This inventor holds 9 USPTO granted patents. Top assignees: Eastman-Kodak Company, Nexpress Solutions, Inc.. Active years: 1990-2003.
Company Filing History:
Years Active: 1990-2003
Title: Innovations of Donna A DiPrima
Introduction
Donna A DiPrima is a notable inventor based in Rochester, NY (US). She has made significant contributions to the field of electrostatographic developers and polymeric powders. With a total of 9 patents to her name, her work has had a considerable impact on the industry.
Latest Patents
One of her latest patents is titled "Hard carrier particles coated with a polymer resin and a conductive material." This invention provides a carrier for an electrostatographic developer, comprising particles of a hard magnetic ferrite material as the core. The core is coated with a polymer resin, which in turn has a coating of an organic conductive material. This organic conductive material can serve as a charge control agent and can be present in very small amounts. The developer compositions created from this invention do not require preconditioning, as they exhibit stable charging characteristics and low levels of "dusting." Another significant patent is "Polymeric powders and method of preparation." This patent describes the preparation of polymeric powders with small particle size and narrow size distribution through a limited coalescence procedure. In this method, a polymer in an organic solvent is dispersed by high shear agitation in an aqueous phase containing colloidal stabilizer particles with opposite electrostatic charges. The organic solvent is then evaporated, allowing for the recovery of polymer particles from the aqueous medium. These particles possess irregular shapes and narrow particle size distribution, providing superior electrostatic transfer properties when used as electrostatographic dry toners.
Career Highlights
Throughout her career, Donna has worked with prominent companies such as Eastman Kodak Company and Nexpress Solutions, Inc. Her experience in these organizations has allowed her to develop and refine her innovative ideas.
Collaborations
Donna has collaborated with talented individuals in her field, including Dinesh Tyagi and Mridula Nair. These collaborations have contributed to her success and the advancement of her inventions.
Conclusion
Donna A DiPrima is a remarkable inventor whose work in electrostatographic developers and polymeric powders has led to significant advancements in the industry. Her innovative patents and collaborations highlight her dedication to her field and her impact on technology.