Patents by Inventor Lech Andrzej Ciszewski

Lech Andrzej Ciszewski 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).

  • Organic compounds and their uses
    Patent number: 8222425
    Abstract: The present application describes organic compounds that are useful for the treatment, prevention and/or amelioration of human diseases.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: July 17, 2012
    Assignee: Novartis AG
    Inventors: Shawn D. Britt, Lech Andrzej Ciszewski, Jiping Fu, Subramanian Karur, Yugang Liu, Peichao Lu, David Thomas Parker, Mahavir Prashad, Prakash Raman, Pascal Rigollier, Mohindra Seepersaud, Aregahegn Yifru, Rui Zheng
  • ORGANIC COMPOUNDS AND THEIR USES
    Publication number: 20110275819
    Abstract: The present application describes organic compounds that are useful for the treatment, prevention and/or amelioration of human diseases.
    Type: Application
    Filed: July 19, 2011
    Publication date: November 10, 2011
    Applicant: NOVARTIS AG
    Inventors: Shawn D. BRITT, Lech Andrzej CISZEWSKI, Jiping FU, Subramanian KARUR, Yugang LIU, Peichao LU, David Thomas PARKER, Mahavir PRASHAD, Prakash RAMAN, Pascal RIGOLLIER, Mohindra SEEPERSAUD, Aregahegn YIFRU, Rui ZHENG
  • Organic compounds and their uses
    Patent number: 8008263
    Abstract: The present application describes organic compounds that are useful for the treatment, prevention and/or amelioration of human diseases.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: August 30, 2011
    Assignee: Novartis AG
    Inventors: Shawn D. Britt, Lech Andrzej Ciszewski, Jiping Fu, Subramanian Karur, Yugang Liu, Peichao Lu, David Thomas Parker, Mahavir Prashad, Prakash Raman, Pascal Rigollier, Mohindra Seepersaud, Aregahegn Yifru, Rui Zheng
  • Organic Compounds and Their Uses
    Publication number: 20090137495
    Abstract: The present application describes organic compounds that are useful for the treatment, prevention and/or amelioration of human diseases.
    Type: Application
    Filed: October 10, 2008
    Publication date: May 28, 2009
    Inventors: Shawn D. Britt, Lech Andrzej Ciszewski, Jiping Fu, Subramanian Karur, Yugang Liu, Peichao Lu, David Thomas Parker, Mahavir Prashad, Prakash Raman, Pascal Rigollier, Mohindra Seepersaud, Aregahegn Yifru, Rui Zheng
  • Process for preparing 2,6-diaminopurine derivatives
    Patent number: 6897307
    Abstract: A one-pot process for preparing 2,6-diaminopurine derivatives or an acid addition salt thereof comprising: (i) reacting a purine compound with an amine compound in the presence of a tertiary amine at a pH of 7 to 14 to form a 6-substituted aminopurine derivative, and (ii) reacting the 6-substituted aminopurine with an aromatic amine in the presence of an acid catalyst at a pH of 0.1 to less than 7.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: May 24, 2005
    Assignee: Novartis AG
    Inventors: Lech Andrzej Ciszewski, Liladhar M. Waykole
  • Process for preparing 2, 6-diaminopurine derivatives
    Publication number: 20030225278
    Abstract: A one-pot process for preparing 2,6-diaminopurine derivatives or an acid addition salt thereof comprising: (i) reacting a purine compound with an amine compound in the presence of a tertiary amine at a pH of 7 to 14 to form a 6-substituted aminopurine derivative, and (ii) reacting the 6-substituted aminopurine with an aromatic amine in the presence of an acid catalyst at a pH of 0.1 to less than 7.
    Type: Application
    Filed: March 28, 2003
    Publication date: December 4, 2003
    Inventors: Lech Andrzej Ciszewski, Liladhar M. Waykole