Patents by Inventor Masao Okabe
Masao Okabe 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).
-
Patent number: 6118930Abstract: When modulating by an interleaved NRZI technique by inserting one bit per every m bits of input data series, the frequency characteristics of bit rows varying by the polarity ("0" or "1") of the bit to be inserted are compared, and the bit row closer to the desired frequency characteristic is selected as the output series, so that recording is effected by controlling the frequency characteristics of the digital signal.Type: GrantFiled: January 12, 1998Date of Patent: September 12, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shinji Hamai, Masao Okabe, Yasunori Kawakami
-
Patent number: 5892982Abstract: An external expansion bus interface circuit is provided for connecting a peripheral to a micro control unit to exchange digital information under an external expansion memory mode of the micro control unit. For this purpose, the eternal expansion bus interface circuit includes a means for storing a writing data. Address decoder and a strobe decoder are connected to the micro control unit to directly receive the writing data, an address strobe, and a write strobe. Then the address decoder and strobe decoder produce a write enable signal for enabling the memory to store the data at address designated thereby.Type: GrantFiled: November 27, 1996Date of Patent: April 6, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Makoto Mitsuda, Akihiko Nakamura, Katsuyuki Tamai, Masao Okabe, Tsutomu Miyoshi, Masafumi Sato, Junji Soga
-
Patent number: 5825567Abstract: When modulating by an interleaved NRZI technique by inserting one bit per every m bits of input data series, the frequency characteristics of bit rows varying by the polarity ("0" or "1") of the bit to be inserted are compared, and the bit row closer to the desired frequency characteristic is selected as the output series, so that recording is effected by controlling the frequency characteristics of the digital signal.Type: GrantFiled: July 2, 1996Date of Patent: October 20, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shinji Hamai, Masao Okabe, Yasunori Kawakami
-
Patent number: 5579182Abstract: When modulating by an interleaved NRZI technique by inserting one bit per every m bits of input data series, the frequency characteristics of bit rows varying by the polarity ("0" or "1") of the bit to be inserted are compared and the bit row closer to the desired frequency characteristic is selected as the output series, so that recording is effected by controlling the frequency characteristics of the digital signal.Type: GrantFiled: May 30, 1995Date of Patent: November 26, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shinji Hamai, Masao Okabe, Yasunori Kawakami
-
Patent number: 5028656Abstract: A resin composition consisting essentially of(A) a polyphenylene ether having added thereto an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride thereof (component A),(B) a polyphenylene sulfide (component B), and(C) a polyisocyanate compound (compound C), the weight ratio of component A to component B being from 5:95 to 95:5 and the amount of component C being from 0.01 to 10% by weight based on the total weight of components A and B; and molded articles therefrom.Type: GrantFiled: May 23, 1989Date of Patent: July 2, 1991Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Masao Okabe, Akikzau Amgai, Haruaki Eto, Yasuo Tanaka
-
Patent number: 5026764Abstract: A resin composition consisting essentially of(A) a polyphenylene ether having added thereto an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride thereof (component A),(B) a polyphenylene sulfide (component B), and(C) a polyisocyanate compound (component C),the weight ratio of component A to component B being from 5:95 to 95:5 and the amount of component C being from 0.01 to 10% by weight based on the total weight of components A and B; and molded articles therefrom.Type: GrantFiled: April 30, 1990Date of Patent: June 25, 1991Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Masao Okabe, Akikzau Amgai, Haruaki Eto, Yasuo Tanaka
-
Patent number: 4686131Abstract: A membrane for gas separation which comprises a silylated polyphenylene ether is disclosed. Said silylated polyphenylene ether contains a constituting unit containing an organosilane or siloxane group represented by the following formula in at least a part of the repeating unit thereof: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom or a group of the formula --Si(R.sub.5)(R.sub.6)(R.sub.7), wherein R.sub.5, R.sub.6 and R.sub.7 each represents an alkyl group; l and n each represents 0 or an integer from 1 to 3; and m represent an integer of from 1 to 3; with the proviso that R.sub.1, R.sub.2, R.sub.3 and R.sub.4 do not simultaneously represent hydrogen atoms.Type: GrantFiled: April 11, 1985Date of Patent: August 11, 1987Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masao Okabe, Masamichi Mizukami, Yoshihiko Sekine
-
Patent number: 4683255Abstract: A polyphenylene ether resin composition having excellent fire retardancy comprising(A) a polyphenylene ether resin, and(B) at least one phosphate compound selected from the group consisting of biphenyl phosphate compounds and naphthyl phosphate compounds.Type: GrantFiled: February 25, 1986Date of Patent: July 28, 1987Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masao Okabe, Akikazu Amagai
-
Patent number: 4663376Abstract: A polyphenylene ether resin composition comprising(A) a polyphenylene ether resin,(B) a vinyl aromatic resin, and(C) a phenylformamidine derivative in a heat stabilizing amount.Type: GrantFiled: September 13, 1985Date of Patent: May 5, 1987Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masao Okabe, Toshihiko Kobayashi
-
Patent number: 4614773Abstract: A polyphenylene ether resin composition containing (A) a polyphenylene ether resin, (B) an aromatic polyester resin, and (C) a phenoxy resin. The resin composition may further contain (D) an unsaturated carboxylic acid or (E) a vinyl copolymer derived from a styrene compound and an alpha,beta-unsaturated dicarboxylic acid anhydride as comonomer components. The resin composition has excellent mechanical strength, solvent resistance, oil resistance and moldability.Type: GrantFiled: January 9, 1985Date of Patent: September 30, 1986Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masao Okabe, Akikazu Amagai
-
Patent number: 4532306Abstract: A polyphenylene ether resin composition comprising(A) a polyphenylene ether resin and(B) poly(epsilon-caprolactone).Type: GrantFiled: October 16, 1984Date of Patent: July 30, 1985Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masao Okabe
-
Patent number: 4489186Abstract: A polyphenylene ether resin composition comprising(1) a polyphenylene ether resin,(2) an oxanilide represented by the following formula ##STR1## wherein R.sup.1 and R.sup.6 are identical or different and each represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or an alkoxy group having 1 to 15 carbon atoms, R.sup.2 and R.sup.7 are identical or different and each represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, R.sup.3 and R.sup.8 are identical or different and each represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and R.sup.4 and R.sup.5 are identical or different and each represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a dialkylaminoalkyl group with the alkyl moiety having 1 to 6 carbon atoms,(3) an organic phosphite, and(4) a hindered phenolic antioxidant.Type: GrantFiled: July 5, 1983Date of Patent: December 18, 1984Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Masao Okabe, Eiji Ukita
-
Patent number: 4472546Abstract: A polyphenylene ether resin composition comprising(A) a polyphenylene ether resin,(B) at least one compound selected from the group consisting of 2-(o-hydroxyphenyl)benzotriazoles represented by the following formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkoxycarbonylalkyl group, an aryl group or an aralkyl group, and X represents a halogen atom,and 2-hydroxybenzophenones represented by the following formula (II) ##STR2## wherein R.sup.5 represents a hydrogen atom, a hydroxyl group or an alkoxy group, R.sup.6 represents a hydrogen atom or a hydroxyl group, R.sup.7 represents a hydrogen atom or a sulfonic acid group, and R.sup.8 represents a hydrogen atom, an alkyl group or an aromatic acyl group,(C) an organic phosphite, and(D) a sterically hindered phenol.Type: GrantFiled: July 5, 1983Date of Patent: September 18, 1984Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Masao Okabe, Eiji Ukita
-
Patent number: 4427814Abstract: A polyphenylene ether resin composition having improved heat stability and good color, said composition comprising a polyphenylene ether resin matrix, and dispersed therein, a diphosphonite of the formula ##STR1## wherein R.sub.1 groups are identical or different and each represents a linear or branched alkyl group having 1 to 10 carbon atoms.Type: GrantFiled: March 15, 1983Date of Patent: January 24, 1984Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Masao Okabe, Yukio Sasaki, Kozo Ishiyama
-
Patent number: 4392744Abstract: Method and apparatus for determining angular and transversal displacements of a shield machine and a succeeding pipe relative to a pre-determined schedule central axis of a tunnel to be constructed by pipe-jacking tunneling which includes providing on the shield machine a first light emitter which emits rearwardly a light beam along the central longitudinal axis of the shield machine and a reference position on the axis of the shield machine, projecting the light beam to a pair of targets, each having a scale and being provided in a succeeding pipe spaced from each other by a predetermined distance along the central longitudinal axis of the succeeding pipe to form light spots on the targets, projecting to the pair of targets a light beam emitted from a second light emitter along the scheduled central axis of the tunnel to be constructed to form further light spots on the targets with the second light emitter being located at the rear portion of the tunnel, and reading the light spots and the further light spoType: GrantFiled: March 27, 1981Date of Patent: July 12, 1983Assignee: Okumura CorporationInventors: Tetsuro Tatsuhama, Masao Okabe
-
Patent number: 4383066Abstract: A polyphenylene ether resin composition having improved heat stability, said composition comprising a polyphenylene ether resin matrix, and dispersed therein, a phosphonic acid or its derivative of the formula ##STR1## wherein R.sub.1 represents an unsubstituted or substituted phenyl or naphthyl group, or a linear or branched alkyl group with 1 to 18 carbon atoms, or a group of the following formula (a) ##STR2## R.sub.2 and R.sub.3 are identical or different and each represents hydrogen atom, a metal, an unsubstituted or substituted phenyl group, or an alkyl group with 1 to 10 carbon atoms; and R.sub.4 is a divalent hydrocarbon group with 2 to 10 carbon atoms.Type: GrantFiled: April 7, 1981Date of Patent: May 10, 1983Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Masao Okabe, Kozo Ishiyama
-
Patent number: 4341879Abstract: A polyphenylene ether resin composition having improved heat stability, said composition comprising a polymer matrix composed of a polyphenylene ether resin and a vinyl aromatic resin, and dispersed in the polymer matrix, at least one compound selected from the group consisting of(1). 2-(3,5-di-C.sub.1 -C.sub.10 alkyl-4-hydroxyanilino)-4,6-di-C.sub.5 -C.sub.15 -alkylthio-1,3,5-triazines,(2). .omega.,.omega.'-thiodi(C.sub.2 -C.sub.6 polymethylene)-bis[3-(3,5-di-C.sub.1 -C.sub.10 alkyl-4-hydroxyphenyl)-polymethylene(C.sub.1 -C.sub.4)-carboxylates],(3). N,N'-C.sub.2 -C.sub.10 polymethylene-bis[(3,5-di-C.sub.1 -C.sub.10 alkyl-4-hydroxyphenyl)-polymethylene(C.sub.1 -C.sub.4)carboxamides], and(4). tetrakis-{methylene-[(3,5-di-C.sub.1 -C.sub.10 alkyl-4-hydroxyphenyl)-polymethylene(C.sub.1 -C.sub.4)carboxylate]}methanes.Type: GrantFiled: March 11, 1981Date of Patent: July 27, 1982Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Masao Okabe, Masatugu Matunaga, Kozo Ishiyama
-
Patent number: 3954904Abstract: Polyphenylene ether resins are stabilized with a substituted dicarboxylic acid dihydrazide.Type: GrantFiled: October 30, 1974Date of Patent: May 4, 1976Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Eiichi Yonemitsu, Akitoshi Sugio, Takanari Nawata, Masao Okabe, Masatsugu Matsunaga, Masaharu Kimura, Norio Sayama
-
Patent number: 3952072Abstract: Stabilized polyphenylene ether type resin composition obtained by compounding a polyphenylene ether type resin with one or more of stabilizer-component such as those respectively (a) a high molecular phosphorous ester having at least three phosphorous ester-bondings per molecule, (b) a high molecular phosphorous ester as said above and dicarboxylic acid dihydrazide substitution product, (c) a high molecular phosphorous ester as said above and steric hindered phenols and (d) a high molecular phosphorous ester as said above, steric hindered phenols and dicarboxylic acid dihydrazide substitution product; and, if desired, boron oxide.Type: GrantFiled: November 14, 1974Date of Patent: April 20, 1976Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Eiichi Yonemitsu, Akitoshi Sugio, Masanobu Masu, Masaharu Kimura, Masao Okabe, Norio Sayama, Masatsugu Matsunaga
-
Patent number: 3933941Abstract: A thermoplastic blended composition comprising 15-80% by weight of polyphenylene ether, 5-60% by weight of a styrene resin and 2-15% by weight of an aromatic polycarbonate. The composition has superior heat resistance, fatigue resistance and processability.Type: GrantFiled: May 1, 1974Date of Patent: January 20, 1976Assignee: Mitsubishi Gas Chemical Co., Ltd.Inventors: Eiichi Yonemitsu, Akitoshi Sugio, Masanobu Masu, Masaharu Kimura, Masao Okabe