Chiyoda Chemical Engineering & Construction Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 4105

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE31036 Catalysts for demetallization treatment of hydrocarbons supported on sepioliteNov 25, 80Sep 21, 82[B01J]
RE31037 Catalysts for demetallization treatment of hydrocarbons supported on sepioliteNov 25, 80Sep 21, 82[B01J]
RE31038 Catalysts for demetallization treatment of hydrocarbons supported on sepioliteNov 25, 80Sep 21, 82[B01J]
RE31039 Catalysts for demetallization treatment of hydrocarbons supported on sepioliteNov 25, 80Sep 21, 82[B01J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5130243 Process for production of starch sugarExpiredMar 15, 90Jul 14, 92[C12P, C12N]
4957868 Cylindrical hollow carriers for microorganisms made of nonwoven fabricExpiredAug 31, 88Sep 18, 90[C12N, C12M]
4956326 Method for dehalogenation of a halide and catalyst used thereforExpiredJul 10, 87Sep 11, 90[B01J]
4931263 Wet-process stack gas purification methodExpiredMar 25, 88Jun 05, 90[C01B, B01D]
4924966 MufflerExpiredAug 05, 87May 15, 90[F01N]
4909923 Method for hydrogenation of coal tar pitchExpiredJan 15, 87Mar 20, 90[C10C]
4765960 Apparatus for installing pipe in multipipe type gas-liquid contact equipmentExpiredMay 28, 85Aug 23, 88[B01T]
4755283 Fluid catalytic cracking of heavy hydrocarbon oilExpiredDec 05, 86Jul 05, 88[C10G]
4739180 Method and apparatus for generating electric energy using hydrogen storage alloyExpiredMar 17, 87Apr 19, 88[F01K]
4728081 Incinerating and melting apparatusExpiredDec 23, 85Mar 01, 88[C21C]
4723595 Heat exchanger using hydrogen storage alloyExpiredJul 30, 86Feb 09, 88[F25B]
4645506 Hip joint endoprosthesis with a stem to be anchored in the femurExpiredJun 22, 84Feb 24, 87[A61F]
4600076 Device for attenuating pulsation of fluids in piping systemsExpiredOct 16, 84Jul 15, 86[F16L]
4565546 Condensation product and use thereof as dispersant for pitch in water slurryExpiredJun 27, 84Jan 21, 86[C10L]
4562059 Method of preparing aluminaExpiredJun 08, 84Dec 31, 85[C01F]
4555394 Process for the preparation of aluminaExpiredJun 01, 84Nov 26, 85[C01F]
4539012 Pitch-containing compositionExpiredMar 22, 84Sep 03, 85[C10L]
4537600 Method for the preparation of pitch-in-water slurryExpiredMar 27, 84Aug 27, 85[C10L]
4530753 Method of converting heavy hydrocarbon oils into light hydrocarbon oilsExpiredJul 16, 84Jul 23, 85[C10G]
4530754 Process for the conversion of heavy hydrocarbon oils into light hydrocarbon oilsExpiredJul 16, 84Jul 23, 85[C10G]

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