David W Hume, Jr

Title: Innovations of David W Hume, Jr.

Introduction

David W Hume, Jr. is a notable inventor based in Endicott, NY (US). He has made significant contributions to the field of printed circuit board technology. His innovative approach has led to the development of a unique process for neutralizing chloride ions in multilayer printed circuit boards.

Latest Patents

David W Hume, Jr. holds 1 patent for his invention titled "Neutralizing chloride ions in via holes in multilayer printed circuit." This patent describes a neutralization process that effectively removes chloride ions from etched via holes in printed circuit boards. The process involves two dip operations in a Neutra-Clean and water solution, which is continuously re-circulated. Following this, the board is subjected to a heated de-ionized water feed, an ambient overflow de-ionized water rinse, and conveyorized air drying. The Neutra-Clean solution is designed to penetrate deep into the via holes, attracting free chloride ions from the etchant residue. The subsequent rinsing steps ensure the removal of the Neutra-Clean solution and any residuals formed by chemical reactions.

Career Highlights

David W Hume, Jr. is associated with International Business Machines Corporation (IBM), where he has contributed to various projects and innovations. His work has been instrumental in enhancing the reliability and performance of printed circuit boards.

Collaborations

One of his notable collaborators is John Rasile, with whom he has worked on various projects within IBM.

Conclusion

David W Hume, Jr. is a distinguished inventor whose work in neutralizing chloride ions in printed circuit boards has made a significant impact in the field. His innovative solutions continue to influence the technology used in electronic devices today.