Abstract: The present invention provides an easily employed and economical process for removing substantially all of the metals from vinylphenol polymers by dissolving the vinylphenol polymer in a solvent and contacting the solution with a strong acidic cation exchange resin. In this way, vinylphenol polymers of high purity are attained, with a metal content which is virtually eliminated or substantially reduced.

Abstract: Recently, vinylphenol polymers have received special attention as materials for photoresists, since these materials have excellent transmittance of deep ultraviolet light in the neighborhood of 248 nm. Although particularly useful in this regard, vinylphenol polymers usually contain metal impurities, while photoresists must have high transmittance and extremely low metal content. As a result, vinylphenol polymers satisfying these requirements have not been available on industrial scale. In the present invention, a process for producing such purified vinylphenol polymers, both economically and easily, is realized. In the process of this invention, the vinylphenol polymer solution is hydrogenated and the hydrogenated solution is contacted with a strongly acidic cation exchange resin. In this way, substantially metal-free vinylphenol polymers are obtained.

Abstract: A power seat lifter device for an automotive seat assembly has electrically powered servo systems for adjusting height position at a front end portion and a rear end portion of the vehicular seat. The servo systems are concentrically arranged along one side of the vehicular seat so as to form enough space for permitting lowering of the seat cushion height.

Abstract: A power seat lifter arrangement has a drive mechanism for driving a seat cushion for adjustment of the height level, which drive mechanism is mounted on an upper rail of a seat slide. The drive mechanism is separated into two parts, one is for adjusting the height level at the front portion of the seat cushion, and the other is for adjusting the height level at the rear portion of the seat cushion.

Abstract: A power seat arrangement has concentrically arranged drives for a seat slide mechanism, a seat lifter mechanism and a reclining mechanism in a space defined in the vicinity of one rear end corner of a seat cushion.

Abstract: To minimize the width of a seat reclining device provided with a Taumel mechanism (planetary gear type angle adjusting mechanism), a motor unit is disposed on an inside surface of a base frame and within a seat cushion, and a motor output gear is disposed on an opposite outside surface of the base frame. Further, an outer gear of Taumel mechanism is formed in the base frame; an inner gear of the Taumel mechanism is formed in a reclining arm in mesh with the outer gear; and the reclining arm is disposed on the inside surface of the base frame and the reclining gear is disposed on the opposite outside surface of the base frame. Further, a shock absorbing member is disposed at the reclining gear to effectively absorb shock generated when the seat back is tilted to its extreme position stoppers.

Abstract: A heat-exchanging pipe having an inside surface formed with a plurality of ribs for enhancing turbulence of fluid flowing through the pipe. Each rib has an upstanding face portion formed on an upstream side of the rib and an inclined face portion descending from an upper end of the up-standing face portion in a downstream direction. The pipe is manufactured by roll forming a substantially flat piece of sheet metal material to form the ribs and then curling and joining ends of the sheet metal to form a substantially cylindrical pipe with the ribs on the inside surface thereof.

Abstract: A soft decision decoding method which decodes a code having redundant bits added to information data bits and transmitted as an error correcting code and in which the received code is decoded bit by bit to produce a received word and reliability information for respective digits at which the received word and each of candidate code words disagree with each other is summed up. The receiving electric field level is detected for each digit of the received code, and the reliability information is obtained from the detected receiving electric field level.

Abstract: A method for the production of reformed p-vinylphenol polymers which are lightened in color comprising treating a p-vinylphenol polymer under heating at about 150.degree. C. to about 350.degree. C. in the presence of an amine, and if optionally, in the additional presence of an acid compound and/or a reducing agent, and if necessary, in the additional presence of an inert solvent.

Abstract: Recombinant vector plasmids containing a DNA fragment coding for human interferon-.beta. inserted downstream from a tryptophan promoter are useful for transformation of microorganisms such as Escherichia coli which transformants produce human interferon-.beta..

Abstract: A door installation and a locking device used therein. The door installation consisting of a door provided with the body of a lock a of the locking device, and frame members fitted with a receiving plate thereof. The body of lock has a bolt built-in. This bolt is held optionally in the half-projecting position between the wholly projecting position and the door-opening position by handling operating units. The bolt in turn puts a controlling means in motion, whereby it is possible to make an electric circuit operate automatically ON or OFF, which electric circuit is arranged to interpose in itself electric appliances, for example, such as lighting apparatuses being disposed indoors or outdoors, therefore giving practical effect to the simplification of operating the lighting on-and-off and to the power saving, and further contributing to the safety problem through preventing overheating and leakage caused by the possible neglect of not turning lighting off.

Abstract: A process is described for converting glycol dialkyl ether without substantial formation of olefin oligomers by reaction with water, comprising reacting a feed glycol di-tertiary alkyl ether represented by structural formula (A) with water using a strongly acidic cation-exchange resin as a catalyst and a reaction temperature of from 40.degree. C. to 150.degree. C. under a pressure of from 1 to 70 kg/cm.sup.2 (absolute pressure) in a molar ratio of water/feed glycol di-tertiary alkyl ether represented by the structural formula (A) of from 0.

Abstract: Ethylene glycol mono-t-butyl ether is produced by contacting a starting mixture of feed materials comprising ethylene glycol di-t-butyl ether and ethylene glycol with a strongly acidic cation-exchange material, thereby to react said ethylene glycol and ethylene glycol di-t-butyl ether to produce ethylene glycol mono-t-butyl ether; the reaction is carried out at about 30.degree. to 130.degree. C. under an atmospheric pressure or an increased pressure; the molar ratio of the feed ethylene glycol to the feed ethylene glycol di-t-butyl ether is about 1:0.01 to 1:20; the feed material may be a mixture comprising ethylene glycol di-t-butyl ether, ethylene glycol and at least one member selected from the group consisting of ethylene glycol mono-t-butyl ether, diisobutylene, and triisobutylene; also the reaction can be carried out by either a batch process or a continuous flowing process.

Abstract: A recording head is disclosed which comprises an array of pin electrodes of copper wires and a plurality of pairs of auxiliary electrodes. Two lead frames are mounted to sandwich the array of pin electrodes, with one end of each lead frame serving as auxiliary electrode regions and the other end serving as lead terminals. Standing studs are planted on a printed circuit board for common connection of electrically conductive wires which connect to the pin electrodes at their tip portions and pass through the spacing between the two adjacent lead terminals.

Abstract: An improved process for producing ethylene glycol mono-tert-butyl ether by reacting ethylene glycol with isobutylene in the presence of a catalyst of strongly acidic cation-exchange material is disclosed which enables the production of ethylene glycol mono-tert-butyl ether in a high yield while suppressing the formation of by-product ethylene glycol di-tert-butyl ether by previously adding ethylene glycol di-tert-butyl ether to the reaction system and conducting the reaction at temperatures of about 60 to 130.degree. C.