Patents by Inventor Hans U. Sieveking

Hans U. Sieveking has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Water-soluble pesticidal formulations
    Patent number: 4737520
    Abstract: A water-soluble pesticidal formulation approximately comprising in grams per liter 10 to 500 of at least one pyrethroid, 10 to 200 of a non-polar solvent having a solubility in water at 20.degree. C. of 0.01 to 15 g/liter, 20 to 500 of at least one non-ionic emulsifier, 5 to 250 of at least one anionic emulsifier, up to 300 of a solvent having a solubility in water at 20.degree. C. of at least 30 g/liter, up to 5 of a dyestuff, up to 50 of auxiliaries and up to 900 of water. The formulation will dissolve in water to give clear solutions.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: April 12, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Arundev H. Naik, Hans U. Sieveking, Wilhelm Stendel
  • Pesticidal formulations
    Patent number: 4731378
    Abstract: The invention relates to pesticidal formulations and their use, said pesticidal formulations consisting essentially of at least one pesticidal active pyrethroid compound and containing at least one surface active agent, water and, optionally, up to 40 parts by weight of a water-miscible solvent and up to 10 parts by weight of auxiliaries.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: March 15, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Arundev H. Naik, Hans U. Sieveking, Wilhelm Stendel, Herbert Voege
  • Stabilizing quinoxaline di-N-oxides against light degradation
    Patent number: 4628054
    Abstract: Quinoxaline di-N-oxides used in animal feeds, such as olaquindox, are stabilized against light degradation by substances which absorb light within the wavelength range from 200 to 450 nm, such as quinolines, isoxanthenones, azo dyestuffs, polyenes and/or flavones.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: December 9, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Voege, Hans U. Sieveking
  • Animal collars having ectoparasiticidal activity
    Patent number: 4225578
    Abstract: The instant invention relates to new ectoparasiticidally (especially insecticidally and acaricidally) active animal collars, which are prepared by impregnating suitable carriers with certain ectoparasiticides, and to a process for their preparation.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: September 30, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Miklos von Bittera, Hans U. Sieveking, Wilhelm Stendel, Herbert Voege
  • Polyurethanes having ectoparasiticidal activity
    Patent number: 4189467
    Abstract: The instant invention relates to plastic compositions having ectoparasiticidal activity, and, in particular, insecticidal and acaricidal, which contain particular ectoparasiticides and polyurethanes, and to animal collars comprising such plastics compositions.
    Type: Grant
    Filed: March 28, 1978
    Date of Patent: February 19, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Miklos von Bittera, Hans U. Sieveking, Wilhelm Stendel, Herbert Voege