Nihon Cement Co., Ltd.

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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 365
 
  
 
B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE 156

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5665663 Method for manufacturing oxide ceramic sintered bodiesNov 06, 95Sep 09, 97[C04B]
5492872 Ceramic mirrors and method of manufacturing sameAug 01, 94Feb 20, 96[C04B, B29D]
5181961 Cement compositionAug 29, 91Jan 26, 93[C04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5834106 Ceramic substrate and producing process thereof, and a suction carrier for wafers using a ceramic wafer-chucking substrateExpiredNov 28, 94Nov 10, 98[C04B, B21F, B32B]
5731251 Oxide ceramic sintered bodiesExpiredNov 27, 96Mar 24, 98[C04B]
5700414 Heat-insulating panel serving as concrete form and method of manufacturing the sameExpiredNov 03, 95Dec 23, 97[B29C]
5660775 Method of treating waste magnetic tapes and method of manufacturing building material boards using the treated materialExpiredAug 28, 95Aug 26, 97[B29C]
5650366 Ceramic mirrorsExpiredJan 25, 96Jul 22, 97[C04B]
5631075 Heat-insulating panel serving as concrete formExpiredOct 31, 94May 20, 97[E04B, B32B]
5547505 Compositions for low heat cementsExpiredMay 25, 95Aug 20, 96[C04B]
5423634 Hydraulic composition and process for producing concrete pile using the sameExpiredMar 19, 93Jun 13, 95[C04B, E03D]
5302329 Process for producing .beta.-sialon based sintered bodiesExpiredOct 21, 91Apr 12, 94[C04B]
5209613 Diamond tool and method of producing the sameExpiredOct 07, 91May 11, 93[B23B]
4984675 Article sorting deviceExpiredSep 27, 89Jan 15, 91[B65G]
4941561 Article sorting deviceExpiredAug 28, 89Jul 17, 90[B65G]
4895814 Process for producing alumina silica sintered ceramics having improved high-temperature strengthExpiredJun 24, 87Jan 23, 90[C04B]
4818511 Process and apparatus for producing non-oxide compoundsExpiredJul 22, 87Apr 04, 89[C01B, B01J]
4617059 Demolition agent for brittle materialsExpiredApr 11, 85Oct 14, 86[B02C]
4547223 Cement-shrinkage-reducing agent and cement compositionExpiredMay 04, 82Oct 15, 85[C04B]
4483620 Regenerative heating and melting device for recovered asphalt concrete rubbleExpiredNov 29, 83Nov 20, 84[B28C]
4263264 Method of abating nitrogen oxides in combustion waste gasesExpiredFeb 26, 80Apr 21, 81[B01D]

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