Patents by Inventor Mark J. Lossett

Mark J. Lossett 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).

  • Co-production of an aromatic monoamine and an aromatic diamine directly from benzene or a benzene derivative through controlled nitration
    Patent number: 4740621
    Abstract: A two-stage process for the co-production of aniline and m-phenylenediamine where, in the first stage, benzene, nitric acid, and sulfuric acid are reacted in a liquid phase to produce in greater amounts nitrobenzene (approximately 70%) and m-dinitrobenzene (approximately 30%), and in lesser or trace amounts o-dinitrobenzene and p-dinitrobenzene, and water; and in the second stage the products of the first stage are reacted with hydrogen in the gas phase to produce aniline (approximately 70%) and m-phenylenediamine (approximately 30%) in greater amounts, and o-phenylenediamine and p-phenylenediamine in lesser amounts, and water. The reaction products are separated by distillation.
    Type: Grant
    Filed: November 1, 1985
    Date of Patent: April 26, 1988
    Assignee: First Chemical Corporation
    Inventors: Earl G. Adams, Robert B. Barker, Mark J. Lossett, Larry I. Flowers