Asahi Kasei Kogyo Kabushiki Kaisha

Nissan Motor Company Limited

Asahi Kasei Kabushiki Kaisha

Akihiko Ikeda

Tetsuya Miyake

Kunihiko Takeda

Hideo Ai

Kazuo Imamura

Yoshio Matsuoka

Kimio Nishimura

Maomi Seko

Kiyokazu Sugiyama

Tsutomu Abe

Junichi Uchiyama

Hiroki Matsunae

Keisuke Yamamoto

Kazuhiro Mitamura

Nobuhiko Suga

Hisao Koike

Shinichirou Fujikawa

Tokio Sakurai

Takeshi Arai

Hideaki Takahashi

Takashi Furuya

Michihiro Sako

Satoshi Ogitani

Syunji Ueda

Akihiro Shijo

Masayuki Mizuno

Tsutae Akao

Kan-ichi Yokota

A method for manufacturing a sintered magnet includes molding a green compact formed by compacting a magnet powder by press-molding the magnet powder, the green compact forming an R&#x2014;Fe&#x2014;B based sintered magnet having Nd as the principal component and containing a rare earth element R, sintering the green compact by heating to a sintering temperature, so as to mold a sintered magnet, pressure molding the sintered magnet by heating to a temperature not exceeding the sintering temperature, so as to correct dimensions of the sintered magnet, and adjusting the texture of the sintered magnet by aging heat treatment using heated atmosphere produced when correcting the dimensions of the sintered magnet at a temperature not exceeding the temperature during the pressure molding.

Method for manufacturing sintered magnet

A workpiece cutting method basically includes providing a workpiece proximate to a first blade including a first cutting edge. The method further comprises moving a second blade including a second cutting edge in contact with the first blade such that the first and second cutting edges of the first and second blades cooperatively engage to cut the workpiece while maintaining the first and second cutting edges parallel to each other.

Workpiece cutting method

A cylindrical internal surface processing apparatus has an internal diameter measuring device and a controller. The internal diameter measuring device measures an internal diameter of an internal cylindrical bore formed in a base member to obtain a measurement result of the internal diameter of the internal cylindrical bore. The controller includes a surface roughening control section and a quality determining section. The surface roughening control section controls operation of a surface roughening equipment to form a rough surface section and an internal diameter measuring surface section on the internal cylindrical bore. The internal diameter measuring surface section is smoother than the rough surface section. The quality determining section determines if the rough surface section is acceptable to allow a subsequent thermally sprayed coating to be applied on the rough surface section based on the internal diameter measurement result at the internal diameter measuring surface section of the internal cylindrical bore.

Cylindrical internal surface processing apparatus

A flanged housing member is formed using a forming method and a forming device from a forming material having a pre-flanged forming portionis disposed at one end of a trunk portion. The entire external surface of the flanged housing member can be ironed with a sufficient degree of precision without mechanical machining. The forming material is held on one of a first die having an external forming surface and a second die having an internal forming surface. A sizing process is performed to at least form an internal surface of the trunk portion using the first and second dies. The pre-flanged forming portion is sandwiched and pressed between the first die and a flange-forming die to form a flange portion on the end of the trunk portion.

Flanged housing member, forming method and forming device

Before a thermally sprayed coating is deposited onto a cylindrical internal surface of a cylinder borerough surfaceis formed to increase the adhesion of the thermally sprayed coating. After forming the rough surface is completed, an internal diameter measurement surface that is smoother than the rough surface is formed on an axial end section of the internal cylindrical surface. The internal diameter of the cylinder bore is measured at the internal diameter measurement surface with an internal diameter measuring instrument. An appropriate thickness for the thermally sprayed coating is determined based on the measurement result.

Cylindrical internal surface with thermally spray coating

Polishing pad and polisher

Polymer/oxime ester/coumarin compound photosensitive composition

A curable composition comprising (a) a curable polyimide soluble in organic solvents and (b) a polymerization initiator as essential components, said polyimide consisting of recurring units represented by the formula ##STR1## wherein, each of X, X.sub.1, X.sub.2, X.sub.3 and X.sub.4 is a tetravalent carbocyclic or heterocyclic residue, each of Y.sub.1, Y.sub.2, and Y.sub.3 is a divalent carbocylic or heterocyclic residue, at least one of Z.sub.1 and Z.sub.2 is a residue having a reactive carbon-carbon double bond, and each of l, m, and n is an integer from 0 to 20, preferably from 0 to 10. The polyimide may include (a) polyacrylate compounds (b) bis-imide compounds (c) photosensitive polyimide precursors (d) oxime initiators (e) a 3 component sensitizer of a phenone compound, a mercapto compound, and an arylamine-alkanol, or mixtures of a,b,c,d, and e.

Tetramine derived polyimide with pendant unsaturation, and various

A process for preparing a polyamide which comprises polycondensing a dicarboxylic acid and a diamine by using a combination of at least one phosphine and at least one disulfide as the condensing agent.

Process for preparing polyamide with organic phosphine/organic disulfide

A process for preparing polyamides which comprises polycondensing dicarboxylic acids having the following general formula and diamines by using carbodiimides as the condensing agent. ##STR1## wherein X is a group having a valence of (m+2), and C.sub.6-20 carbocyclic group, C.sub.3-20 heterocyclic group, C.sub.2-20 alkyl group, or C.sub.2-20 alkenyl group, the group having at least one carbon-carbon double bond in the position of conjugating to carboxylic acid radical or the group having an .alpha.,.beta.-unsaturated ketone structure;

Polyamide preparation from polycarboxylic acid and polyamine with

Novel copolymers having a weight average molecular weight of 500 to 5,000,000 and comprising 1 to 99% by weight of a recurring unit represented by the formula (I), 1 to 99% by weight of a recurring unit represented by the formula (II) and 0 to 98% by weight of a recurring unit represented by the formula (III): ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group; X is a hydrogen atom, a methyl group or a phenyl group; Y is a hydrogen atom, a halogen atom, a methyl group, a phenyl group or a cyano group; and Z is a phenyl group, a phenyl group substituted by at least one alkyl group having 1 to 8 carbon atoms, a polycyclic aromatic hydrocarbon group having 10 to 20 carbon atoms, a cyano group, --COOR.sup.2 (in which R.sup.2 is an alkyl group having 1 to 20 carbon atoms or an aromatic hydrocarbon group having 6 to 14 carbon atoms), --COR.sup.3 (in which R.sup.3 is an alkyl group having 1 to 12 carbon atoms or an aromatic hydrocarbon group having 6 to 14 carbon atoms), a nitro group, a pyridyl group, ##STR2## (in which R.sup.3 has the same meaning as defined above), or a halogen atom. The above-mentioned copolymers are useful as resist materials which are sensitive to high-energy radiations.

Epoxy compounds, process for the preparation thereof and resist

The use of a hydrophobic, water-insoluble, granular porous organic polymer having an average pore diameter of 500 to below 5,000.ANG. has been found to be extremely effective for separating T cells from leukocytes when the latter is contacted with the porous organic polymer in the presence of an animal serum protein.

Method for separating T cells from leukocytes

A nitrogen-containing acrylic copolymer composition comprising:

Nitrogen-containing acrylic copolymer composition

A basic copolymer whose main chain is cross-linked which comprises about 6 to about 98% by weight of recurring units of Formula (A) or (B), ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, each represents a hydrogen atom or a hydrocarbon group selected from the group consisting of C.sub.1-20 alkyl groups, C.sub.3-10 cycloalkyl groups, C.sub.3-8 alkenyl groups, C.sub.6-15 aryl groups, C.sub.7-12 arylalkyl groups and C.sub.1-15 aminoalkyl groups; and X is an acid radical, and about 2 to about 94% by weight of cross-linked units based on the total weight of the recurring units of Formula (A) or (B) and the cross-linked units and, if desired, up to about 92% by weight of units of a monoethylenically unsaturated monomer or a conjugated monomer based on the total weight of the recurring units of Formula (A) or (B), the cross-linked units and the units of the monoethylenically unsaturated monomer or the conjugated monomer.

Novel basic cross-linked polymers

A novel protein adsorbent consisting essentially of a porous copolymer obtained by copolymerizing a monomer mixture comprising at least one cyano group-containing monomer and at least one cross-linkable monomer, said copolymer having an average pore diameter (d) of from 40 A to 9,000 A and a total pore volume of from 0.05.sqroot.X ml to 1.5.sqroot.X ml per gram of the copolymer in a dry state, in which X designates the weight proportion of said cross-linkable monomer expressed in terms of the percent by weight based on the total monomers. The present porous copolymer adsorbent has a remarkably high protein adsorbing capacity. The adorbent can advantageously be used for various purposes such as purification and separation of proteins, and removal of proteins. Copolymer-protein composites obtained by adsorption of proteins on the present porous copolymer also are industrially useful and have a wide variety of applications.

Growing community of inventors

Fuji, Japan

Akihiko Ikeda