Patents by Inventor Raffaello Bertolini

Raffaello Bertolini 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).

Polyvinylbutyrate sheet staining process for the manufacture of laminated and bulletproof glass as well as product obtained by said process

Patent number: 4216269

Abstract: This invention provides a process for applying a stain on a sheet of polyvinylbutyrate comprising contacting specific zones of the sheet of polyvinylbutyrate with a bath comprising water and a synthetic, organic stain; removing the sheet from the bath after a suitable time of contact; and washing the sheet thoroughly.

Type: Grant

Filed: August 2, 1978

Date of Patent: August 5, 1980

Assignee: Raffaello Bertolini

Inventors: Roberto Tonali, Raffaello Bertolini

Polyvinylbutyrate sheet staining process for the manufacture of laminated and bulletproof glass as well as product obtained by said process