Company Filing History:
Years Active: 1999
Title: The Innovations of Daniel Joseph Hart
Introduction
Daniel Joseph Hart is an accomplished inventor based in Finksburg, MD (US). He has made significant contributions to the field of photoresist compositions, particularly in the development of stable, ionomeric photoresist emulsions. His work has implications for the production of electronic circuit boards, showcasing his expertise in materials science and engineering.
Latest Patents
Hart holds a patent for a "Stable, ionomeric photoresist emulsion and process of preparation." This patent discloses waterborne, stable photoresist compositions characterized by increased shear and storage stability. The photoresist composition comprises an aqueous emulsion of a 22% or less neutralized carboxylated resin and a non-ionic surfactant containing poly(ethylene-oxide) segments, along with a photopolymerizable monomer and photoinitiator. Neutralization is accomplished using either an organic or an inorganic base or mixtures thereof. These compositions are particularly useful for selectively coating and protecting surfaces subjected to corrosive environments, such as etchant processes in the production of circuit traces for electronic circuit boards.
Career Highlights
Daniel Joseph Hart is associated with Macdermid, Incorporated, where he has been able to apply his innovative ideas in practical settings. His work has not only advanced the field of photoresist technology but has also contributed to the efficiency and effectiveness of electronic manufacturing processes.
Collaborations
Throughout his career, Hart has collaborated with notable colleagues, including John Scott Hallock and Alan Frederick Becknell. These collaborations have likely enriched his work and expanded the impact of his inventions.
Conclusion
Daniel Joseph Hart's contributions to the field of photoresist technology exemplify the importance of innovation in electronic manufacturing. His patent for stable, ionomeric photoresist emulsions highlights his role as a key inventor in this specialized area.