Patents by Inventor Ottavio Torrini

Ottavio Torrini 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 tanning skins or hides
    Patent number: 4312632
    Abstract: The tanning of hides or skins using chromium salts is carried out in a tanning drum by using a total liquid phase less than or substantially equal to the amount of liquid imbibed in the hides or skins in the pelt state. Lubricants can be added to reduce friction between the skins and hide, and between the skins and hides and the drum. An absorbent such as wood flour can be added to absorb residual bath solution.
    Type: Grant
    Filed: July 23, 1980
    Date of Patent: January 26, 1982
    Inventor: Ottavio Torrini