Patents by Inventor Hans-Joachim Siemann

Hans-Joachim Siemann 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: 6841548
    Abstract: The invention concerns pharmaceutical preparations containing estra-1,3,5(10)-triene derivatives as active ingredients which carry a group of the general formula R—SO2—O— at their C3 position wherein R is a R1R2N group wherein R1 and R2 are independent of each other and represent a hydrogen atom, a C1-C5 alkyl radical or, together with the N atom, a polymethylene imino radical containing 4 to 6 C atoms, or a morpholino radical. The preparations according to the invention can be used for hormonal contraception and for hormon replacement therapy (HRT). They exhibit a low hepatic estrogenity.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: January 11, 2005
    Assignee: Schering AG
    Inventors: Sigfrid Schwarz, Walter Elger, Christel Siemann, Gudrun Reddersen, Birgitt Schneider, Hans-Joachim Siemann
  • Patent number: 6569844
    Abstract: The invention concerns pharmaceutical preparations containing estra-1,3,5(10)-triene derivatives as active ingredients which carry a group of the general formula R—SO2—O— at their C3 position wherein R is a R1R2N group wherein R1 and R2 are independent of each other and represent a hydrogen atom, a C1-C5 alkyl radical or, together with the N atom, a polymethylene imino radical containing 4 to 6 C atoms, or a morpholino radical. The preparations according to the invention can be used for hormonal contraception and for hormon replacement therapy (HRT). They exhibit a low hepatic estrogenity.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: May 27, 2003
    Assignee: Jenapharm GmbH & Co., KG
    Inventors: Sigfrid Schwarz, Walter Elger, Hans-Joachim Siemann, Gudrun Reddersen, Birgitt Schneider
  • Patent number: 6080735
    Abstract: This invention is relating to new estra-1,3,5(10)-trien-sulfamates carrying at the 3-position an R--SO.sub.2 --O--group, with R being an R.sup.1 R.sup.2 N--group in which R.sup.1 and R.sup.2, independently of each other, represent a hydrogen atom, an alkyl residue with 1-5 C atoms or, together with the N atom, a polymethylene-imino residue with 4-6 C atoms or a morpholino residue.The compounds, according to this invention, are suitable for hormonal contraception and climacteric hormone replacement therapy (HRT) as well as for treatment of gynecological and andrological diseases. Hence, only low hepatic estrogenicity is exhibited by the compounds according to this invention.Also described are processes for preparation of the compounds according to this invention and for preparation of pharmaceutical compositions.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: June 27, 2000
    Assignee: Jenapharm GmbH & Co. KG
    Inventors: Sigfrid Schwarz, Walter Elger, Hans-Joachim Siemann, deceased, by Margit Lucas, heir, by Frank Siemann, heir, Gudrun Reddersen, Birgitt Schneider