Mitsui Toatsu Chemicals, Incorporated

Fujifilm Corporation

Kazuhiro Terada

Tadatoshi Honda

Shinji Kiyono

Makoto Kotani

Takeshi Tsuda

Tadamitsu Kiyoura

Fujio Matsuda

Akihide Kudoh

Akihiro Hashiguchi

Yasuo Kogure

Takazo Kato

Takashi Jimbo

Tomoyuki Ueno

A clip unit includes: a clip body having a pair of arm parts; and a fastening ring arranged in the outside of the clip body and configured to maintain the arm parts in the closed state, in which the clip body includes a connection base section connecting the base end side of the pair of arm parts, and a connection tail section provided on the connection base section to extend opposite to the arm parts and connected to the front end of a transmission member, and the connection base section has a flat part perpendicular to the axial direction of the fastening ring, and the arm parts and the connection tail section are connected on a side of the flat part.

Clip unit, ligation device using the same, and method for fabricating the clip unit

Each of the clip unitsincludes a clip bodyhaving a pair of arm partsthat can ligate the biological tissue and a fastening ringthat accommodates the clip body, and the plurality of clip unitsare disposed in series within the distal end of the outer sheath member. Each of the fastening ringsincludes a connecting mechanismconsisted by a locking memberthat connects the adjacent fastening ringseach other and a fitting support, the manipulation wireengaged with the locking memberis pulled to release the connection of the fastening ringsby the connecting mechanism

Ligation device and clip unit used therein

A clip unit for ligating a biological body includes: a clip body having a pair of arm parts; and a fastening ring arranged in an outside of the clip body, and configured to fasten the arm parts, in which: the fastening ring includes a flap part configured to expand diametrically outward from the fastening ring, and a flap retaining unit configured to retaining an expansion extent of the flap part at a given extent.

Clip unit and ligation device using the same

An image forming apparatus which can efficiently perform image forming processing to a recording medium and achieve improvement in production efficiency. In the image forming apparatus in which the recording medium is loaded onto a stage member at a loading position, the image is formed in the recording medium while the stage member passes through an image forming unit, and the recording medium in which the image has been formed is unloaded from the stage member at an unloading position, two stage members are provided. The image forming apparatus includes upper and lower circulating means in which one of the two stage members is moved below the image forming unit from the unloading position to the loading position while the other stage member passes through the image forming unit with the recording medium loaded thereon.

Image forming apparatus

A method for selectively preparing dimethylamine and monomethylamine, while the production of trimethylamine is inhibited to a sufficiently low level. The method comprises carrying out a gaseous reaction of methanol and ammonia by the use of a mordenite modified with a silylating agent by a silylation treatment in a liquid phase. According to the present invention, recycling trimethylamine is unnecessary, and the amount of steam or the like to be used can be decreased.

Method for preparing methylamines

A method for preparing an unsaturated compound mainly comprising monoolefins, or a mixture of .alpha., .beta.-unsaturated nitriles and monoolefins comprises coming a mixed gas which comprises paraffins and oxygen, or paraffins, oxygen and ammonia in contact with a catalyst which comprises (1) an oxide of phosphorus and (2) at least one oxide selected from the group consisting of indium oxide and tin oxide or comprises, in addition to the foregoing catalytic components, (3) at least one oxide selected from the group consisting of vanadium oxide, tungsten oxide and molybdenum oxide. The method makes it possible to prepare monoolefins, or a mixture of .alpha., .beta.-unsaturated nitriles and monoolefins in high yield and high selectivity from cheap starting materials, parafins.

Method for preparing unsaturated compounds

Disclosed herein is to react an aniline and an ethylene glycol at a superatmospheric pressure in preparing an indole by subjecting the aniline and ethylene glycol to a gas-phase catalytic reaction in the presence of a catalyst, thereby improving the selectivity of the reaction and the service life of the catalyst.

Preparation process for indoles

Disclosed herein is a preparation process for an indole, which process comprises subjecting an N-(.beta.-hydroxy)-alkylaniline, in the presence of a catalyst and at a super-atmospheric pressure, to a gas-phase catalytic reaction. The present process improves the selectivity of the reaction and the service life of the catalyst.

Preparation of indoles by cyclization

In a process for preparing an indole by reacting an aniline with a diol, a catalyst the activity of which has been reduced through its use in the reaction is brought into contact with an inert gas containing 5 vol. % or less of oxygen so that the catalyst is regenerated for its repeated utilization. The activity of the regenerated catalyst is enhanced further when it is subjected to a reducing treatment for activation upon its reutilization.

Preparation process indoles

A process for the preparation of indoles which comprises reacting aniline or a derivative thereof with a 1,2-glycol in the presence of a catalyst comprising silver supported on a carrier having a specific surface area of not less than 10 m.sup.2 /g.

Process for the preparation of indoles

Preparation process of indole

A process for the preparation of indole and derivatives thereof wherein an aniline is reacted with a 1,2-glycol in the vapor phase, the liquid phase or a mixed vapor-liquid phase. A sulfide or selenide or cadmium and/or zinc are used as the catalyst for this reaction. The present invention makes it possible to prepare indole and derivatives thereof in a single step by using inexpensive compounds as the starting materials.

Growing community of inventors

Kanagawa, Japan

Kazuhiro Terada