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| Number | Title | Issue Date |
| 5798459 | Subject identification method, apparatus and system The present invention relates to a subject identification method which is adapted for performing an examination as to whether any change exists on an subject, or adapted for performing an estimation of a degree of the change on the subject. It is an aim t... | 08/25/1998 |
| 5462816 | Air cell An air cell having a single cell or a plurality of cells being aggregated is disclosed, that comprises a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode and composed of a water absor... | 10/31/1995 |
| 5240785 | Air cell The present invention is an air cell of substantially an all-surface open type, which includes a case through which a plurality of windows for air ventilation are provided, a plurality of single cells which are disposed in the case, and an electrolyte bat... | 08/31/1993 |
| 5204030 | Method for producing pitch-type carbon fiber A method for producing pitch-type carbon fiber, comprising the steps of discharging, from a spinning nozzle, a spinning pitch comprising an optically isotropic pitch and/or optically anisotropic pitch, maintained at such a temperature that the spinning pi... | 04/20/1993 |
| 5190696 | Process for preparation of carbonaceous molded body having excellent compressive elasticity Disclosed is a process for the preparation of a carbonaceous molded body, which comprises mixing elastic graphite particles with a binder and molding the mixture. A carbonaceous molded article having a light weight and an excellent elasticity, which is ch... | 03/02/1993 |
| 5183603 | Process for producing a coil-shaped carbon fiber bundle The present invention relates to a carbon fiber bundle comprising a regular coil-shaped fiber bundle and having excellent stretch characteristic. A process for producing a coil-shaped carbon fiber bundle according to the present invention comprises the st... | 02/02/1993 |
| 5137667 | Process for producing elastic graphite molded products A process for producing an elastic graphite molded product having light weight and excellent elasticity which comprises the steps of mixing elastic graphite particles as fillers with a binder resin, thereby to adhere the binder resin to the surface of the... | 08/11/1992 |
| 5057297 | Method for producing elastic graphite structures A method for producing graphite structures which are of light weight and excel in elasticity from a carbonaceous material comprises in succession the steps of: (a) treating said carbonaceous material with nitric acid or a nitric-sulfuric acid mixture, (b)... | 10/15/1991 |
| 5017358 | Preparation of elastic graphite materials A method for producing an elastic graphite material having a packing density of 1.0 g/cm3 or lower and a recovery of 50% or higher at a compressibility of 10 to 90% is provided, which comprises: heating a carbonaceous material rapidly while bri... | 05/21/1991 |
| 4828682 | Coking process This invention relates to a coking unit for producing coke articles of good quality from feed material heavy oils with a variety of properties and more specifically relates to a delayed coking unit comprising a heating furnace and coking drums connected i... | 05/09/1989 |
| 4769139 | Apparatus for production of crystallizable carbonaceous material A heavy oil such as an atmospheric pressure residue, a reduced pressure residue of petroleum, etc. is heated to 400° to 500° C. to carry out polycondensation and provide a pitch containing mesophase microspheres. This pitch is once cooled to 200° to 40... | 09/06/1988 |
| 4640822 | Apparatus for producing bulk mesophase Bulk mesophase can be economically produced without coking trouble from a heavy oil in an apparatus comprising: a heat-treatment vessel for heat treating the oil thereby to form pitch containing mesophase microspheres; a cyclone-type separator installed d... | 02/03/1987 |
| 4488957 | Method and apparatus for production of crystallizable carbonaceous material A heavy oil such as an atmospheric pressure residue, a reduced pressure residue of petroleum, etc. is heated to 400° to 500° C. to carry out polycondensation and provide a pitch containing mesophase microspheres. This pitch is once cooled to 200° to 40... | 12/18/1984 |
| 4381990 | Process for producing mesocarbon microbeads of uniform particle-size distribution Mesocarbon microbeads of narrow particle-size distribution are produced by: subjecting a heavy oil to a primary heat treatment at a temperature T1 to prepare a pitch containing mesophase microspheres; once cooling this pitch to a temperature lo... | 05/03/1983 |
| 4265710 | Process for calcining coke Process for calcining green coke in at least three heating stages, which comprises preheating the green coke in the first stage, preliminarily calcining the coke in the second stage, cooling the coke; and calcining the coke in the third stage, volatile ma... | 05/05/1981 |
| 4169767 | Process for calcining coke A process for calcining green coke containing water and combustible volatile matter and obtained by a delayed coking process in three or more stages of heating furnaces which are connected in series, and the control of the temperature and the adjustment o... | 10/02/1979 |
| 4080283 | Process for continuous production of pitch Pitch is produced continuously by heat treating a heavy hydrocarbon oil at a temperature of 350° to 500° C successively in two or more reactors connected in series, outlet to inlet, recirculating, at the same time, one portion of the liquid output subst... | 03/21/1978 |
