NIPPON TUNGSTEN CO., LTD.
Patent Owner
Stats
- 18 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Sep 26, 2017 most recent publication
Details
- 18 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 411 Total Citation Count
- Apr 18, 1978 Earliest Filing
- 35 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
9293154 Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devicesJun 26, 15Mar 22, 16[G11B]
9293155 Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devicesJun 26, 15Mar 22, 16[G11B]
9293156 Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devicesJun 26, 15Mar 22, 16[G11B]
9120704 Dielectric layer for electrostatic chuck and electrostatic chuckOct 15, 13Sep 01, 15[H01L, C04B]
9079800 Composite ceramic body, and component member for semiconductor manufacturing apparatusApr 17, 13Jul 14, 15[B82Y, C04B, H01B]
8486529 Fine metal carbide particles and methods of manufacturing the sameJan 06, 10Jul 16, 13[B32B]
8454933 Polycrystalline magnesium oxide (MgO) sintered body and MgO sputtering targetJan 27, 09Jun 04, 13[C23C, C01B, C25B, B28B, C04B, B22F, C01F, C22C]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
2010/0143,749 SUBSTRATE MATERIAL FOR MAGNETIC HEAD AND METHOD FOR MANUFACTURING THE SAMEAbandonedMar 30, 07Jun 10, 10[C04B, G11B]
2009/0068,498 MATERIAL OF CERAMIC SUBSTRATE FOR THIN-FILM MAGNETIC HEADAbandonedApr 07, 06Mar 12, 09[B28B, G11B]
2007/0172,378 Tungsten based sintered compact and method for production thereofAbandonedJan 28, 05Jul 26, 07[C22C]
6133182 Alumina base ceramic sintered body and its manufacturing methodExpiredSep 09, 99Oct 17, 00[C04B]
5886269 Substrate and heat sink for a semiconductor and method of manufacturing the sameExpiredFeb 14, 96Mar 23, 99[B22F]
5804797 PTC planar heater and method for adjusting the resistance of the sameExpiredSep 18, 95Sep 08, 98[H05B]
5592647 PTC panel heater with small rush current characteristic and highly heat insulating region corresponding to heater location to prevent local overheatingExpiredApr 08, 93Jan 07, 97[H05B, H01C, F24D]
5167697 Substrate material for mounting semiconductor device thereon and manufacturing method thereofExpiredApr 17, 91Dec 01, 92[B22F]
5093290 Silicon nitride type sintered bodies and method for producing the sameExpiredMar 02, 90Mar 03, 92[C04B]
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