Patents by Inventor Wolf D. Bechtel

Wolf D. Bechtel 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: 4666910
    Abstract: Compounds of the formula ##STR1## wherein one of R.sub.1 and R.sub.2 is hydrogen, halogen, methyl, methoxy, amino or nitro and the other is hydrogen; orR.sub.1 and R.sub.2 are both halogen;R.sub.3 is hydrogen, halogen or methyl;R.sub.4 and R.sub.5 are each independently hydrogen or alkyl or 1 to 2 carbon atoms; orR.sub.4 and R.sub.5, together with each other and the nitrogen atom to which they are attached, are pyrrolidino or morpholino; andX is --O--, --NH--, or --S--;and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful anti-depressants.
    Type: Grant
    Filed: August 28, 1984
    Date of Patent: May 19, 1987
    Assignee: Boehringer Ingelheim KG
    Inventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn
  • Patent number: 4636510
    Abstract: The invention relates to 4-phenyl-tetrahydro-furano-pyridines of the formulas ##STR1## wherein R.sup.1 to R.sup.5 are variously defined. The compounds of the invention are intended to be used as anti-depressants with, in particular, thymoleptic and central-stimulant properties.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: January 13, 1987
    Assignee: Boehringer Ingelheim KG
    Inventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn
  • Patent number: 4578264
    Abstract: This invention relates to a pharmaceutical dosage unit composition consisting essentially of a gelatin capsule containing (1) a disintegrating core comprising clonidine, said disintegrating core having a readily water-soluble coating, and (2) a plurality of non-disintegrating cores comprising clonidine, said non-disintegrating cores having a coating consisting of from 20 to 90 percent by weight of a water-insoluble film former and from 10 to 80 percent by weight of a water-soluble polymer, the diameter of each of the disintegrating and non-disintegrating cores being at least about 5 mm.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: March 25, 1986
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Herbert Stricker, Bernhard Freund, Heribert Harwalik, Karl L. Rominger, Siegfried Darda, Volkmar Haselbarth, Dietrich Arndts, Wolf D. Bechtel, Gerhard Bozler, Rolf Brickl, Peter Gruber
  • Patent number: 4550106
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is amino, acetylamino, hydroxymethyl, methoxymethyl or ##STR2## R.sub.2 and R.sub.3, which may be identical to or different from each other, are each hydrogen, fluorine, chlorine, bromine, trifluoromethyl, hydroxyl, methoxy, methyl or ethyl;R.sub.4 is straight or branched alkyl of 1 to 3 carbon atoms; andR.sub.5 and R.sub.6, which may be identical to or different from each other, are each hydrogen or alkyl of 1 to 4 carbon atoms or, together with each other and the nitrogen atom to which they are attached, form a 5-, 6- or 7-membered heterocyclic ring where, in the case of a 6-membered ring, a --CH.sub.2 -group in the ring may be replaced by an oxygen atom,and non-toxic, pharmacologically acceptable salts thereof. The compounds as well as their salts are useful as antidepressants.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: October 29, 1985
    Assignee: Boehringer Ingelheim KG
    Inventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn
  • Patent number: 4482559
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is amino, acetylamino, hydroxymethyl, methoxymethyl or ##STR2## R.sub.2 and R.sub.3, which may be identical to or different from each other, are each hydrogen, fluorine, chlorine, bromine, trifluoromethyl, hydroxyl, methoxy, methyl or ethyl;R.sub.4 is straight or branched alkyl of 1 to 3 carbon atoms; andR.sub.5 and R.sub.6, which may be identical to or different from each other, are each hydrogen or alkyl of 1 to 4 carbon atoms or, together with each other and the nitrogen atom to which they are attached, form a 5-, 6- or 7-membered heterocyclic ring where, in the case of a 6-membered ring, a --CH.sub.2 -group in the ring may be replaced by an oxygen atom, and non-toxic, pharmacologically acceptable salts thereof. The compounds as well as their salts are useful as antidepressants.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: November 13, 1984
    Assignee: Boehringer Ingelheim KG
    Inventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn
  • Patent number: 4459279
    Abstract: A pharmaceutical dosage unit retard form having a constant, pH-independent release rate of active ingredient, consisting of a core comprising an active ingredient, and a semi-permeable diffusion coating over the core, where the coating consists of a water-insoluble film-former, a water-soluble polymer and eventually an acid-insoluble polymer incorporated therein.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: July 10, 1984
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Herbert Stricker, Bernhard Freund, Heribert Harwalik, Karl L. Rominger, Siegfried Darda, Volkmar Haselbarth, Dietrich Arndts, Wolf D. Bechtel, Gerhard Bozler, Rolf Brickl, Peter Gruber
  • Patent number: 4361546
    Abstract: A pharmaceutical dosage unit retard form having a constant, pH-independent release rate of active ingredient, consisting of a core comprising an active ingredient, and a semi-permeable diffusion coating over the core, were the coating consists of a water-insoluble film-former, a water-soluble polymer and eventually an acid-insoluble polymer incorporated therein.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: November 30, 1982
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Herbert Stricker, Bernhard Freund, Heribert Harwalik, Karl L. Rominger, Siegfried Darda, Volkmar Haselbarth, Dietrich Arndts, Wolf D. Bechtel, Gerhard Bozler, Rolf Brickl, Peter Gruber
  • Patent number: 4322423
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is chlorine, bromine or alkyl of 1 to 3 carbon atoms;R.sub.2 is hydrogen or, when R.sub.1 is alkyl, chlorine or bromine;R.sub.1 and R.sub.2, together with each other, are straight alkylene of 3 to 4 carbon atoms;R.sub.3 is hydrogen, fluorine, chlorine, bromine, alkyl of 1 to 2 carbon atoms; hydroxyl or trifluoromethyl; andR.sub.4 is hydrogen, straight or branched alkyl of 1 to 4 carbon atoms or phenyl lower alkyl;and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as antidepressants.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: March 30, 1982
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Claus Schneider, Karl-Heinz Weber, Adolf Langbein, Wolf D. Bechtel, Karin Boke
  • Patent number: 4315938
    Abstract: Compounds of the formula ##STR1## wherein R.sub.2 is hydrogen, chlorine, bromine, formyl, acetyl, alkyl of 1 to 4 carbon atoms, nitro, cyano or --CH.sub.2 --A;whereA is (alkyl of 1 to 2 carbon atoms)-amino; di(alkyl of 1 to 2 carbon atoms)-amino, where one of the alkyl moieties may have a terminal hydroxyl substituent attached thereto; or a 5-, 6- or 7-membered saturated, nitrogen-containing heterocycle which is attached to the methylene group through the nitrogen atom and may have a hydroxyl or hydroxymethyl substituent attached to a ring carbon atom, and the 6-membered heterocycle may contain oxygen as an additional ring heteroatom in the p-position;R.sub.3 is hydrogen, fluorine, chlorine, bromine, methyl or methoxy; andR.sub.4 is hydrogen or alkyl of 1 to 3 carbon atoms;and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as antidepressants.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: February 16, 1982
    Assignee: Boehringer Ingelheim Gmbh
    Inventors: Claus Schneider, Karl-Heinz Weber, Gerhard Walther, Karin Boke, Wolf D. Bechtel
  • Patent number: 4297354
    Abstract: Compounds of the steroisomeric formulas ##STR1## wherein R.sub.1 and R.sub.2, which may be identical to or different from each other, are each phenyl, substituted phenyl, thienyl or furyl;R.sub.3 is hydrogen or straight or branched alkyl of 1 to 3 carbon atoms; andR.sub.4 is straight or branched alkyl of 1 to 3 carbon atoms; orR.sub.3 and R.sub.4, together with each other and the nitrogen atom to which they are attached, form a piperidino, 4-amino-piperidino, 4-(lower alkylamino)-piperidino, piperazino, 4-(alkyl of 1 to 2 carbon atoms)-piperazino or morpholino radical; and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as antidepressants.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: October 27, 1981
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Karl-Heinz Weber, Claus Schneider, Gerhard Walther, Karl-Heinz Pook, Karin Boke, Wolf D. Bechtel