Patents Assigned to Aktiengesellschaft
  • Process and equipment for the fractional desublimation of solids in vapor form from gas/vapor mixtures
    Patent number: 4867763
    Abstract: Solids are fractionally desublimed in vapor form from a gas/vapor mixture by providing a nozzle through which a gas/vapor mixture containing a solid is accelerated, the nozzle being provided with a concentric opening which allows a cooling gas flowing laterally at a high velocity to impinge upon and mix with the gas/vapor mixture flowing through the nozzle in the mixing zone of the nozzle thereby forming a gas/solid mixture, passing the gas/vapor mixture through the nozzle and the cooling gas through the concentric opening such that the angle at which the cooling gas emerges from the concentric opening into the flow of the gas/vapor mixture to the direction of flow of the gas/vapor mixture ranges from 0.17 pi rad to 0.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: September 19, 1989
    Assignee: Huels Aktiengesellschaft
    Inventor: Helmut Scharf
  • Preparation of N-phenyl(pyridyl) sulfonyldiamides
    Patent number: 4868308
    Abstract: A process for the preparation of N-phenyl(pyridyl)sulfonyldiamides by reacting a 2-aminobenzoic acid (nicotinic acid) derivative with sulfur trioxide, chlorosulfonic acid or an adduct of sulfur trioxide with a tertiary amine in the presence of a diluent and of a tertiary amine, and reacting the resulting sulfamate with a primary amine and a phosphorus halide, or by reacting a 2-aminobenzoic acid (nicotinic acid) derivatives with an N-alkyl(cycloalkyl)sulfamic acid or a salt of this acid in the presence of a diluent and of a phosphorus halide.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: September 19, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Merkle, Albrecht Mueller, Gerhard Hamprecht, Gernot Reissenweber
  • Electric battery
    Patent number: 4865928
    Abstract: For the effective removal of Joule heat from the interior of a high-performance lead battery, especially those with a fixed electrolyte, at least one of the negative grid plates which participate in the development of the electrodes are provided with a U-shaped tube which surrounds and is attached to the grid, in place of the usual grid frame, and through which a coolant circulates. Especially advantageous due to its capacity to conduct heat is a combination of a lead-coated, copper mesh grid and a copper tube, with a residual strip of unexpanded copper sheeting attached to the grid mesh along the remaining upper section of the frame, and developing the conducting lug.
    Type: Grant
    Filed: October 5, 1988
    Date of Patent: September 12, 1989
    Assignee: Varta Batterie Aktiengesellschaft
    Inventor: Gerolf Richter
  • Photographic recording material
    Patent number: 4865940
    Abstract: A color photographic recording material contains a dispersion of hardened particles of a complex coacervate (packet emulsion) in at least one layer of binder, which particles are hardened with a hardener corresponding to the following formula I ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and each denotes an alkyl group with 1 to 8 carbon atoms or an aryl or aralkyl group optionally substituted with an alkyl group having 1 or 2 carbon atoms or with a halogen atom or R.sup.1 and R.sup.2 together denote the atoms required for completing a heterocyclic ring, e.g. a piperidine or morpholine ring, optionally substituted with an alkyl group having 1 or 2 carbon atoms or with a halogen atom,R.sup.3 denotes a hydrogen atom or an alkyl group having 1 or 2 carbon atoms andn represents 0 or 2.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: September 12, 1989
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Karl-Wilhelm Schranz, Gunther Schenk
  • Hair dye composition
    Patent number: 4865620
    Abstract: Hair dye compositions based on oxidation hair dyes which contain developer components, coupling components and oxidation components, characterized in that they contain one or more aminopyrrole derivatives of the formula: ##STR1##
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: September 12, 1989
    Assignee: Ruetgerswerke Aktiengesellschaft
    Inventors: Winfried Orth, Wolfgang Weiss, Hans W. Kleffner
  • Thermosetting dental materials
    Patent number: 4866146
    Abstract: Thermosetting dental materials which contain a peroxycarboxylic acid in addition to other components customarily contained in dental materials and in addition to at least one monomeric ester of methacrylic acid as polymerization catalyst. These dental materials are distinguished from those which contain an organic peroxide as polymerization catalyst by a distinctly better stability during storage.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: September 12, 1989
    Assignee: Degussa Aktiengesellschaft
    Inventors: Ralf Janda, Manfred Dankowski
  • Circuit arrangement of a self protecting power switch
    Patent number: 4866556
    Abstract: In power switches, conductive coupling of the control signal inputs to the power switching stage, and to the load to be switched, can result in impairment of control function. Moveover these power switches known in the art, have the disadvantage that the drive circuit and power switching stage must lie at the same potential. An improved self protecting power switch includes a first drive unit and a second drive circuit that are connected together via a pulse transformer. The first drive unit generates successive pulse trains in response to a control signal. A second drive unit regenerates square wave signals for the control of the power switching stage.
    Type: Grant
    Filed: November 10, 1987
    Date of Patent: September 12, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventor: Ernst Hebenstreit
  • Solid mixture of nucleated and nonnucleated polyamides
    Patent number: 4866115
    Abstract: A solid mixture contains as essential components(A) from 40 to 99% by weight, based on the total weight of (A) and (B), of a nonnucleating thermoplastic polyamide and(B) from 1 to 60% by weight, based on the total weight of (A) and (B), of a thermoplastic polyamide which contains a nucleating agent, and in addition(C) from 0 to 60% by weight, based on the total weight of (A)+(B)+(C), of fibrous or particulate fillers.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: September 12, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Betz, Eckhard M. Koch, Christoph Plachetta, Gerd Blinne, Karl Hahn
  • Process for the preparation of alkyloligoglycosides
    Patent number: 4866165
    Abstract: Alkyloligoglycosides are prepared by glycoside alcoholysis of lower alkylglycosides with alcohols. The average degree of oligomerization is adjusted by the use of catalytic amounts of an acid.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: September 12, 1989
    Assignee: Huls Aktiengesellschaft
    Inventor: Harald Luders
  • Computer tomography apparatus with a closed circulation cooling system
    Patent number: 4866743
    Abstract: A computer tomography apparatus has a stationary part in which a live ring is rotatably seated, the live ring carrying heat generating components such as an x-ray source and a radiation detector, which are disposed on opposite sides of an opening in which an examination subject is received. The stationary part and the live ring limit a sealed annular channel therebetween, the channel having at least one inlet opening and at least one outlet opening for a gaseous coolant. A conduit, which also contains a circulating coolant, has various portions disposed to carry away heat from the heat generating components, and another portion disposed within the annular channel so that the heat can be removed therefrom by the gaseous coolant.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: September 12, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventor: Hans-Juergen Kroener
  • Band coating apparatus
    Patent number: 4864967
    Abstract: In an apparatus for the coating of bands on both sides with zinc in a vacuum, consisting of a housing (32) surrounding a coating chamber (28) and a winding chamber (45), a removable cover disposed on at least one side of the housing (32) for the hermetic closure of the coating chamber and winding chamber (28, 45), a winding system with rotatably mounted pulley rolls, guide rolls and tension rolls (5 to 17), with coating rolls (18, 53) and a take-up roll and supply roll (35', 37') and with coating sources (19, 54) disposed in the coating chamber, a tube (33) leading into the winding chamber (45) is provided for the introduction of a gas which prevents any sticking of the coated band (50) on the take-up roll (35').
    Type: Grant
    Filed: January 12, 1988
    Date of Patent: September 12, 1989
    Assignee: Leybold-Aktiengesellschaft
    Inventor: Siegfried Kleyer
  • Connecting element for connecting a line to a component
    Patent number: 4865361
    Abstract: A connecting element for connecting a fluid line to a component which can be acted upon fluidically, comprising a C-shaped retaining clamp and a bore which passes through at an angle to the retaining clamp is attached to a connection bore of the component in such a way that a push-in connection piece of the fluid line, which is pressed into the retaining clamp transversely to its longitudinal axis, is at the same time inserted through the bore and into the connection bore for forming a fluidic push-in connection.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: September 12, 1989
    Assignee: Mercedes-Benz Aktiengesellschaft
    Inventors: Heinz Koukal, Helmut Merk
  • Aromatic polyester from substituted hydroquinone and biphenyl dicarboxylic acid
    Patent number: 4866154
    Abstract: This invention relates to new aromatic polyesters based on substituted 4,4'-biphenyl dicarboxylic acids and substituted hydroquinones, to a process for their preparation from hydroquinone derivatives and terephthalic acid and to their use for the preparation of molecularly reinforced polymers.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: September 12, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Heitz, Hans-Werner Schmidt
  • High-temperature storage battery
    Patent number: 4865929
    Abstract: In order to uniformly distribute a coolant, e.g. air, over gaps between electrochemical cells in high-temperature storage batteries, it has already been proposed to place an open chamber above the groups of cells from which the coolant is preferably conveyed to the cells through holes in a distributor panel. The object of the invention is to even further improve the distribution of the coolant. In order to achieve a uniform, quasi-flat incident flow profile for the coolant over the distributor panel, an antechamber is provided for receiving the coolant from at least one inlet opening and for passing the coolant through several throttle locations into an open chamber and then through holes in the distributor panel to the cells. The invention can be applied to sodium/sulphur batteries, for example.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: September 12, 1989
    Assignee: Asea Brown Boveri Aktiengesellschaft
    Inventor: Gismar Eck
  • Apparatus for applying thin layers onto a substrate
    Patent number: 4865713
    Abstract: Thin layers are deposited on a substrate such as a silicon substrate in series of evacuatable chambers into each of which an inert gas is admitted. In the case of a reactive sputtering deposition, a reactive gas is also admitted. Contamination between neighboring chambers with the reactive gas is prevented, and the chambers are rapidly charged with new reactive gas to achieve a stable gas flow by providing an inlet system including a pair of shut-off valves, and a closable flow governor, the shut-off valves and the flow governor being actuated in synchronism.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: September 12, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Armin Kohlhase, Georg Birkmaier, Friedrich Wienerroither
  • Coupling arrangement for coupling light of a semiconductor laser diode into a multimode glass fiber
    Patent number: 4865409
    Abstract: A coupling arrangement for coupling light of a semiconductor laser diode into a multimode glass fiber. The laser diode emits light along a first optical axis, and the glass fiber receives this light through a light entry surface and transmits it along a second optical axis. The received light forms a maximum intersection angle with the second optical axis which angle is greater than it would be in case both axes coincided. In a preferred embodiment, the laser light is emitted in form of a wedge having a plane of symmetry which bisects the angle of aperture of this wedge and contains the first optical axis. Best results are obtained in this embodiment, if the angle of aperture is about 10.degree. and the maximum intersection angle is up to 8.degree..
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: September 12, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Ludwig Althaus, Walter Proebster
  • Hydrophilic copolymers, the use thereof as biomedical materials and contact-optical articles produced therefrom
    Patent number: 4866148
    Abstract: The invention relates to new cross-linked copolymers of N-vinyl pyrrolidone, N-alkyl-N-vinyl carboxylic acid amides, methacrylates and optionally further copolymerizing monomers of a specific composition. the copolymers have a water absorption capacity of up to about 80% by weight, based on the hydrated state, and are suitable for the production of shaped articles which are in contact with living tissue in use. Examples include soft contact lenses and scleral lenses of high mechanical strength, in particular thin to very thin lenses for prolonged wear.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: September 12, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Otto-Christian Geyer, Frank Wingler
  • Electric furnace arrangement
    Patent number: 4866731
    Abstract: An electric furnace includes a furnace vessel covered by a furnace lid liftable and lowerable by a lid lifting mechanism and pivotable from a position above the furnace vessel into a position lateral of the furnace vessel and back by a lid pivoting mechanism. A lid supporting framework is pivotably mounted lateral of the furnace vessel and includes at least one lid bracket extending over the furnace vessel for lifting, lowering and pivoting the furnace lid. In order to be able to pivot the lid bracket without furnace lid and without necessitating manipulations to be carried out at the furnace lid for the purpose of exchanging the lid or the lid core, the lid bracket is detachably connected to the furnace lid by at least one coupling means, with a coupling piece of the coupling means being arranged on the lid bracket and a coupling counter piece of the coupling means being arranged on the furnace lid.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: September 12, 1989
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Ernst Zajicek, Ernst Riegler, Hubert Hammerschmid
  • High pressure decorative laminates
    Patent number: 4865807
    Abstract: A high pressure laminate comprising a plurality of heat molded sheets impregnated with duromeric synthetic resins characterized in that several of these sheets form on at least one surface of the laminate a heat-shapable surface layer (2,3) while the remaining sheets form a non-heat-shapable region which includes a core layer of the laminate.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: September 12, 1989
    Assignee: Isovolta Osterreichische Isolierstoffwerke Aktiengesellschaft
    Inventors: Georg Petershofer, Horst Felzmann
  • Impact resistant thermoplastic molding materials
    Patent number: 4866129
    Abstract: Impact resistant thermoplastic molding materials containing a styrene polymer modified with rubber to be impact resistant, a hydrogenated styrene containing block copolymer and a polyphenylene ether as well as optional additives in which 50 to 98 percent by weight of the particles of the flexible component of the impact resistant styrene polymer have an average particle diameter of equal to or less than 1.0 micron and 2 to 50 percent by weight of the particles of the flexible have an average particle diameter of equal to or greater than 2 microns.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: September 12, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Adolf Echte, Franz Haaf, Herbert Naarmann