James Ambrose Cutting took out three patents in 1854 for improvements in the collodion process used to make Ambrotypes.
In 1854, Cutting took out three patents relating to the process of creating images on glass using the wet plate collodion process. To create an ambrotype, the photographer sensitized a polished plate of glass by the wet plate collodion process and exposed the plate in a camera to produce a negative image. 
