In 1884, Edson invented a process to make peanut paste from milling roasted peanuts between two heated plates.
In 1985, the famous breakfast cereal maker, Kellogg, patented a process using raw peanuts.
In 1903, Dr. Straub patented a peanut butter making.
In 1922, Joseph Rosefield invented a process to keep peanut oil from separating from the peanut solids. (Side note: the separation is now considered a sign of healthy nut butter with natural oils and not over processed). He later sold the patent to a company started to make Peter Pan peanut butter. Later, Rosefield went into business selling Skippy peanut butter.