Patents by Inventor Toshisuke Kitakohji
Toshisuke Kitakohji has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5994144Abstract: When adsorbed gas is analyzed after metal, ceramics or metallic salt has been left in an environmental atmosphere for a predetermined period of time, an average concentration of specific gas over a long period of time can be accurately measured with an inexpensive small apparatus. Especially, porous metal or ceramics (transition metal oxide) are excellent in selective adsorption properties for NO.sub.x, porous ceramics (rare earth element oxide) are excellent in selective adsorption properties for CO.sub.2, and a specific chloride such as copper chloride and silver chloride is excellent in selective adsorption properties for SO.sub.2. A test kit accommodating such test pieces in a case, a protective case for the test kit to put the test kit into practical use, an umbrella and a forced air blowing unit are also disclosed.Type: GrantFiled: January 4, 1994Date of Patent: November 30, 1999Assignee: Fujitsu LimitedInventors: Eiichi Nakajima, Yasuo Udoh, Tsutomu Iikawa, Toshisuke Kitakohji, Teruo Motoyoshi, Takashi Furusawa, Shiori Yamazaki, Masao Nakayama, Michiko Satoh, Shigeru Fukushima, Mayumi Itabashi
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Patent number: 5985213Abstract: When adsorbed gas is analyzed after metal, ceramics or metallic salt has been left in an environmental atmosphere for a predetermined period of time, an average concentration of specific gas over a long period of time can be accurately measured with an inexpensive small apparatus. Especially, porous metal or ceramics (transition metal oxide) are excellent in selective adsorption properties for NO.sub.x, porous ceramics (rare earth element oxide) are excellent in selective adsorption properties for CO.sub.2, and a specific chloride such as copper chloride and silver chloride is excellent in selective adsorption properties for SO.sub.2. A test kit accommodating such test pieces in a case, a protective case for the test kit to put the test kit into practical use, an umbrella and a forced air blowing unit are also disclosed.Type: GrantFiled: June 7, 1995Date of Patent: November 16, 1999Assignee: Fujitsu LimitedInventors: Eiichi Nakajima, Yasuo Udoh, Tsutomu Iikawa, Toshisuke Kitakohji, Teruo Motoyoshi, Takashi Furusawa, Shiori Yamazaki, Masao Nakayama, Michiko Satoh, Shigeru Fukushima, Mayumi Itabashi
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Patent number: 5750406Abstract: There is provided a test piece by which NO.sub.x, present in an environment may be visually observed apart from the influence of other gases, and with which qualitative and quantitative analysis may be performed. The test piece has a layered structure prepared by vacuum deposition a metal thin-film (Ag, Pt, Au, etc.) on a metal substrate (Cu, Zn, etc.). The rough amounts of NO.sub.x, SO.sub.x and NH.sub.3 in the environment are determined on the basis of the corrosion products (nitrates, etc.) produced when NO.sub.x, SO.sub.x and NH.sub.3 are collected after the test piece has been exposed to the environment for a prescribed period of time.Type: GrantFiled: May 1, 1995Date of Patent: May 12, 1998Assignee: Fujitsu LimitedInventors: Eiichi Nakajima, Yasuo Udoh, Tsutomu Iikawa, Toshisuke Kitakohji, Teruo Motoyoshi, Takashi Furusawa, Shiori Yamazaki, Masao Nakayama, Michiko Satoh, Shigeru Fukushima, Mayumi Itabashi
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Patent number: 4600685Abstract: A patterning process is provided wherein a material to be etched is coated with a ladder type organosiloxane resin, the coated resin is irradiated with energy rays according to a desired pattern, the irradiated resin is subjected to a development treatment, and then, the material is etched by using the resin left after the development as a mask. The ladder type organosiloxane resin used is represented by the formula: ##STR1## wherein each R.sub.1 is independently selected from alkyl (Cl-6) groups, and phenyl and halophenyl groups, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are independently selected from hydrogen, alkoxy (Cl-3) groups, a hydroxyl group and alkyl (Cl-3) groups, and n is a number giving a Mw of about 1,000 to about 1,000,000. The patterning process can be advantageously employed for the production of electronic devices.Type: GrantFiled: May 29, 1985Date of Patent: July 15, 1986Assignee: Fujitsu LimitedInventors: Toshisuke Kitakohji, Shiro Takeda, Minoru Nakajima, Hiroshi Tokunaga
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Patent number: 4464455Abstract: A dry-developing negative resist composition consisting of (a) a polymer of a monomer of the following formula I or II or a copolymer of a monomer of the following formula I with a monomer of the following formula II, ##STR1## in which R represents alkyl of 1 to 6 carbon atoms, benzyl, phenyl, or cyclohexyl and (b) 1% to 70% by weight, based on the weight of the composition, of a silicone compound. A negative resist pattern can be formed on a substrate by a process comprising coating the substrate with the resist composition, exposing the resist layer to an ionizing radiation, subjecting the resist layer to a relief treatment, and developing a resist pattern on the substrate by treatment with gas plasma.Type: GrantFiled: June 7, 1982Date of Patent: August 7, 1984Assignee: Fujitsu LimitedInventors: Yasuhiro Yoneda, Kenroh Kitamura, Jiro Naito, Toshisuke Kitakohji
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Patent number: 4345020Abstract: A cross-linkable positive-working ionizing radiation-resist or ultraviolet ray-resist polymer composition including: in polymerized form,(a) units derived from a methacrylic acid ester of the formula:CH.sub.2 .dbd.C(CH.sub.3).COORwhere R is an alkyl or haloalkyl group having from 1 to 6 carbon atoms, benzyl or cyclohexyl,(b) units derived from a monoolefinically unsaturated carboxylic acid having from 3 to 12 carbon atoms and from 1 to 3 carboxyl groups, and(c) units derived from methacrylic acid chloride.The amount of the units (c) in the polymer composition is such that the number of moles of the units (b), multiplied by the number of the carboxyl group or groups in each of the units (b), ranges from about 1 to about 20% based on the total number of moles of the units (a), (b) and (c); the amount of the units (c) ranges from about 0.05 to about 3.Type: GrantFiled: December 3, 1980Date of Patent: August 17, 1982Assignee: Fujitsu LimitedInventors: Yasuhiro Yoneda, Toshisuke Kitakohji, Kenro Kitamura
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Patent number: 4276365Abstract: PCT No. PCT/JP78/00022 Sec. 371 Date July 7, 1979 Sec. 102(e) Date July 2, 1979 PCT Filed Nov. 6, 1978 PCT Pub. No. WO79/00284 PCT Pub. Date May 31, 1979A cross-linkable positive-working ionizing radiation-resist or ultraviolet ray- resist polymer composition including: in polymerized form,(a) units derived from a methacrylic acid ester of the formula:CH.sub.2 .dbd.C(CH.sub.3).COORwhere R is an alkyl or haloalkyl group having from 1 to 6 carbon atoms, benzyl or cyclohexyl,(b) units derived from a monoolefinically unsaturated carboxylic acid from 3 to 12 carbon atoms and having from 1 to 3 carboxyl groups, and(c) units derived from methacrylic acid chloride.The amount of the units (c) in the polymer composition is such that the number of moles of the units (b), multiplied by the number of the carboxyl group or groups in each of the units (b) ranges from about 1 to about 20% based on the total number of moles of the units (a), (b) and (c); the amount of the units (c) ranges from about 0.05 to about 3.Type: GrantFiled: July 2, 1979Date of Patent: June 30, 1981Assignee: Fujitsu LimitedInventors: Yasuhiro Yoneda, Toshisuke Kitakohji, Kenro Kitamura
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Patent number: 4273856Abstract: PCT No. PCT/JP78/00021 Sec. 371 Date July 2, 1979 Sec. 102(e) Date July 7, 1979 PCT Filed Nov. 6, 1978 PCT Pub. No. WO79/00283 PCT Pub. Date May 31, 1979A cross-linkable positive-working ionizing radiation-resist or ultraviolet ray-resist polymer composition comprising, in polymerized form,(a) from about 70 to about 99% by mole of units derived from a methacrylic acid ester of the formula:CH.sub.2 .dbd.C(CH.sub.3). COORwhere R is an alkyl or haloalkyl group having from 1 to 6 carbon atoms, a benzyl group or a cyclohexyl group,(b) from about 1 to about 20% by mole of units derived from methacrylamide, and(c) from about 0.05 to about 20% by mole of units derived from methacrylic acid chloride;each amount of the units (a), (b) and (c) being based on the total moles of the units (a), (b) and (c).Type: GrantFiled: July 2, 1979Date of Patent: June 16, 1981Assignee: Fujitsu LimitedInventors: Yasuhiro Yoneda, Toshisuke Kitakohji, Kenro Kitamura
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Patent number: 4267258Abstract: A negative type resist is provided for deep ultraviolet light lithography. This resist comprises a polymer of a diallyl ester of a dicarboxylic acid having a degree of dispersion of 3 or less, which is given by the ratio of a weight-average molecular weight Mw to a number-average molecular weight Mn. This deep UV resist can produce a fine detail resist pattern having a high resolution, and it has a high sensitivity to irradiating the coated film of the polymer on a substrate with deep UV light followed by development.Type: GrantFiled: December 10, 1979Date of Patent: May 12, 1981Assignee: Fujitsu LimitedInventors: Yasuhiro Yoneda, Kenro Kitamura, Jiro Naito, Toshisuke Kitakohji