Assignee
TOKAI CARBON KK
JP·59 granted patents·19 pending applications·693 citations·filing 1983–2023
Top patents by PatentIndex Score
78 records- 0191US4500504AProcess for preparing silicon carbide whiskersTOKAI CARBON KK·Filed 1983·Granted Feb 19, 1985·39 cites·10 claims
- 0289US6383333B1Protective member for inner surface of chamber and plasma processing apparatusTOKAI CARBON KK·Filed 1999·Granted May 7, 2002·96 cites·5 claims
- 0388US4500672ARubber composition comprising furnace carbon blackTOKAI CARBON KK·Filed 1983·Granted Feb 19, 1985·35 cites·5 claims
- 0485US4478973ARubber composition containing furnace carbon blackTOKAI CARBON KK·Filed 1984·Granted Oct 23, 1984·32 cites·4 claims
- 0581US5321072ARubber compositionTOKAI CARBON KK·Filed 1993·Granted Jun 14, 1994·27 cites·1 claims
- 0676US11646406B2Negative electrode material for lithium-ion secondary battery and method for producing negative electrode material for lithium-ion secondary batteryTOKAI CARBON KK·Filed 2018·Granted May 9, 2023·2 cites·5 claims
- 0774US6197870B1Hard-type high-structure carbon black and rubber composition comprising sameTOKAI CARBON KK·Filed 1999·Granted Mar 6, 2001·27 cites·6 claims
- 0874US5525276AMethod for manufacturing high strength isotropic graphite piston componentsTOKAI CARBON KK·Filed 1994·Granted Jun 11, 1996·38 cites·3 claims
- 0970US6426133B1Graphite material coated with silicon carbideTOKAI CARBON KK·Filed 2000·Granted Jul 30, 2002·17 cites·5 claims
- 1070US5231129ARubber compositionTOKAI CARBON KK·Filed 1992·Granted Jul 27, 1993·17 cites·1 claims
- 1169US7740990B2Separator material for solid polymer fuel cell and process for producing the sameTOKAI CARBON KK·Filed 2005·Granted Jun 22, 2010·2 cites·4 claims
- 1268US8026319B2Dispersible surface-modified carbon blackTOKAI CARBON KK·Filed 2007·Granted Sep 27, 2011·1 cites·6 claims
- 1367US7754177B2Carbon nanoballoon structure and method for preparation thereof, and electron emitterTOKAI CARBON KK·Filed 2005·Granted Jul 13, 2010·1 cites·2 claims
- 1467US5252297AProcess for producing carbon black and apparatus thereforTOKAI CARBON KK·Filed 1991·Granted Oct 12, 1993·20 cites·1 claims
- 1567US4784695ACarbon black for blending in rubberTOKAI CARBON KK·Filed 1988·Granted Nov 15, 1988·21 cites·1 claims
- 1666US5100637ACarbon black for compounding into tire tread rubberTOKAI CARBON KK·Filed 1991·Granted Mar 31, 1992·19 cites·1 claims
- 1764US6300226B1Formed SIC product and manufacturing method thereofTOKAI CARBON KK·Filed 1999·Granted Oct 9, 2001·26 cites·11 claims
- 1862US11981790B2Carbon black and method for producing carbon blackTOKAI CARBON KK·Filed 2021·Granted May 14, 2024·0 cites·5 claims
- 1962US4786677ARubber composition containing a carbon black particles having two modal diameters in the aggregateTOKAI CARBON KK·Filed 1987·Granted Nov 22, 1988·15 cites·4 claims
- 2062US2025129250A1Electroconductive carbon black, method for producing electroconductive carbon black, and electroconductive materialTOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 2161US2025136817A1Method for producing modified recycled carbon black and modified recycled carbon blackTOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 2260US2025084292A1Sintered metal friction material and production method for sameTOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 2358US12368026B2Polycrystalline SiC compact and method for manufacturing the sameTOKAI CARBON KK·Filed 2022·Granted Jul 22, 2025·0 cites·7 claims
- 2458US5256243AProcess for producing titanium carbide whiskerTOKAI CARBON KK·Filed 1991·Granted Oct 26, 1993·14 cites·3 claims
- 2558US2025223448A1Modified recycled carbon black, and rubber compositionTOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 2658US2010269732A1Aqueous dispersion of surface-treated carbon black and method of producing the sameTOKAI CARBON KK·Filed 2008·Application pending·0 cites
- 2757US4929472ASurface-coated SiC whiskers, processes for preparing the same, ceramic reinforced with the same, and process for preparing said reinforced ceramicTOKAI CARBON KK·Filed 1988·Granted May 29, 1990·16 cites·6 claims
- 2857US4632794AProcess for manufacturing whisker preform for composite materialTOKAI CARBON KK·Filed 1983·Granted Dec 30, 1986·11 cites·3 claims
- 2957US2026028751A1POLYCRYSTALLINE SiC FORMED BODY AND METHOD FOR MANUFACTURING THE SAMETOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 3057US2025154647A1SiC FORMED BODY AND METHOD FOR PRODUCING SiC FORMED BODYTOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 3156US12065572B2Carbon black, method for producing carbon black, and rubber compositionTOKAI CARBON KK·Filed 2020·Granted Aug 20, 2024·0 cites·4 claims
- 3256US6989083B2Method for preparing carbon nano-fine particle, apparatus for preparing the same and mono-layer carbon nanotubeTOKAI CARBON KK·Filed 2003·Granted Jan 24, 2006·4 cites·15 claims
- 3356US5246894ASilicon carbide reinforced composite materialTOKAI CARBON KK·Filed 1992·Granted Sep 21, 1993·15 cites·5 claims
- 3456US2025105048A1Wafer lift pinTOKAI CARBON KK·Filed 2022·Application pending·0 cites
- 3555US4888215ACarbonaceous granular heat insulator and process for preparing the sameTOKAI CARBON KK·Filed 1987·Granted Dec 19, 1989·12 cites·8 claims
- 3652US5265118ASilicon carbide whisker production apparatusTOKAI CARBON KK·Filed 1992·Granted Nov 23, 1993·9 cites·4 claims
- 3752US5162421ARubber compositionTOKAI CARBON KK·Filed 1991·Granted Nov 10, 1992·13 cites·1 claims
- 3851US11644076B2Sintered metal friction materialTOKAI CARBON KK·Filed 2017·Granted May 9, 2023·0 cites·4 claims
- 3951US2025171927A1Polycrystalline sic formed body and method for producing the sameTOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 4050US9914835B2Carbon black, method for producing carbon black, and rubber compositionTOKAI CARBON KK·Filed 2013·Granted Mar 13, 2018·0 cites·4 claims
- 4150US6893749B2SiC-formed materialTOKAI CARBON KK·Filed 2001·Granted May 17, 2005·2 cites·8 claims
- 4250US5059408ACarbon black for tire treadTOKAI CARBON KK·Filed 1989·Granted Oct 22, 1991·12 cites·1 claims
- 4350US4973463ACarbon black for tire treadTOKAI CARBON KK·Filed 1989·Granted Nov 27, 1990·11 cites·1 claims
- 4450US2011253008A1Aqueous dispersion of surface-treated carbon black and method of producing the sameTOKAI CARBON KK·Filed 2011·Application pending·0 cites
- 4550US2022341054A1Polycrystalline sic articleTOKAI CARBON KK·Filed 2020·Application pending·0 cites
- 4650US2024183071A1POLYCRYSTALLINE SiC MOLDED ARTICLE AND METHOD FOR PRODUCING SAMETOKAI CARBON KK·Filed 2023·Application pending·0 cites
- 4749US5230878ACarbon black for tire tread rubberTOKAI CARBON KK·Filed 1991·Granted Jul 27, 1993·8 cites·1 claims
- 4848US5225475ARubber compositionTOKAI CARBON KK·Filed 1991·Granted Jul 6, 1993·7 cites·2 claims
- 4948US2017051124A1Carbon black and rubber compositionTOKAI CARBON KK·Filed 2014·Application pending·0 cites
- 5047US5320820ACarbon black for tire tread rubberTOKAI CARBON KK·Filed 1993·Granted Jun 14, 1994·7 cites·1 claims
Showing the top 50 of 78 patent records by PatentIndex Score.
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