1
Takao Ebinuma: Method for dumping and disposing of carbon dioxide gas and apparatus therefor. NKK Corporation, Frishauf Holtz Goodman & Woodward, November 16, 1993: US05261490 (241 worldwide citation)

A method for dumping carbon dioxide gas into the ground of the sea bottom comprises injecting carbon dioxide gas into the ground of the sea bottom to fix the carbon dioxide gas in the ground of the sea bottom. A method for dumping carbon dioxide gas into the ground of permafrost regions comprises bo ...


2
Edward O Banker, Teruo Suzuki, Erich F Klementich, Jeffrey K Bouche: Buttress-threaded tubular connection. NKK Corporation, Marubeni Tubulars, Conley Rose & Tayon, October 25, 1994: US05358289 (93 worldwide citation)

The present invention pertains to an improvement in buttress-threaded tubular connections. In particular, the connection is improved by controlling the tubular member thread pitch diameter tolerance to .+-.0.0015 inch, to provide a thread bearing contact pressure which is relatively constant over th ...


3
James E Vasbinder: Method for determining direction of travel of a wave front and apparatus therefor. NKK Corporation, Digital Dynamics, H L Ledeen Associates, Frishauf Holtz Goodman & Woodward, March 21, 1995: US05398542 (89 worldwide citation)

Direction of travel from a wave front in a pipeline is determined with two pressure sensors spaced relatively near to each other so that the site from which the wave front emanated is not located therebetween. For each sensor, a determination is made as to whether a detected signal has exceeded a ne ...


4
Mitsuaki Uesugi, Masaichi Inomata, Isamu Komine: Method and apparatus for measuring a three-dimensional curved surface shape. NKK Corporation, Michael N Meller, April 7, 1992: US05102223 (72 worldwide citation)

A method and apparatus for measuring a three-dimensional curved surface shape based on a new measuring principle that a surface of an object to be measured is coded with information relating to a slit light which is used as a medium and moved or rotated at a constant speed. The manner in which a lin ...


5
Nobuyoshi Takeuchi: Nonvolatile memory device with verify function. NKK Corporation, Nixon & Vanderhye, March 23, 1999: US05886927 (69 worldwide citation)

One verify cell is connected to one word line, together with a plurality of array cells, and has a threshold value almost the same as the array cells. A write voltage or an erase voltage is applied to the array cells, setting the voltage applied to the verify cell at a small value, thereby electrica ...


6
Hiroshi Gotou, Mamoru Kondo, Hirofumi Abe: Memory cells and memory devices with a storage capacitor of parasitic capacitance and information storing method using the same. NKK Corporation, Burns Doane Swecker & Mathis, April 22, 1997: US05623442 (62 worldwide citation)

An object of the present invention is to provide a DRAM of a special form, a non-volatile memory cell incorporating the DRAM, and a semiconductor device which incorporates a DRAM structure and a non-volatile memory cell and where data can be written and erased with high accuracy. The semiconductor m ...


7
Akio Nagamune, Kouichi Tezuka, Isamu Komine: Distance measuring method and apparatus therefor. NKK Corporation, Michael N Meller, July 12, 1994: US05329467 (54 worldwide citation)

A distance measuring method and an apparatus therefor, in which used are first and second pseudo random signals which are equal to each other in pattern but slight different from each other in frequency. A first time-series pattern obtained by multiplying the first pseudo random signal by the second ...


8
Tsutomu Shikada, Yotaro Ohno, Norio Inoue, Masatsugu Mizuguchi, Keiji Tomura, Takeshi Furukawa, Takuya Kadowaki, Sadayoshi Iwabuchi, Takashi Ogawa, Masami Ono, Kaoru Fujimoto: Catalyst for manufacturing hydrogen or synthesis gas and manufacturing method of hydrogen or synthesis gas. NKK Corporation, Flynn Thiel Boutell & Tanis P C, March 26, 2002: US06361757 (54 worldwide citation)

This invention provides a catalyst for producing hydrogen gas from a mixed gas comprising dimethyl ether and water vapor or carbon dioxide gas, which comprises copper, iron, cobalt, palladium, iridium, platinum, rhodium, or nickel as an active component, and a method of producing synthesis gas or hy ...


9
Tsutomu Kawamura, Mitsuaki Uesugi, Hirohiko Yanagita, Noboru Kawasaki, Hisashi Ito: Three-dimensional (3-D) coordinate measuring method, 3-D coordinate measuring apparatus, and large-structure building method. NKK Corporation, Frishauf Holtz Goodman & Chick P C, May 6, 2003: US06559931 (49 worldwide citation)

A 3-D coordinate measurement is performed in such a way that an electrooptical distance-measuring device is used to measure a linear distance to a target point set on a surface of a measurement object, an angle measuring device is used to measure shifted angles of an optical axis of the electrooptic ...


10
Masato Hirasaka, Yoshiaki Fujiwara: Process of making a fiber-reinforced plastic sheet having a gradient of fiber bundle size within the sheet. NKK Corporation, Sughrue Mion Zinn Macpeak & Seas, April 28, 1992: US05108678 (48 worldwide citation)

This invention relates to a fiber reinforced plastic sheet having a gradient layer structure wherein the number of reinforcing fibers continuously varies and a process for producing the same by spreading a mixture of the fibers different in the number of filaments over the traveling zone of a convey ...