Patents by Inventor David Michael Hobbs

David Michael Hobbs 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).

  • Process for 3-(2-(7-chloro-2-quinolinyl)ethenyl) - benzaldehyde
    Patent number: 5869673
    Abstract: The yield of monoaldehyde ##STR1## from 7-chloroquinaldine and isophthalaldehyde is increased to about 82% by using a 2 molar excess of isophthalaldehyde, conditions favoring precipitation of product during the reaction and recycling unreacted isophthalaldehyde. The recycling leads to a reduced net consumption of about 1.2 molar equivalents of isophthalaldehyde.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: February 9, 1999
    Assignee: Merck & Co., Inc.
    Inventors: Hsien Hsin Tung, David Michael Hobbs