Patents by Inventor Ann Eldridge

Ann Eldridge 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 preapring maytansinol
    Publication number: 20050152913
    Abstract: Processes for preparing maytansinol from disulfide-containing maytansinoid esters by reduction with LiAlH4. The maytansinol is useful for preparing cell-binding agent/maytansinoid complexes.
    Type: Application
    Filed: May 12, 2003
    Publication date: July 14, 2005
    Inventor: Ann Eldridge
  • Garden marker apparatus
    Patent number: 5333391
    Abstract: A device to permit marking of edges of a garden and the like is provided employing a flexible retractable tape mounted relative to a housing, wherein the housing is arranged to slidably receive a first flat post along a rear wall of the housing, with a round post through an opening within the tape to permit ease of length measuring relative to a garden scenario.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: August 2, 1994
    Inventors: Ann Eldridge, Henry V. Eldridge