Patents by Inventor Steven D. Buchi

Steven D. Buchi 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).

  • Method of purifying nitrated aromatic compounds from a nitration process
    Patent number: 10155719
    Abstract: A process for removing impurities from crude nitrated aromatic products obtained during the nitration of aromatic compounds. The nitrated aromatic products are purified by treatment with ammonia washing followed by caustic washing. The nitrophenolic-containing wash waters are treated to recover dissolved organics and ammonia, and the stripped ammonia-wash effluent is incinerated. Carbon dioxide, which can accumulate in the process, is purged to the caustic washer.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: December 18, 2018
    Assignee: NORAM INTERNATIONAL LIMITED
    Inventors: Steven D. Buchi, Alfred A. Guenkel
  • METHOD OF PURIFYING NITRATED AROMATIC COMPOUNDS FROM A NITRATION PROCESS
    Publication number: 20180155269
    Abstract: A process for removing impurities from crude nitrated aromatic products obtained during the nitration of aromatic compounds. The nitrated aromatic products are purified by treatment with ammonia washing followed by caustic washing. The nitrophenolic-containing wash waters are treated to recover dissolved organics and ammonia, and the stripped ammonia-wash effluent is incinerated. Carbon dioxide, which can accumulate in the process, is purged to the caustic washer.
    Type: Application
    Filed: June 12, 2015
    Publication date: June 7, 2018
    Inventors: Steven D. Buchi, Alfred A. Guenkel