Jul 02, 85[H01T]
4522170 Low engine oil sensing methodExpiredApr 30, 84Jun 11, 85[F02B]
4511524 Carbon resistor and method for producing sameExpiredNov 08, 82Apr 16, 85[H01C]

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Top Inventors for This Owner

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