Patents Represented by Law Firm Keil & Witherspoon
  • Patent number: 4448080
    Abstract: For the purpose of monitoring the formation and propagation of cracks in machine parts and components, especially in the rotating shafts of prime movers and mechanical equipment, at least one hole is drilled in the uncracked section of the component, this drilled hole intersecting the plane of the crack which is to be expected and being filled with a gas or a liquid, the gas or liquid being adjusted to a pressure above the ambient pressure, and the drilled hole being provided with a closure with respect to the environment and being connected, via a line, to an instrument for indicating a fall in the pressure of the medium present in the drilled hole.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: May 15, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Dressel, Johannes Greven, Arnulf Jeck, Rudolf Magin, Guenther Nick, Paul Schaffarczyk, Guenther Weiss
  • Patent number: 4448761
    Abstract: Acicular ferrimagnetic iron oxides are prepared by a process in which iron (III) oxide hydroxide consisting essentially of lepidocrocite is reduced at from 350.degree. to 600.degree. C. by means of an organic compound which is a synthetic polymer with a molecular weight of from 3,000 to 40,000 to give magnetite, which, if desired, is subsequently partially or completely oxidized with an oxygen-containing gas at from 200.degree. to 450.degree. C.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: May 15, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wilhelm Sarnecki, Jenoe Kovacs, Werner Loeser, Peter Rudolf, Guenter Vaeth
  • Patent number: 4448643
    Abstract: A process for isolating isobutene from C.sub.4 -hydrocarbon mixtures containing isobutene by reacting the mixture with a primary alcohol in the presence of an acid condensing agent, to form the tertiary ether, separating off the unconverted hydrocarbons and decomposing the tertiary ether in the presence of an acid catalyst at an elevated temperature, wherein a primary C.sub.3 - or C.sub.4 -alcohol is used and the temperature at which the reaction mixture leaves the etherification stage, in which the tertiary ether is formed, is lower than the mean temperature in the etherification stage.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: May 15, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Lindner, Klaus Volkamer, Ulrich Wagner
  • Patent number: 4448960
    Abstract: Novel dichloroacetamides of the formula (I) ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, m, n, p and q have the meanings given in the description.The compounds are antagonists which increase the toleration, by crops, of herbicidal acetanilides. Herbicides containing the dichloroacetamides of the formula I in combination with acetanilides may be used for controlling undesired plant growth in Indian corn and cereals.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: May 15, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Rohr, Hanspeter Hansen, Peter Plath, Bruno Wuerzer
  • Patent number: 4447448
    Abstract: A wood preservative comprises a mixture ofA. N-cyclohexyl-N-methoxy-2,5-dimethyl-furan-3-carboxamide andB. tris-(N-cyclohexyl-diazeniumdioxy)-aluminum.A process for treating wood with this mixture is also described.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: May 8, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Reuther, Hans-Volker Borck
  • Patent number: 4447610
    Abstract: 10-Substituted 5-cyanomethylene-dibenzo[a,d]-cycloheptenes, their pure cis- and trans-isomers, their N-oxides and their pharmaceutically tolerated addition salts with acids, processes for their preparation, therapeutic agents containing these compounds and their use as drugs, especially as sedatives, hypnotics or tranquilizers.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: May 8, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerd Steiner, Hans P. Hofmann, Horst Kreiskott, Hans-Juergen Teschendorf, Dieter Lenke
  • Patent number: 4447255
    Abstract: New agents for regulating plant growth, especially for reducing the height of plants, containing a mixture of a quaternary substituted thianium or ammonium salt and a phosphonic acid derivative.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: May 8, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard P. Schott, Hans Lang
  • Patent number: 4447356
    Abstract: The present invention provides bioactive peptides of generic formula ##STR1## These peptides are extremely potent inhibitors of synaptic transmission at the neuromuscular junction, while at the same time lacing demonstrable inhibition of either nerve or muscle action potential propagation. The peptides are termed conotoxins herein. Naturally occurring conotoxins include conotoxin GI, GIA and GII. In conotoxin GI, U is Glu, V.sub.4 is Asn, V.sub.5 is Pro, V.sub.6 is Ala, W is Gly, X is Arg, Y is His, Z is Tyr, V.sub.12 is Ser and R is --NH.sub.2. Conotoxin GIA is identical to GI except R is --Gly--Lys--NH.sub.2. Conotoxin GII is identical to GI except that V.sub.4 is His, Z is Phe, and X is Lys. Conotoxin MI is identical to GI except that U is Gly-Arg, X is Lys and Y is Asn.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: May 8, 1984
    Inventors: Baldomero M. Olivera, Lourdes J. Cruz, William R. Gray, Jean E. F. Rivier
  • Patent number: 4447520
    Abstract: Acylphosphine oxides of the general formula ##STR1## where R.sup.1 is methyl or ethyl, R.sup.2 is a branched or straight-chain alkyl radical or chlorine, alkoxy or hydrogen, R.sup.3 and R.sup.4 are identical or different, and are each alkyl, alkoxy, alkylthio or chlorine and R.sup.5 is hydrogen, chlorine, alkoxy, alkylthio or alkyl, may be used as photoinitiators in photopolymerizable materials.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: May 8, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Henne, Anton Hesse, Manfred Jacobi, Gunnar Schornick, Rudolf Vyvial, Klaus Holoch
  • Patent number: 4447538
    Abstract: A microorganism containing a recombinant DNA transfer vector having the coding sequences for human chorionic somatomammotropin.
    Type: Grant
    Filed: February 5, 1982
    Date of Patent: May 8, 1984
    Assignee: Regents of the University of California
    Inventors: Howard M. Goodman, John Shine, Peter H. Seeburg
  • Patent number: 4446089
    Abstract: A melt of synthetic material is forced through orifices of a die plate, and the resulting strands of melt are led into a trough, where they travel in counter-current to a stream of cooling water. At the end of the trough, the strands are discharged, for further processing. The bottom of the trough merges into a vertical pipe and the melt strands are led into this pipe and out again, in a variable loop, in order to obtain the desired length of cooling path.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hugo Strehler, Guenter Valentin, Werner Hoerauf
  • Patent number: 4446277
    Abstract: A thermoplastic molding material based on a styrene polymer which has been made impact-resistant, and on a polyphenylene ether, wherein the impact-resistant styrene polymer comprises a soft component which has a mean particle diameter of greater than 0.3 .mu.m and contains an acrylic ester polymer as the elastomeric component. The novel molding materials possess improved flow and give moldings having improved aging resistance.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Adolf Echte, Franz Haaf, Juergen Hambrecht, Herbert Naarmann
  • Patent number: 4446253
    Abstract: Fine-celled foams are produced by a process in which a styrene polymer is melted, the melt is mixed with a volatile blowing agent and a nucleating agent under superatmospheric pressure, the mixture is let down to atmospheric pressure, and the foam is cooled. The nucleating agent employed comprises from 0.02 to 2% by weight of the calcium salt of a long-chain fatty acid, and from 0.01 to 1% by weight of a finely divided, inorganic substance which is insoluble in the styrene polymer, a mixture of calcium stearate and magnesium oxide being preferred.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Hahn, Heinz Weber, Wolfgang Guenther, Bernhard Schillinger, Reinhold Weber
  • Patent number: 4444942
    Abstract: A bath composition for cataphoretic electrocoating of conductive surfaces contains coating agents which have been rendered soluble or dispersible with acid, contain basic nitrogen groups and carry groups of the general formulae (1) and (11) ##STR1## and, optionally, also groups of the general formulae (III) and/or (IV) ##STR2## where R.sup.1 and R.sup.2 are each alkyl, hydroxyalkyl or alkoxyalkyl, R.sup.3 and R.sup.4 are each hydrogen or methyl, R.sup.5 and R.sup.6 are each hydrogen, alkyl or a divalent radical of a polymer molecule which is bonded to a phenol or phenol ether, n.sup.1 is 1, 2 or 3 and n.sup.2 is 1 or 2, and where the oxygen bonded to the phenyl radical is either in the form of the OH group or etherified.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Fritz E. Kempter, Eberhard Schupp, Gunther Sabelus
  • Patent number: 4444634
    Abstract: Polyadducts/polycondensates which can be diluted with water when protonated with an acid and which contain basic nitrogen groups are obtained by the polyaddition reaction of(A) a Mannich base obtained from(a) a monophenol and/or a polyphenol,(b) one or more dialkylamines of the formula ##STR1## where R.sup.1 and R.sup.2 are each alkyl or alkoxyalkyl, or are linked to one another to form a 5-membered or 6-membered ring, and(c) formaldehyde with(B) an epoxy resinand contain groups, which are bonded to aromatic rings, of the general formula ##STR2## and may or may not contain groups of the general formula ##STR3## where R.sup.3 and R.sup.4 are each alkyl, hydroxyalkyl or alkoxyalkyl, or are linked to one another to form a 5-membered or 6-membered ring, and R.sup.5 and R.sup.6 are each hydrogen or methyl.These products are useful as binders for the cathodic electrocoating of metallic articles.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Fritz E. Kempter, Eberhard Schupp
  • Patent number: 4442306
    Abstract: Tertiary amines are produced by reacting a secondary amine having identical or different substituents, in particular a readily volatile amine, with a primary or secondary monohydric or polyhydric alcohol, in particular a sparingly volatile fatty alcohol, over a copper catalyst formed directly from copper formate under the reaction conditions.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Mueller, Hartmut Axel, Arnold Wittwer
  • Patent number: 4442299
    Abstract: New bromoepoxy-cyclohexenes and their derivatives, which are starting compounds for units used to synthesize natural compounds, e.g. cyclitols or aminocyclitols.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Prinzbach, Reinhard Schwesinger, Reinhold Keller
  • Patent number: 4442157
    Abstract: Heat-foamable fireproofing compositions contain thermosetting phenolic resins, thermally decomposable organic nitrogen compounds, eg. dicyandiamide, an ammonium salt and a carbohydrate or polyhydric alcohol, and on decomposition form a stiff carbonaceous foam.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Norbert Marx, Reimer Gottsche
  • Patent number: 4442271
    Abstract: The disclosure is directed to an improvement in the gas phase polymerization of propylene using a Ziegler-Natta catalyst in the presence of hydrogen wherein the gaseous propylene is withdrawn from the reactor, cooled and condensed and returned as a liquid to the reactor in order to regulate the polymerization temperature. The amount of the gaseous phase in the condenser-cooler-accumulator system is kept constant by regulating the amount of gaseous phase returned to the reactor.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Rau, Helmut Klamann, Peter Hennenberger
  • Patent number: 4442263
    Abstract: Thermoplastic molding materials contain a copolymer A and a graft copolymer B. The copolymer A is a hard component comprising one or more copolymers of styrene and/or .alpha.-methylstyrene with from 20 to 40% by weight of acrylonitrile.The graft copolymer B comprises one or more crosslinked acrylate polymer with a mean particle size of 0.5-0.8 .mu.m (d.sub.50 value of the cumulative mass distribution), a particle distribution, expressed by the ratio ##EQU1## in the range Q.gtoreq.0.6, and a glass transition temperature Tg below 0.degree. C. A mixture of styrene and acrylonitrile in a weight ratio from 88:12 to 65:35 is grafted onto this rubber.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Juergen Hambrecht, Rudolf Stephan, Heinz-Juergen Overhoff, Josef Schwaab, Claus Bernhard, Johann Swoboda, Adolf Echte