Otsuka Kagaku Kabushiki Kaisha

Matsushita Electric Industrial Co., Ltd.

Taiho Pharmaceutical Company Limited

Otsuka Chemical Co., Ltd.

Daihatsu Motor Company, Ltd.

Masatoshi Taniguchi

Hirohisa Tanaka

Michio Sasaoka

Hideo Tanaka

Yutaka Kameyama

Takashi Shiroi

Sigeru Torii

Takeshi Otsuka

Shigeru Torii

Ryo Kikuchi

Yuji Tada

Daisuke Suzuki

Nobukatsu Okuda

Ichiro Kawahara

Kiyotoshi Matsumura

Shinya Tanaka

Tatsushi Bannai

Norio Saito

Fumio Toda

Motoaki Tanaka

Hirofumi Uchida

Yoichi Nishioka

Mitsuo Akada

Akiyoshi Inubushi

Yoshifumi Nakacho

Shuji Masuda

Keiichi Ishida

Akihiro Shimabayashi

Toshiyuki Kohri

Yoshihisa Tomotaki

Akira Nakai

Shigemitsu Nagao

Mitio Sasaoka

Kenji Kase

Koji Mori

Kenji Kaze

Hideo Amo

Kouichi Tanaka

Motoaki Murakami

Hirofuni Uchida

Shiro Yamashita

Akira Suzuki

Ken Sonogi

A reproduced signal processor comprising sync block detecting means (), data information generating means (), first memory means (), memory writing means (), memory reading means () for parallel reading data of n frames (n is an integer of 2 or more satisfying &#x3b1;&#x3c;n) stored in the first memory means (), and transferring means () for transferring n pieces of transfer data after restructuring n pieces of frame data read out by the memory reading means () according to the data information or not restructuring them.

Reproduced signal processor

The present invention has an object to provide a flame-retardant epoxy resin composition excellent in heat resistance and moisture resistance. A flame-retardant epoxy resin composition relating to the present invention contains an epoxy resin (A), a phosphazene compound (B), an epoxy hardener (C) and an inorganic filler (D), wherein the phosphazene compound (B) and the epoxy hardener (C) are included in the range of 0.01 to 70% by weight and in the range of 0 to 70% by weight, respectively, relative to a total quantity of the epoxy resin (A), the phosphazene compound (B) and the epoxy hardener (C), and the inorganic filler (D) is included in the range of 0 to 95% by weight relative to a total quantity of the epoxy resin (A), the phosphazene compound (B), the epoxy hardener (C) and the inorganic filler (D), wherein the phosphazene compound (B) is at least one selected from the group consisting of (1) a cyclic and/or a chain phosphazene compound with a specific structure, (2) a polymer of the cyclic and/or the chain phosphazene compound; and (3) a reaction product of the cyclic and/or the chain phosphazene compound with one type of a compound selected from the group consisting of an epoxy compound, a phenol compound, an amine compound and an acid anhydride.

Flame-retardant epoxy resin composition, molded article thereof, and electronic part

Digital signal processing method

A granule of a compound comprising a nitrate or nitrite, wherein a part of the body of the granule has a protrusion, and an aggregate of the granules.

Nitric acid-based salt granule and aggregate thereof

A digital video cassette recorder reproduces signals which have been compressed to digital data and recorded in predetermined M tracks (M&gE;1) with helical scan in the unit of page consisting of N frames (N&gE;1). Further, position data have been added to the digital data on recording. On reproduction, the position data are detected to determine which reproduction position is reproduced, and a control signal to designate a field to be output is generated by observing the reproduction position during a frame period. A first storage device stores decoded data in the unit of N frames, while a second storage device delays the data a time of one field. By observing the reproduction situation with the position data, a memory controller controls reading from the first storage device according to the control signal, while a switch selects data to be output between data from the first storage device and data from the second storage device according to the control signal.

Apparatus reproducing signals on slow reproduction

A magnetic recording and reproducing apparatus includes a reading and writing head for writing data on data tracks formed on a recording tape and reading the data therefrom to produce a first reproduction data. A simultaneous reproducing head is provided for reading a second production data from the data track just being written or read by the reading and writing head. A delay unit delays the first signal by a predetermined phase difference factor to arrange the first and second reproduction data on the same time base. A determiner is also provided for selecting either of said first and second reproduction signals whose signal quality is better than the other.

Magnetic recording and reproducing apparatus with signal delay and

A penam derivative of the general formula ##STR1## wherein R.sup.1 means hydrogen, halogen, amino or protected amino; R.sup.2 means hydrogen, halogen, lower alkoxy, lower acyl, lower alkyl, hydroxy- or protected hydroxy-substituted lower alkyl, hydroxy or protected hydroxy, or R.sup.1 and R.sup.2 may jointly represent oxo; R.sup.3 means hydrogen or a carboxy-protecting group; R.sup.4 means hydrogen; R.sup.5 means a group of the formula --CH.sub.2 Y where Y means halogen, --N.sub.3, --ONO.sub.2, --OR.sup.6, --OCOR.sup.6, --SCSOR.sup.6, --SCSN(R.sup.6).sub.2, --SR.sup.6, --SO.sub.2 R.sup.6, --NHR.sup.6, --N(R.sup.6).sub.2 or a substituted or unsubstituted nitrogen-containing heterocyclic group having a free valence on nitrogen; R.sup.6 means a lower alkyl, aryl or heterocyclic group which is substituted or unsubstituted; or R.sup.4 and R.sup.5 may jointly represent .dbd.CH.sub.2 ; n means 0, 1 or 2; provided, however, that where R.sup.4 and R.sup.5 jointly represent .dbd.CH.sub.2, n is not equal to 0.

Penam derivatives

Lithium secondary battery of vanadium pentoxide and polyphosphazene

The present invention provides a thiazolinoazetidinone derivative represented by the formula ##STR1## wherein R.sup.1 is phenyl having or not having substituent(s), methyl having or not having substituent(s) or ##STR2## group, R.sup.3 being phenyl having or not having substituent(s), and R.sup.2 is a hydrogen atom or carboxylic acid protective group, and a process for preparing the same. The present invention further provides a process for preparing a 2-exo-methylenepenam derivative characterized by hydrolyzing the thiazoline ring of a thiazolinoazetidinone derivative of the above formula (1) to effect recyclization and obtain a 2-exo-methylenepenam derivative represented by the formula ##STR3## wherein R.sup.1 and R.sup.2 are as defined above.

Process for preparing thiazolino azetidinone and 2-exo-methylenepenam

Thiazolinoazetidinone derivative

The present invention provides a process for preparing a cephem derivative characterized in that an allenyl .beta.-lactam compound represented by the formula (1) ##STR1## wherein R.sup.1 is amino or protected amino, R.sup.2 is a hydrogen atom or lower alkoxyl, R.sup.3 is a hydrogen atom or carboxylic acid protecting group and X is the group --SO.sub.2 R.sup.4 or --SR.sup.4, R.sup.4 being substituted or unsubstituted aryl or substituted or unsubstituted nitrogen-containing aromatic heterocyclic group is reacted with a nucleophilic agent to obtain the derivative, the cephem derivative being represented by the formula (2) ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are as defined above, and Y is the residue of the nucleophilic agent.

Process for preparing cephem derivatives

The present invention provides a process for preparing a 2-exo-methylenepenam derivative represented by the formula (2), the process being characterized by reacting an allenyl .beta.-lactum compound represented by the formula (1) with a metallic reducing agent, in which R.sup.1, R.sup.2, R.sup.3 and X are defined in the specification. ##STR1##

Process for preparing 2-exo-methylenepenam derivatives

The present invention provides a process for preparing a 3-formylcephem derivative represented by the formula (2) ##STR1## which comprises oxidizing in the presence of oxygen a 3-halomethylcephem derivative represented by the formula (1) ##STR2## wherein R.sup.1 is amino group or protected amino group, R.sup.2 is hydrogen atom or a carboxylic acid protective group, X is halogen atom.

Process for preparing a 3-formylcephem derivative

A process for preparing a .beta.-lactam derivative of formula (2) and/or the corresponding enol tautomer, which includes oxidizing an alkenyl-substituted .beta.-lactam derivative of formula (1) in the presence of a ruthenium catalyst or a rhenium catalyst using a periodic acid: ##STR1## wherein R.sup.1 is a hydrogen atom, a C.sub.1-4 alkyl group or a C.sub.1-4 haloalkyl group, R.sup.2 is a hydrogen atom, a C.sub.1-4 alkyl group or a phenyl group which may have a substituent, A is a group selected from ##STR2## wherein R.sup.3 is an amino group or a protected amino group, and R.sup.4 -R.sup.8 are as defined in the application.

Process for preparation of .beta.-lactam derivative from an alkenyl

Disclosed is a method of producing a 3-exomethylenecepham of the formula ##STR1## wherein R.sup.1 is amino or substituted amino and R.sup.2 is a carboxy-protecting group comprising reacting a cephem of the formula ##STR2## wherein R.sup.1 and R.sup.2 are as defined above and X is halogen with lead metal while maintaining the pH of the reaction system at about 0.1 to 8. The cephem (I) may be reacted with a catalytic amount of lead metal or a lead compound in the presence of a metal having a greater ionization tendency than lead.

Method for production of 3-exomethylenecepham derivatives

Growing community of inventors

Osaka, Japan

Masatoshi Taniguchi