Patents Assigned to Iwatani Sangyo Kabushiki Kaisha
-
Patent number: 6344130Abstract: A method for generating highly concentrated ozone gas by adsorbing ozone gas generated by an ozonizer with an absorbent within an adsorption column and then separating highly concentrated ozone gas from the adsorption column. Three adsorption columns are arranged in parallel. Each of the adsorption columns is controlled to repeat four steps of an ozone gas adsorbing step, a stabilizing and pressurizing step, an ozone gas desorbing step and a cooling down step. Each of the ozone gas adsorbing step and the ozone gas desorbing step has operation time set twice the operation time of each of the stabilizing and pressurizing step and the cooling down step. An ozone gas concentrating unit comprises three adsorption columns which are set to operate one after another by ⅓ cycle lag. Highly concentrated ozone gas separated at the desorbing step of each adsorption column is once stored in an ozone gas storage vessel.Type: GrantFiled: November 19, 1999Date of Patent: February 5, 2002Assignee: Iwatani Sangyo Kabushiki Kaisha (Iwatani International Corporation)Inventors: Kunihiko Koike, Goichi Inoue, Tatsuo Fukuda
-
Patent number: 5746841Abstract: A high-concentration ozone gas having a concentration of at least 50 VOL % of ozone in the ozone-oxygen system is acted within the temperature range of a normal temperature to 60.degree. C. on an ultrapurity-gas piping system for use in a semiconductor manufacturing apparatus and the like or on a metal component part for use in an ultrahigh-vacuum apparatus to form a passivation film on the interior metal surface thereof.Type: GrantFiled: March 8, 1996Date of Patent: May 5, 1998Assignee: Iwatani Sangyo Kabushiki Kaisha Iwatani International CorporationInventors: Kunihiko Koike, Goichi Inoue
-
Patent number: 5536659Abstract: Bacteria such as E. coli which are easy in manipulation are transformed by the gene encoding a ethylene-forming enzyme, and ethylene is formed by the transformants.Type: GrantFiled: March 1, 1994Date of Patent: July 16, 1996Assignees: Hideo Fukuda, Iwatani Sangyo Kabushiki Kaisha (Itatani International Corporation)Inventors: Hideo Fukuda, Takahira Ogawa, Takao Fujii, Kazuhiro Nagahama
-
Patent number: 5524386Abstract: A grafting method for uniting a scion to a stock includes forming conical projection on either a lower portion of a scion or an upper portion of a stock, forming a conical recess on either a lower portion of a scion or an upper portion of a stock, and joining the conical projection in the conical recess to unite the scion to the stock. A grafting apparatus includes a holder for holding either a scion or a stock, a die member having a conical hole into which either a scion or a stock is inserted, a cutting blade member arranged and movable along a generatrix of the conical hole, a ultrasonic drive device for moving the cutting blade member upward and downward at a ultrasonic high speed, a rotating drive device for rendering a relative rotation between the holder and the cutting blade member, and an elevating drive device for rendering a relative movement between the holder and the die member.Type: GrantFiled: January 20, 1995Date of Patent: June 11, 1996Assignees: Iwatani Sangyo Kabushiki Kaisha, Nouji Kumiai Houjin Mikuni Baio NoujouInventors: Nobuo Honami, Haruhiko Murase, Yoshifumi Nishiura, Tomoaki Taira, Fumio Kobayashi, Yoshio Yasukuri, Hiroshi Takigawa, Osamu Kurokoshi
-
Patent number: 5522223Abstract: A low-temperature end of a pulse tube (1) and a low-temperature end of a cold accumulator (2) are communicated with each other through an endothermic connection passage (3), so that refrigerant gas to be supplied from a compressor (7) to a high-temperature end of the cold accumulator (2) through a refrigerant gas passage (28) is introduced from the low-temperature end of the pulse tube (1) to the high-temperature end thereof through the cold accumulator (2) and the endothermic connection passage (3). A buffer tank (30) is connected to the high-temperature end of the pulse tube (1) through a first orifice (31). A sub gas passage (32) branched off from the refrigerant gas passage (28) is connected to the the buffer tank (30) through a second orifice (33).Type: GrantFiled: March 17, 1995Date of Patent: June 4, 1996Assignees: Iwatani Sangyo Kabushiki Kaisha, Iwatani Plantech Corp.Inventors: Masayoshi Yanai, Etsuji Kawaguchi, Tomio Nishitani
-
Patent number: 5515685Abstract: Two three-way valves (12) (13) of the rotary type are arranged in parallel in a high-pressure refrigerant gas passage (15) of a compressor (7). A high-temperature end portion of a cold accumulator (2) is communicated with one three-way valve (12) of the rotary type through a main gas passage (19) as well as a high-temperature end of a pulse tube (1) is communicated with the other three-way valve (13) of the rotary type through a sub gas passage (20). A low-pressure port of each three-way valve (12)(13) is communicated with a low-pressure refrigerant gas return passage (17) of the compressor (7) respectively. A flow regulating member (21) is interposed in the sub gas passage (20). Both the three-way valves (12) (13) are synchronously rotated. A valve opening-closing timing of the one three-way valve (12) or (13) is adjustably changed relative to that of the other three-way valve (13) or (12).Type: GrantFiled: February 21, 1995Date of Patent: May 14, 1996Assignees: Iwatani Sangyo Kabushiki Kaisha, Iwatani Plantech CorporationInventors: Masayoshi Yanai, Tomio Nishitani, Etsuji Kawaguchi
-
Patent number: 5421902Abstract: When removing a laminar deposit existing in a thin film forming operational system of a semiconductor manufacturing apparatus, a mixture gas prepared by mixing nitrogen trifluoride gas with a fluoric gas is introduced into the thin film forming operational system so as to be brought into contact in a non-plasma state with the laminar deposit.Type: GrantFiled: May 2, 1994Date of Patent: June 6, 1995Assignee: Iwatani Sangyo Kabushiki Kaisha (Iwatani International Corp)Inventors: Hideki Odajima, Chitoshi Nogami, Masanori Suzuki, Manabu Saeda
-
Patent number: 5414958Abstract: A grafting method for uniting a scion to a stock includes forming a conical projection on either a lower portion of a scion or an upper portion of a stock, forming a conical recess on either a lower portion of a scion or an upper portion of a stock, and joining the conical projection in the conical recess to unite the scion to the stock. A grafting apparatus includes a holder for holding either a scion or a stock, a die member having a conical hole into which either a scion or a stock is inserted, a cutting blade member arranged and movable along a generatrix of the conical hole, a ultrasonic drive device for moving the cutting blade member upward and downward at a ultrasonic high speed, a rotating drive device for rendering a relative rotation between the holder and the cutting blade member, and an elevating drive device for rendering a relative movement between the holder and the die member.Type: GrantFiled: July 12, 1993Date of Patent: May 16, 1995Assignees: Iwatani Sangyo Kabushiki Kaisha, Nouji Kumiai Houjin Mikuni Baio NoujouInventors: Nobuo Honami, Haruhiko Murase, Yoshifumi Nishiura, Tomoaki Taira, Fumio Kobayashi, Yoshio Yasukuri, Hiroshi Takigawa, Osamu Kurokoshi
-
Patent number: 5382214Abstract: A method for fabricating a cardboard pallet and an apparatus for fabricating continuously and at a high speed a cardboard pallet having cardboard tubular leg members arranged and secured integrally to a cardboard table element is provided. After an adhesive has been applied to both side surfaces of a plurality of attachment portions of the cardboard table element with the attachment portions having a plurality of adhesion finger members formed by die-cut lines defined inside of a phantom folding line, open ends of outer leg elements are brought into contact with one side surface of the attachment portions and inner leg elements located on the other side surface of the attachment portions are pushed into the outer leg elements so that leg members can be secured uprightly to one side surface of the table element.Type: GrantFiled: June 9, 1993Date of Patent: January 17, 1995Assignees: Iwatani Sangyo Kabushiki Kaisha, Nikki Box Stitching Machine Co, Ltd.Inventor: Toshiyuki Mano
-
Patent number: 5327729Abstract: In an apparatus for producing liquid nitrogen by supplying to a nitrogen gas separated from the atmosphere and then purified by an air separating device (4) into an insulated container (1) equipped with an extremely low temperature refrigerator, there are provided a pressure sensor (21) for detecting a pressure within a product vessel (20) of the air separating device (4) and a negative pressure sensor (16) for detecting a negative pressure within the insulated vessel (1) respectively. When at least one of both sensors (21) (16) detects a freezing of an impurity gas contained in the supplied nitrogen gas by reaching a predetermined pressure, an operation of the extremely low temperature refrigerator is stopped depending on the detection by one of both the sensors.Type: GrantFiled: January 19, 1993Date of Patent: July 12, 1994Assignees: Iwatani Sangyo Kabushiki Kaisha, Iwatani Plantech CorporationInventors: Masayoshi Yanai, Etsuji Kawaguchi, Yukiya Sugasaki, Tsuyoshi Kanegae, Bungo Kondo
-
Patent number: 5267852Abstract: A nonwoven fabric (31) having an annular shape in the horizontal cross-sectional view is put inside of a pressure-resistant wall (11) of a gas cylinder (2) adapted to contain liquefied petroleum gas (19). An outer surface (34) of the nonwoven fabric (31) is kept in contact with an upper portion of an inner surface (20) of the pressure-resistant wall (11). A lower section (33) of the nonwoven fabric (31) is adapted to suck up the liquefied petroleum gas (19) in its liquid phase portion (25) owing to capillary action, so that the sucked up liquefied gas can be brought into contact with the upper portion of the inner surface (20) of the pressure-resistant wall (11).Type: GrantFiled: July 28, 1992Date of Patent: December 7, 1993Assignee: Iwatani Sangyo Kabushiki KaishaInventor: Tsutomu Mizuno
-
Patent number: 5230889Abstract: A ginseng powder is produced as follows. Firstly, a ginseng harvested from a field is washed within at least 24 hrs. after harvest in the raw state. Then, the washed ginseng is dried under such a condition that it is not subjected to temperatures above 40.degree. C. After that, the dried ginseng is put in liquid nitrogen so as to have a low temperature brittleness. Subsequently the whole of the ginseng is crushed into powder at a time within a nitrogen gas atmosphere at an evaporation temperature of the liquid nitrogen.Type: GrantFiled: February 19, 1992Date of Patent: July 27, 1993Assignee: Iwatani Sangyo Kabushiki KaishaInventor: Mitsuyori Inoue
-
Patent number: 5212953Abstract: The present invention relates to an apparatus for preventing evaporation of liquefied gas in a liquefied gas reservoir used for cooling an energy dispersive spectrometer type X-ray detector (EDS detector) and its control method. A cold head of a cryogenic refrigerator is disposed in an upper opening of the liquefied gas reservoir, the cryogenic refrigerator is adapted to be put into automatic operation depending on temperature inside the liquefied gas reservoir, wherein the automatic operation mode of the cryogenic refrigerator is put into rest by remote control during the use of the EDS detector, while the cryogenic refrigerator is put into automatic operation with a previous alarm issued when the temperature inside the liquefied gas reservoir increases over a set temperature with the EDS detector being out of use, thereby allowing vaporized gas to be reliquefied with gas consumption reduced.Type: GrantFiled: September 13, 1991Date of Patent: May 25, 1993Assignees: Iwatani Sangyo Kabushiki Kaisha, Iwatani Plantech Kabushiki Kaisha, Jeol Ltd.Inventors: Etsuji Kawaguchi, Masato Adachi, Masayuki Taira, Eiichi Watanabe
-
Patent number: 5168710Abstract: The present invention is intended to provide a slush hydrogen production apparatus adapted to efficiently produce slush hydrogen having even particle diameters by means of an industrial procedure. A liquid hydrogen supply/discharge passage (2) is connected to the lower portion of the insulated closed container (1), an exhaust passage (4) and a helium gas supply passage (5) are connected to the upper portion of the insulated closed container (1), a heat exchanger (7) and a vacuum pump (9) are arranged in the exhaust passage (4) in that order from the side of the insulated closed container (1), a stirring means (16) is disposed within the insulated closed container (1) and the stirring means (16) is adapted to be driven from an outside of the insulated closed container (1).Type: GrantFiled: December 4, 1991Date of Patent: December 8, 1992Assignee: Iwatani Sangyo Kabushiki KaishaInventor: Jun Miyazaki
-
Patent number: 5110357Abstract: In a mold material for use in molding a titanium cast to be mounted into the mouth as a dental prosthesis, magnesia and phosphate are added as a binder to its main ingredient composed of alumina and zirconia.Type: GrantFiled: August 3, 1990Date of Patent: May 5, 1992Assignee: Iwatani Sangyo Kabushiki Kaisha (Iwatani International Corp.)Inventors: Akira Kuwano, Yoshimasa Kidowaki
-
Patent number: 4944324Abstract: In a fuel gas supply equipment with an abnormal offensive odor suppressing filter, there is provided a gas supply passage from a gas outlet of a gas container containing LP gas such as propane gas to a gas inlet of a gas burner. The gas supply passage is provided with a pressure regulating means and a filter mounting portion disposed on the upstream side of the pressure regulating means. A cotton-like filter is inserted into the filter mounting portion. The gas inlet of the filter mounting portion and the gas outlet thereof are intercommunicated through the filter.Type: GrantFiled: April 3, 1989Date of Patent: July 31, 1990Assignees: Iwatani Sangyo Kabushiki Kaisha, Central Sekiyu Gas Kabushiki KaishaInventors: Hideo Kajino, Kazuo Matsuo
-
Patent number: D446991Type: GrantFiled: July 26, 1999Date of Patent: August 28, 2001Assignee: Iwatani Sangyo Kabushiki KaishaInventors: Hitoshi Taniguchi, Hiroaki Hasegawa
-
Patent number: D295598Type: GrantFiled: July 12, 1985Date of Patent: May 10, 1988Assignee: Iwatani Sangyo Kabushiki KaishaInventor: Yukinobu Takase
-
Patent number: D336008Type: GrantFiled: May 31, 1991Date of Patent: June 1, 1993Assignee: Iwatani Sangyo Kabushiki KaishaInventor: Shingo Kamata
-
Patent number: D426662Type: GrantFiled: July 26, 1999Date of Patent: June 13, 2000Assignee: Iwatani Sangyo Kabushiki KaishaInventors: Hitoshi Taniguchi, Hiroaki Hasegawa