Patents by Inventor Mikhail Leyderman

Mikhail Leyderman 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 making a rigid tubular article
    Patent number: 5433902
    Abstract: A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has been formed about the mandrel, the shape-providing elements can be slid off the straight and arcuate rods so that the mandrel can be removed from the rigid tubular article's interior. This provides for easy separation of the mandrel from the tubular article.
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: July 18, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mikhail Leyderman
  • Mandrel for making a rigid tubular article
    Patent number: 5350139
    Abstract: A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has been formed about the mandrel, the shape-providing elements can be slid off the straight and arcuate rods so that the mandrel can be removed from the rigid tubular article's interior. This provides for easy separation of the mandrel from the tubular article.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: September 27, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mikhail Leyderman