TOKYO TUNGSTEN CO., LTD.
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Feb 17, 2004 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 719 Total Citation Count
- Oct 17, 1989 Earliest Filing
- 8 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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
6693353 Semiconductor package and method for producing heat-radiating substrate for itFeb 18, 99Feb 17, 04[H01L]
6475429 Heat sink substrate consisting essentially of copper and molybdenum and method of manufacturing the sameJun 07, 01Nov 05, 02[B22F]
5928976 Composite carbide powder used for cemented carbide and method of producing the sameMay 19, 97Jul 27, 99[C01B]
5493153 Plastic-packaged semiconductor device having a heat sink matched with a plastic packageNov 26, 93Feb 20, 96[H01L, H05K]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6610375 Plasma facing components of nuclear fusion reactors employing tungsten materialsExpiredApr 18, 01Aug 26, 03[C23C, G21B]
6595821 Rotary anode for X-ray tube comprising an Mo-containing layer and a W-containing layer laminated to each other and method of producing the sameExpiredApr 20, 01Jul 22, 03[H01J]
6261648 Plasma facing components of nuclear fusion reactors employing tungsten materialsExpiredFeb 15, 95Jul 17, 01[C23C, G21B]
6233311 Rotary anode for X-ray tube comprising an Mo-containing layer and a W-containing layer laminated to each other and method of producing the sameExpiredFeb 26, 99May 15, 01[H01J]
5352489 Method for manufacturing a rotary anode for X-ray tubeExpiredAug 10, 93Oct 04, 94[C23C, H01J]
5259015 Rotary anode for X-ray tube and method for manufacturing the sameExpiredMay 13, 92Nov 02, 93[H01J]
Top Inventors for This Owner
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