Patents by Inventor Uldis Krolls

Uldis Krolls 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).

  • Crystalline quinapril and a process for producing the same
    Patent number: 4761479
    Abstract: A novel crystalline form of quinapril and a novel process for the large scale preparation of the ACE inhibitor, quinapril, in a highly pure state. The substance is of high bulk density suitable for formulation in capsules and tablets. This inexpensive process uses HCl gas in glacial acetic acid for rapid and clean de-t-butylation at room temperature.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: August 2, 1988
    Assignee: Warner-Lambert Company
    Inventors: Om P. Goel, Uldis Krolls