Patents Assigned to Nippon Oil & Fats Company Limited
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Patent number: 4615268Abstract: A remote blasting system for exploding a number of explosives in a multiple-step manner including an oscillating unit for radiating an electromagnetic wave due to which A.C. currents are induced in receiving units some of which are directly connected to detonators and the remaining receiving units being connected to detonators via at least one switching unit which includes a switch and an actuating member for driving the switch. At the end of first excitation, the switch is closed and at the end of second excitation the detonator is blasted via the closed switch.Type: GrantFiled: November 14, 1984Date of Patent: October 7, 1986Assignee: Nippon Oil and Fats Company LimitedInventors: Masashi Nakano, Takeo Ueda
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Patent number: 4601243Abstract: A number of detonating primers are electrically blasted by supplying a high frequency current through a bus wire formed by a pair of parallel conductors connected to each other at distal ends and having a constant impedance with which bus wire loops connected to the detonating primers via leg wires are electromagnetically coupled via a number of magnetic cores having slits formed therein. At first, one or more loops are inserted into respective magnetic core through the slit and one of the parallel conductors is also inserted into the magnetic core through the slit. When the high frequency current having a frequency from 100 KHz to 1 MHz is passed through the conductors of bus wire in opposite directions, there is induce electromagnetically secondary high frequency currents in respective loops, which are supplied to respective detonating primers for explosion.Type: GrantFiled: October 2, 1984Date of Patent: July 22, 1986Assignee: Nippon Oil and Fats Company, LimitedInventors: Takeo Ueda, Yoshiro Ohsumi
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Patent number: 4601856Abstract: A method of producing a highly purified oleic acid is disclosed, which comprises the steps of:(a) separating and removing the resulting precipitated crystal after the cooling of a solution of oleic acid containing fatty acid mixture and urea in an organic solvent;(b) separating the resulting crystallized crystal after the partial saponification of the organic solvent solution; and(c) subjecting the crystal to an acid decomposition.Type: GrantFiled: December 2, 1985Date of Patent: July 22, 1986Assignee: Nippon Oil and Fats Company, LimitedInventors: Masao Suzuki, Kenichi Hashimoto, Tadashi Satoh
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Patent number: 4578260Abstract: Diamond can be easily purified from a powdery mixture of diamond and graphite by heating the mixture together with ammonium nitrate and at least one metal oxide of lead monoxide, trilead tetroxide, magnesium oxide and zinc oxide, to oxidize the graphite powder, and removing the oxidized graphite.Type: GrantFiled: April 24, 1985Date of Patent: March 25, 1986Assignee: Nippon Oil and Fats Company LimitedInventors: Yutaka Kuroyama, Masatada Araki
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Patent number: 4554032Abstract: A water-in-oil emulsion explosive composition containing hollow microspheres obtained by firing volcanic ash and having a bulk density of 0.05-0.1 and an average particle size of 10-100 .mu.m has improved explosion performance and safety over water-in-oil emulsion explosive composition containing conventional hollow microspheres.Type: GrantFiled: August 28, 1984Date of Patent: November 19, 1985Assignee: Nippon Oil and Fats Company, LimitedInventors: Katsuhide Hattori, Yoshiaki Fukatsu, Hiroshi Sakai
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Patent number: 4547234Abstract: An explosive composition containing micro-voids consisting of thermoplastic resin hollow microspheres coated with a thermosetting resin has a remarkably excellent low temperature detonability in a small diameter cartridge after lapse of a long period of time.Type: GrantFiled: July 5, 1984Date of Patent: October 15, 1985Assignee: Nippon Oil and Fats Company LimitedInventors: Fumio Takeuchi, Masao Takahashi, Hiroshi Sakai
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Patent number: 4534809Abstract: A water-in-oil emulsion explosive composition containing specifically limited hollow microspheres consisting of neutral or weakly acidic hollow microspheres coated with a coating material has a high consistency without deteriorating its storage stability in initiation sensitivity in a small diameter cartridge, and can be safely and easily handled.Type: GrantFiled: August 28, 1984Date of Patent: August 13, 1985Assignee: Nippon Oil and Fats Company LimitedInventors: Fumio Takeuchi, Masao Takahashi, Katsuhide Hattori, Hiroshi Sakai
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Patent number: 4482403Abstract: A water-in-oil emulsion explosive composition containing an emulsifier consisting of a mixture of sorbide, sorbitan and sorbitol fatty acid esters in a specifically limited mixing ratio, has an improved storage stability in initiation sensitivity in small diameter cartridges and at low temperatures and further has an improved resistance against dead pressing.Type: GrantFiled: March 20, 1984Date of Patent: November 13, 1984Assignee: Nippon Oil and Fats Company, LimitedInventors: Fumio Takeuchi, Masao Takahashi, Hiroshi Sakai
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Patent number: 4398976Abstract: A water-in-oil emulsion explosive composition having excellent storage stability, low-temperature detonability and explosion reactivity is disclosed, which comprises (a) a disperse phase formed of an inorganic nitrate consisting mainly of ammonium nitrate, (b) a continuous phase formed of an oil, (c) an emulsifier, (d) hollow microspheres and/or a chemical foaming agent, and (e) an inorganic chlorate.Type: GrantFiled: December 23, 1981Date of Patent: August 16, 1983Assignee: Nippon Oil and Fats Company, LimitedInventors: Katsuhide Hattori, Yoshiaki Fukatsu, Akio Torii
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Patent number: 4394198Abstract: A water-in-oil emulsion explosive composition having a remarkably improved storage stability in its initiation sensitivity in small diameter cartridges and at low temperatures is disclosed. The explosive composition comprises a disperse phase formed of an aqueous oxidizer solution consisting of (a) ammonium nitrate or a mixture of ammonium nitrate and another oxidizer salt, (b) water and (c) a specifically limited weak acid salt or condensed phosphate; a continuous phase consisting of (d) fuel oil and/or wax; (e) an emulsifier; and (f) hollow microspheres or microbubbles.Type: GrantFiled: August 17, 1981Date of Patent: July 19, 1983Assignee: Nippon Oil and Fats Company, LimitedInventors: Fumio Takeuchi, Masao Takahashi
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Patent number: 4394170Abstract: A composite sintered compact containing high density boron nitride, which consists of zincblende-type boron nitride, wurtzite-type boron nitride, ceramic material and metal in a specifically limited mixing ratio and has a high abrasion resistance, can be obtained under a relatively mild sintering condition and can be easily worked into a cutting tool.Type: GrantFiled: November 14, 1980Date of Patent: July 19, 1983Assignee: Nippon Oil and Fats Company, LimitedInventors: Akira Sawaoka, Masatada Araki, Shinroku Saito, Tamotsu Akashi
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Patent number: 4326900Abstract: Water-in-oil emulsion explosive compositions containing (e) nitromethane gelatinized product obtained by mixing nitromethane with a gelatinizer for nitromethane and (f) hollow microspheres and/or (g) bubbles formed from a chemical foaming agent in a water-in-oil emulsion composition consisting of (a) ammonium nitrate or ammonium nitrate and the other inorganic oxidizer salts, (b) water, (c) an oil and/or wax and (d) a sorbitan fatty acid ester surfactant.Type: GrantFiled: November 27, 1979Date of Patent: April 27, 1982Assignee: Nippon Oil and Fats Company LimitedInventors: Katsuhide Hattori, Yoshiaki Fukatsu, Masao Takahashi
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Patent number: 4318834Abstract: An aqueous liquid dispersion of polymers can be obtained by two steps of reaction comprising the first step of copolymerizing polymeric peroxide with vinyl type monomers, whereby copolymers having peroxy bonds therein are obtained and the second step of subjecting said copolymers having peroxy bonds therein to block copolymerization with vinyl type monomers which are different in kind from the one employed in the first step of reaction, whereby said copolymers having peroxy bonds therein are cleaved at the peroxy bonds thereof, thereby obtaining block copolymers with high efficiency.Type: GrantFiled: September 29, 1980Date of Patent: March 9, 1982Assignee: Nippon Oil and Fats Company LimitedInventors: Hiroshi Ohmura, Masaharu Nakayama
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Patent number: 4315784Abstract: A water-in-oil emulsion explosive composition consisting of ammonium nitrate or a mixture of ammonium nitrate and the other inorganic oxidizer salts, water, oil and/or wax, 1-hydroxyethyl-2-imidazoline derivative as an emulsifier and at least one of hollow microsphere and bubbles generated from a chemical foaming agent is excellent in the emulsion stability in storage, low temperature detonability and explosion reactivity.Type: GrantFiled: November 27, 1979Date of Patent: February 16, 1982Assignee: Nippon Oil and Fats Company, LimitedInventors: Katsuhide Hattori, Yoshiaki Fukatsu, Masao Takahashi
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Patent number: 4246672Abstract: An automatic inflatable safety work vest in which a gas is automatically charged into a gas tight chamber forming a floating body upon contacting water, comprises a back part of the vest formed of a non-floating material, a floating body provided at the front of the vest and connected with stretchable bands to the back part and having a gas tight chamber, a pillow integrally formed at the upper portion of the vest which communicates with the gas tight chamber, the pillows being folded over and releasably attached to the outer surface of the back part and a gas charging device in communication with the gas tight chamber and connected to the floating body through a connector, the gas charging device being a flat cylindrical vessel provided with a gas outlet at the bottom surface, a pair of electrodes positioned oppositely and fixed at a side wall near an upper cover portion of the cylindrical vessel, an electric switch provided at the upper portion of the cylindrical vessel and connecting to the electrodes andType: GrantFiled: April 18, 1979Date of Patent: January 27, 1981Assignees: Nippon Oil and Fats Company, Limited, Fujikura Rubber Works, LimitedInventors: Hikaru Fujiyama, Masayoshi Shimada
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Patent number: 4187078Abstract: Coal dispersing oil compositions containing 10-90% by weight of a petroleum oil, 10-90% by weight of coal powders and 0.01-5% by weight of at least one surface active agent selected from phosphoric esters, salts of phosphoric esters, organic sulfonic acids, salts of organic sulfonic acids, sulfuric esters and salts of sulfuric esters.Type: GrantFiled: October 6, 1977Date of Patent: February 5, 1980Assignee: Nippon Oil and Fats Company, LimitedInventors: Hirozumi Shimizu, Taizo Igarashi, Takaharu Ishizaki, Toshio Koma, Hideki Takahashi
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Patent number: 4136068Abstract: A water dispersable coating composition usable for metallic coat and consisting mainly of the following three componentsA. a water dispersable cellulose graft polymer obtained by graft polymerizing styrene, ethylenically unsaturated carboxylic acid and the other copolymerizable vinyl monomer to a reaction product of a cellulose ester derivative having 1-20% by weight of free hydroxyl group with maleic anhydride,B. a water dispersable acrylic copolymer consisting of ethylenically unsaturated monomer having hydroxyl group, ethylenically unsaturated carboxylic acid and the other copolymerizable vinyl monomer, andC. amino resin.Type: GrantFiled: August 11, 1977Date of Patent: January 23, 1979Assignee: Nippon Oil and Fats Company, LimitedInventors: Yukio Nomura, Osamu Nagura, Hiromasa Masuda
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Patent number: 3977922Abstract: A capsulated explosive composition comprising a high molecular weight compound forming the capsule wall and an explosive forming the core is high in power and low in sensitivity and vapor pressure, and can be easily handled.Type: GrantFiled: September 4, 1973Date of Patent: August 31, 1976Assignee: Nippon Oils and Fats Company LimitedInventors: Kazuhiro Inoue, Hiroshi Sato, Fumio Matsui
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Patent number: 3971709Abstract: Smooth cured coated films having excellent properties are formed by electrodepositing and coating a film on a cathode of an electroconductive material in an electrodeposition bath containing a cationically electrodepositing composition, which is composed of a polymer resin having amino groups and acryloyl or methacryloyl groups and of acrylic or methacrylic acid, and curing the coated film by the irradiation of an ionic radiation.Type: GrantFiled: October 15, 1974Date of Patent: July 27, 1976Assignee: Nippon Oils and Fats Company LimitedInventors: Akira Ohsawa, Ryosuke Yamazaki, Osamu Ohe, Ryoji Okamura
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Patent number: 3966625Abstract: Polyoxyalkylene glycol diethers having the general formula ##EQU1## are a good viscosity index improver having a high solubility in a mineral oil and an excellent shear stability. This invention relates to a lubricating oil composition consisting essentially of a mineral oil and the above described polyoxyalkylene glycol diether.Type: GrantFiled: October 3, 1974Date of Patent: June 29, 1976Assignee: Nippon Oils and Fats Company LimitedInventors: Yoshiharu Tanizaki, Hiroshi Kawaguchi, Kenichiro Minagawa