Abstract: For an HEMT component, in particular on the basis of GaN, it is proposed, for the purpose of reducing field spikes in the conduction channel, in a partial section of the conduction channel between gate electrode and drain electrode, to set the sheet resistance of the conduction channel such that it is higher than in adjacent regions. Various measures for subsequently increasing the sheet resistance in an area-selective manner are specified.

Abstract: For an HEMT component, in particular on the basis of GaN, it is proposed, for the purpose of reducing field spikes in the conduction channel, in a partial section of the conduction channel between gate electrode and drain electrode, to set the sheet resistance of the conduction channel such that it is higher than in adjacent regions. Various measures for subsequently increasing the sheet resistance in an area-selective manner are specified.

Abstract: A deep soaking tub and shower combination apparatus having a side entry door and a built-in seat with armrests to allow a person to enter from the side through a hinged door with a seal that becomes tighter as the tub fills. The door has a rotating locking mechanism with a plurality of locking dogs and a lockable handle. The apparatus provides a safer tub and shower for the elderly and those persons with a limited range of bodily movement.

Abstract: In an apparatus for the surface treatment of material to be treated by means of a treatment liquid, in particular a band pickling plant, with a vessel (1) receiving the treatment liquid (F), through which the material (S) to be treated can be conveyed, with a lid (2) with which the vessel (1) can be tightly sealed, with an inlet and outlet opening (4, 5) through which the material (S) to be treated enters into and exits from the vessel (1), and with suction openings (9a, 11a) through which the evaporated treatment liquid (F) can be sucked off from the vessel (1), the quantity of the gas to be discharged is reduced in accordance with the invention and, simultaneously, the danger of damaging the material (S) to be treated is reduced without impairing the performance of the apparatus in such a way that in the zone of the inlet and outlet opening (4, 5) of the vessel (1) one inlet chamber and one outlet chamber (9, 11) are separated from the inner space (8) of the vessel (1) by at least one shut-off partition (7,

Abstract: A semiconductor laser device comprises a plurality of layers of semicondung materials, first contact means providing electrical contact to a basal layer of the device and second contact means providing electrical contact to an upper layer of the device, with at least one layer disposed between the basal layer and the upper layer being selected to be sufficiently thin that size quantization occurs, i.e. that a semiconductor device with a quantum well structure is created. The second contact means comprises a first strip-like contact overlying a first lasing region of the device and a second strip-like contact overlying a second lasing region of the device. The light losses associated with photons generated by laser action in the first region are intentionally made different from the light losses associated with photons generated by laser action in the second region which permits laser action at two distinct wavelengths in a monolithic device.

Abstract: In an apparatus capable of drying metallic belts or strands of varying widths, a hot air blowing system is arranged such that the effective width of the hot-air flow is selectively adjusted according to the width of each belt intended to be dried. The otherwise present but now excess hot air produced when narrower belt widths are dried is then directed to the suction or inlet side of the air blower to thereby recover otherwise lost heated air. This recycled heated air is redirected back to the air blower to thereby conserve energy at the heat exchanger which is used to heat the air. The quantity of hot air passing per unit time corresponding to a decreased belt width may also be adjusted by means of a valve of the blower system, thereby lowering the heating energy needed to be supplied to the heat exchanger.

Abstract: The abrasiveness of a pigment or printing ink is reduced by incorporation of one or more finely divided substances which are insoluble in printing inks and have a Mohs hardness of from 4.5 to 8, suitable compounds being iron powder, compounds of iron, zirconium, silicon and magnesium, aluminum silicates, oxides of manganese, tin and cerium, or mixtures of these. The printing inks obtained cause substantially less, or virtually no, abrasion of gravure printing cylinders.

Abstract: Compounds of the formula ##STR1## in which K is ##STR2## Ar.sup.1 is phenyl; phenyl substituted by chlorine, methoxy, ethoxy, methyl, acetylamino or benzoylamino; or ##STR3## Ar.sup.2 is phenyl; or phenyl substituted by chlorine, methyl or sulfamoyl,T.sup.1 is methyl or carbamoyl,T.sup.2 is cyano or carbamoyl,Z is hydrogen, chlorine, bromine or trifluoromethyl,Z.sup.1 is hydrogen, chlorine, or bromine, andR is phenyl; phenyl substituted by chlorine, bromine, hydroxy, methoxy, ethoxy, C.sub.1 to C.sub.4 alkyl, cyano, carbamoyl, nitro, phenyl, sulfamoyl, N-phenylsulfamoyl, acetylamino or benzoylamino; naphthyl; N-phenylphthalimidyl; or pyridyl.These compounds are dyes having mostly pigmentary character and are eminently suitable for coloring printing inks, surface coatings and resins.

Abstract: Compounds of the formula ##STR1## in which K is the radical of a coupling component;X is hydrogen, chloro, bromo, methyl or nitro; andY is hydrogen, chloro, bromo or methyl.The compounds are eminently suitable as pigments for coloring printing inks, surface coatings and resins with exceptional fastness properties.

Abstract: An azo pigment of the formula: ##STR1## in which R is hydrogen or methyl;R.sup.1 is cyano or carbamoyl;R.sup.2 is hydrogen, chloro, bromo, methyl, methoxy, ethoxy or cyano;R.sup.3 is hydrogen, chloro, bromo, methyl, methoxy, ethoxy, cyano, carbomethoxy, carbamoyl, sulfamoyl or methylsulfonyl; andR.sup.4 is hydrogen, chloro, bromo, methyl, methoxy or carbomethoxy.The compounds are eminently suitable as pigments in printing inks, surface coatings or plastics.

Abstract: Dyes of the formula: ##STR1## in which D is the radical of a diazo component;R.sup.1 is hydrogen, chloro, bromo, methoxy or ethoxy;R.sup.2 and R.sup.3 independently of one another are hydrogen, chloro, bromo, methyl, ethyl, trifluoromethyl, nitro, methylsulfonyl, ethylsulfonyl, phenylsulfonyl, unsubstituted or N-substituted carbamoyl or sulfamoyl, carboxylic ester, unsubstituted or substituted C-acylamino or phthalimidyl; orR.sup.2 and R.sup.3 together form a radical of the formula: ##STR2## The dyes are eminently suitable for coloring printing inks, surface coatings and resins with excellent fastness properties.

Abstract: A monoazo dye or pigment of the formula: ##STR1## in which D is the radical of the diazo component, preferably a diazotized compound of the aminoanthraquinone, aminophthalimide or aniline series;X is --NH or a direct bond; andY is --NH, --CONH, --NHCO or a direct bond; andWherein the rings A and B may contain from one to three substituents such as chloro, bromo, methyl, ethyl, methoxy, ethoxy, cyano, nitro, alkoxycarbonyl, trifluoromethyl, methylsulfonyl and optionally N-substituted carbamoyl or sulfamoyl radicals. The dyes or pigments are eminently suitable for coloring for example printing inks, surface coatings and resins because of their color strength and very good fastness properties.

Abstract: The production of dichlorobenzoic acids by reaction of the diazonium compound of a dichloroaminobenzoic acid with an aqueous alcohol solution of specific concentration. The compounds which can be prepared according to the process of the invention are valuable starting materials for the production of pharmaceutical substances, dyes and pesticides.