Patents by Inventor Hans-Peter Ignatow

Hans-Peter Ignatow 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).

  • Process for preparing N-substituted 3-?-aminonortropanes
    Patent number: 7321042
    Abstract: The invention relates to a process for preparing N-substituted 3?-aminonortropanes of formula I wherein R1 has the meaning given in the claims, from the corresponding 3-oxonortropane or the corresponding 3?-aminonortropane, in which the latter is converted with an arylmethylamine or an arylaldehyde into the corresponding imines which are then tautomerised or isomerised and then hydrolysed. The invention also relates to the new compounds of formula V wherein R1 and Ar have the meanings given in the claims.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: January 22, 2008
    Assignee: Boehringer Ingelheim Pharma GmbH & Co. KG
    Inventors: Rainer Sobotta, Hans-Peter Ignatow
  • Process for isolating of ?-mangostin
    Patent number: 7285672
    Abstract: The invention relates to a process for obtaining and purifying pure ?-mangostin from the rind of the fruit (mangosteen) of Garcinia mangostana.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: October 23, 2007
    Assignee: Boehringer Ingelheim Pharma GmbH & Co. KG
    Inventors: Rainer Sobotta, Hans-Peter Ignatow
  • Process for isolating of alpha-mangostin
    Publication number: 20060014967
    Abstract: The invention relates to a process for obtaining and purifying pure ?-mangostin from the rind of the fruit (mangosteen) of Garcinia mangostana.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 19, 2006
    Applicant: Boehringer Ingelheim Pharma GmbH & Co. KG
    Inventors: Rainer Sobotta, Hans-Peter Ignatow
  • Process for preparing N-substituted 3-beta-aminonortropanes
    Publication number: 20050096346
    Abstract: The invention relates to a process for preparing N-substituted 3?-aminonortropanes of formula I wherein R1 has the meaning given in the claims, from the corresponding 3-oxonortropane or the corresponding 3 ?-aminonortropane, in which the latter is converted with an arylmethylamine or an arylaldehyde into the corresponding imines which are then tautomerised or isomerised and then hydrolysed. The invention also relates to the new compounds of formula V wherein R1 and Ar have the meanings given in the claims.
    Type: Application
    Filed: October 4, 2004
    Publication date: May 5, 2005
    Applicant: Boehringer Ingelheim Pharma GmbH & Co. KG
    Inventors: Rainer Sobotta, Hans-Peter Ignatow
  • Dipeptides with neurokinin-antagonistic activity
    Patent number: 6232468
    Abstract: Disclosed are compounds which are neurokinin (tachykinin)-antagonists, useful for the treatment or prevention of inflammatory and allergic disease.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: May 15, 2001
    Assignee: Boehringer Ingelheim KG
    Inventors: Franz Esser, Gerd Schnorrenberg, Hans-Peter Ignatow, Günther Giesler, Birgit Jung, Georg Speck