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.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →