Company Filing History:
Years Active: 1985-1992
Title: Innovations of John D. Larnerd
Introduction
John D. Larnerd is a notable inventor based in Owego, NY (US). He has made significant contributions to the field of microelectronics, holding a total of 3 patents. His work primarily focuses on methods that enhance the fabrication and functionality of circuit boards.
Latest Patents
One of his latest patents is a method of additive circuitization of circuit boards with high adhesion. This invention discloses a method for fabricating a microelectronic package, particularly one that features copper circuitization on a dielectric substrate. The process involves depositing, imaging, and developing photoresist for additive circuitization, while also forming a pattern of copper circuitization on the exposed portions of the package. To prevent the formation of harmful air bubbles on the exposed walls of the imaged and developed resist, the panel is treated with a liquid mist.
Another significant patent by Larnerd is related to a solder leveling technique. This method is applicable to printed circuit boards or other circuitized substrates. The process begins with the application of flux to the surface of the substrate. Following this, molten solder is applied to the fluxed surface, and the soldered substrate is cooled to a temperature below 300°F. A second application of molten solder is then made to the previously soldered surface, which levels the solder and removes any solder balls formed over recessed pins. This method is versatile and can be performed regardless of the substrate's surface condition or the soldering techniques used.
Career Highlights
John D. Larnerd is associated with International Business Machines Corporation (IBM), where he has contributed to various innovative projects. His expertise in microelectronics has positioned him as a valuable asset within the company.
Collaborations
Throughout his career, Larnerd has collaborated with notable colleagues such as Russell E. Darrow and Glenn J. Ingraham. These collaborations have further enriched his work and contributed to advancements in the field.
Conclusion
John D. Larnerd's innovative patents and contributions to microelectronics demonstrate his significant impact on the industry. His work continues to influence the development of advanced circuitization methods and soldering techniques.