Patents by Inventor Peter Sutter

Peter Sutter 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).

  • Patent number: 4897484
    Abstract: A process is described for the preparation of compounds of the formula ##STR1## in which R and X are as defined in claim 1. The compounds of the formula (1) are valuable intermediates in the synthesis of triarylmethane dyes and triarylmethanelactones.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: January 30, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Claus D. Weis, Peter Sutter
  • Patent number: 4740604
    Abstract: There are disclosed benzanthrone lactones of formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined in claim 1. The benzanthrone lactones of formula (1) are important intermediates for the synthesis of novel dyes which are obtained by coupling suitable diazo components to said compounds of formula (1).
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: April 26, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Claus D. Weis, Peter Sutter
  • Patent number: 4306337
    Abstract: A pneumatic cleaning apparatus arranged at the infeed table of a spinning machine, especially a drafting arrangement, wherein the infeed table possesses a number of sliver infeed locations. Each infeed location has operatively associated therewith a pair of rolls, forming a nip, for conveying in each case a sliver from a sliver supply, for instance a can. Each infeed location further has operatively associated therewith sliver guide elements arranged neighboring the related pair of rolls. At least the sliver guide elements are operatively associated with an air conducting means operatively connected with a negative pressure source.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: December 22, 1981
    Assignee: Luwa AG
    Inventor: Hans-peter Sutter
  • Patent number: 4258194
    Abstract: A novel process for producing 2,3,5-trichloropyridine is described. In this process, 2,3,4,5-tetrachloropyridine is reacted, in an alkanephosphonic acid dialkyl ester (dialkyl alkane phosphonate) having 1 to 4 carbon atoms in each of the alkyl groups or in a phosphoric acid trialkyl ester (trialkyl phosphate) having 1 to 4 carbon atoms in each of the alkyl groups as the solvent, at 60.degree. to 120.degree. C., in the presence of 1.4 to 2.8 mols, per mol of 2,3,4,5-tetrachloropyridine, of an ammonium salt of an inorganic or organic acid, with 1.2 to 1.6 gram atoms of zinc per mol of 2,3,4,5-tetrachloropyridine, the 2,3,4,5-tetrachloropyridine being selectively dechlorinated in the 4-position.2,3,5-Trichloropyridine is a valuable intermediate for producing herbicidally effective .alpha.-[4-(3',5'-dichloropyrid-2-yloxy)-phenoxy-]-alkanecarboxylic acids and derivatives thereof.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: March 24, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Claus D. Weis, Peter Sutter