John J Fronduto

Title: Innovations of John J Fronduto

Introduction

John J Fronduto is a notable inventor based in Waltham, MA (US). He has made significant contributions to the field of technology, holding a total of three patents. His work primarily focuses on advancements in electron beam generation and metal deposition techniques.

Latest Patents

One of Fronduto's latest patents is the "Stably emitting demountable photoelectron generator." This invention presents a new method and apparatus for providing a stable, temporally controllable high current density electron beam from a photocathode. The innovation involves supplying a low level of cesium and possibly a stabilizing gas to the photoemitting surface while the electron beam is being generated. This process replenishes cesium and other ions lost from the emitting surface on a continual basis.

Another significant patent is the "Electrolytic deposition of metals on laser-conditioned surfaces." This improved laser-based method allows for the deposition of metal on an electrically insulated metallic substrate. Selected areas of the insulated plate, such as an anodized aluminum plate, are irradiated with laser energy to fracture the anodized layer and expose the underlying aluminum. The plate is then immersed in a solution containing copper ions and negatively biased, resulting in a thin layer of copper being electrolytically deposited in the selected areas. This method is particularly suited for the rapid production of high-quality, durable photographic printing plates with a long shelf life.

Career Highlights

John J Fronduto is currently employed at Thermo Electron Corporation, where he continues to innovate and develop new technologies. His work has had a significant impact on the industry, particularly in the areas of electron beam technology and metal deposition.

Collaborations

Fronduto has collaborated with notable coworkers such as Peter E Oettinger and David H Fine. Their combined expertise has contributed to the success of various projects and innovations.

Conclusion

John J Fronduto's contributions to technology through his patents and work at Thermo Electron Corporation highlight his role as a significant inventor in the field. His innovative approaches to electron beam generation and metal deposition continue to influence advancements in technology.