Karl F Ketelhohn

Title: Innovations by Karl F. Ketelhohn

Introduction

Karl F. Ketelhohn is a notable inventor based in State College, PA (US). He has made significant contributions to the field of controlled spray etching, particularly in the manufacturing of printed circuit boards. With a total of 5 patents to his name, Ketelhohn's work has advanced the efficiency and precision of etching processes.

Latest Patents

Among his latest patents is the "Apparatus for Controlled Spray Etching." This invention provides a method for delivering panels, such as printed circuit boards, through an etching chamber. The apparatus allows for a controlled spray of etchant on both the upper and lower surfaces of the panel. The innovative design ensures that a reduced amount of etchant is applied to the perimeter surface portions compared to the central areas. This is achieved by varying the pressure at different locations within the chamber. Additionally, the spray can be adjusted to apply less etchant to the leading and trailing edges of the panels. Sensors may also be utilized to control the intermittent discharge of spray etchant near the chamber's inlet.

Another significant patent is the "Method and Apparatus for Controlled Spray Etching," which shares similar principles and applications as the first. This method further enhances the control over the etching process, ensuring that the quality and precision of the panels are maintained throughout production.

Career Highlights

Karl F. Ketelhohn has been instrumental in the development of innovative etching technologies during his career. His work at Chemcut Corporation has positioned him as a leader in the field. His inventions have not only improved manufacturing processes but have also contributed to the advancement of technology in printed circuit board production.

Collaborations

Throughout his career, Ketelhohn has collaborated with notable colleagues, including Donald F. Ball and Randall E. Markle. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the etching industry.

Conclusion

Karl F. Ketelhohn's contributions to controlled spray etching have significantly impacted the manufacturing of printed circuit boards. His innovative patents and collaborative efforts continue to influence the industry, showcasing the importance of creativity and precision in technological advancements.