| Patent Number |
Title Of Patent |
Date Issued |
| 5268141 |
Iron based alloy having low contents of aluminum silicon, magnesium, calcium, oxygen, sulphur, a |
December 7, 1993 |
| An iron base alloy is disclosed which consists essentially of 0.005%-7.0% of aluminum, 0.005-7.0% of silicon, 0.0001%-0.005% of magnesium, 0.0001-0.005% of calcium, 0.001%-0.002% of oxygen, 0.0001-0.002% of sulphur, and 0.0005%-0.003% of nitrogen, less than 2% of carbon, minor amount |
| 5222839 |
Method and apparatus for underwater reclamation |
June 29, 1993 |
| An improved method for underwater reclamation is disclosed. Dredged mud sent under pressure by an earth and sand conveying device is treated with solidifying material, and before it is solidified, it is directly fed to an underwater reclaiming apparatus. The treated mud is fed through a |
| 5089185 |
Optical molding method |
February 18, 1992 |
| An optical molding method includes the step of radiating a light flux onto a photocurable fluid substance while moving the light flux in such a manner as to draw a section of a target object so as to cure the irradiated portion. A plurality of light fluxes having different diameters |
| 5089184 |
Optical molding method |
February 18, 1992 |
| In one method, a base for supporting a cured object is brought into close contact with or close to an aperture of a container so as to remove the bubbles therebetween. When one layer is formed, parts of the layer may be successively formed, wherein the base is moved back and forth to sep |
| 4999053 |
Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxyg |
March 12, 1991 |
| A method of producing an alloy containing at least one major ingredient selected from the group consisting of iron (Fe), cobalt (Co), and Nickel (Ni) and having low contents of sulphur, oxygen, and nitrogen, comprises steps of:(a) holding a molten alloy in a container selected from the g |
| 4820485 |
Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxyg |
April 11, 1989 |
| A method of producing an alloy containing at least one major ingredient selected from the group consisting of iron (Fe), cobalt (Co), and Nickel (Ni) and having low contents of sulphur, oxygen, and nitrogen, comprises steps of:(a) holding a molten alloy in a container selected from the g |
| 4729787 |
Method of producing an iron; cobalt and nickel base alloy having low contents of sulphur, oxygen |
March 8, 1988 |
| A method of producing an alloy containing at least one major ingredient selected from the group consisting of iron (Fe), cobalt (Co), and Nickel (Ni) and having low contents of sulphur, oxygen, and nitrogen, comprises steps of:(a) holding a molten alloy in a container selected from the g |
| 4704997 |
Device for preventing abnormal flow of gas fuel from gas fuel injector of diesel engine |
November 10, 1987 |
| A device for preventing abnormal flow of gas fuel from a gas fuel injector of a diesel engine. The device has a pipe for supplying a pressurized gas fuel, a fuel injector including a passage connected to the pipe and leading to fuel injection nozzle ports, and a fuel cut-off valve means |
| 4578879 |
Fluidizing apparatus |
April 1, 1986 |
| An improved fluidizing apparatus includes a gas distribution plate which is supported by support means located below the level of the gas distribution plate. The support means comprises beam members extending across the interior of the vessel and a number of rods standing upright on the |
| 4345533 |
Semi-submerged ship |
August 24, 1982 |
| Disclosed is a semi-submerged ship comprising at least two lower hulls always located below the surface of water and arranged substantially in parallel to each other with respect to the direction of advance, struts mounted substantially vertically on the upper portion of each of all or a |
| 4342255 |
Oscillator actuated hydraulic impulse device |
August 3, 1982 |
| An oscillator actuated hydraulic impulse of the type including a spool valve actuated by an alternating signal from an oscillator to switch the hydraulic pressure in a double acting cylinder in order to cause reciprocating motion of a piston which strikes a boring tool. The hydraulic |
| 4327469 |
Method for mounting ring-shaped construction on ship stern |
May 4, 1982 |
| A method for mounting a ring-shaped construction on a ship stern in front of a propeller which comprises fixing a plurality of pieces at a predetermined distance along a periphery of a ring-shaped construction, marking the points respectively on a plurality of said pieces which are l |
| 4326822 |
Artificial island for installing oil drilling equipment in ice covered sea areas |
April 27, 1982 |
| An artificial island for installing oil drilling equipment in ice covered sea areas, comprising barricades against ice which surround oil drilling equipment installed in ice covered sea-water and whose respective top portions are projected above the surface of the sea-water, means provid |
| 4305910 |
Catalytic reaction for reduction of nitrogen oxide |
December 15, 1981 |
| A catalytic reactor for reducing nitrogen oxide (NO.sub.x) contained in exhaust gas under the presence of ammonia is provided, wherein tubular catalyst units each being a ring shape in cross-section are disposed in spaced apart relationship from one another in the cross-section of the |
| 4295758 |
Working platform for oil drilling operations in ice covered sea areas |
October 20, 1981 |
| A working platform for oil drilling operations in ice covered sea areas, which essentially comprises oil drillig equipment, an oil drilling pipe connecting the oil drilling equipment to the sea bottom, and a floating frame having a buoyancy and a strength enough to stand the pressure of |
| 4287790 |
High-speed bevel gear transmission system |
September 8, 1981 |
| A high-speed bevel gear transmission system for transmitting power from an input shaft to a pair of parallel outputs shafts the axes of which intersect each other. The input shaft has a pair of driving bevel gears which are fixedly mounted thereon such that the driving bevel gears face |
| 4276153 |
Process for thermal cracking of hydrocarbons and apparatus therefor |
June 30, 1981 |
| A process for the thermal cracking of hydrocarbons by feeding them into a line together with a fused salt, which comprises: feeding a fused salt mixed with steam into a reaction tube of a thermal cracking furnace of external heating type and further feeding raw hydrocarbons mixed with |
| 4274804 |
Axial-flow turbine |
June 23, 1981 |
| An axial-flow turbine which is driven by a working fluid which contains dust and moisture is disclosed. The turbine has stator blade means and rotor blade means, and a working fluid exit angle of a first-stage stator blade means is smaller than that of the second-stage stator blade, wher |
| 4217204 |
Process for cracking hydrocarbons utilizing a mist of molten salt in the reaction zone |
August 12, 1980 |
| Hydrocarbons are cracked in the presence of a mist of molten salt containing of basic compounds of alkali and alkaline earth metals and mixtures thereof, the amount of the molten salt to hydrocarbon being, by weight, from 0.01:1 to 10:1 followed by quenching at a temperature not lowe |
| 4214992 |
Water collecting and distributing apparatus disposed in a lower portion of high speed filter bas |
July 29, 1980 |
| A water collecting and distributing apparatus capable of collecting filtrate, distributing raw water, supplying back wash water and dispersing scouring air, which is disposed in a lower portion of a high speed filter basin, is disclosed. This apparatus comprises a plurality of blocks |
| 4198917 |
Ice-breaking means for ships |
April 22, 1980 |
| Disclosed are ice-breaking units for ships adapted to be installed at the bow and/or bottom portion of the ship's hull, consisting of two ice-breaking units each of which can be reversibly driven independently of each other, for performing ice-breaking and/or propulsion of the ship. The |
| 4152999 |
Ice-breaking apparatus for ships and barges for operation on icy waters |
May 8, 1979 |
| An ice-breaking apparatus for use in ships and barges operating on icy waters, including nozzles for jetting high pressure fluid, is disclosed. By impinging force or cavitation caused by the high pressure fluid jetted from the nozzles, grooves or cracks are formed on an ice floe, and the |
