This inventor holds 7 USPTO granted patents and 11 published patent applications. Top assignee: International Business Machines Corporation. Active years: 1995-2001.
Location History:
- Renfrewshire, GB (1998 - 2000)
- Inverclyde, GB (2000)
- Gourock, GB (1995 - 2001)
Company Filing History:
Years Active: 1995-2001
Title: The Innovations of Stuart P. Lees
Introduction
Stuart P. Lees is a notable inventor based in Gourock, GB. He has made significant contributions to the field of electrical engineering, particularly in the area of soldering technology and printed circuit board assembly. With a total of 7 patents to his name, Lees has demonstrated a commitment to innovation and excellence in his work.
Latest Patents
One of his latest patents focuses on solder particle deposition. In this invention, solder particles are deposited onto metallized contacts of a direct chip attach (DCA) site located on a substrate. The contacts are coated with a layer of flux, and a pick-up head is positioned in a reservoir of solder particles. The particles are attracted to the apertures in the end of the head, which correspond to the footprint of the metallized contacts on the substrate. The head is then positioned adjacent to the substrate, and the particles are released, sticking to the flux-coated contacts. The particles are subsequently reflowed, leveled, and again coated with flux before an integrated circuit chip is placed on the leveled reliefs and reflowed to attach the chip onto the contacts.
Another significant patent by Lees involves the assembly of electrical components on printed circuit boards. This invention discloses an inspection apparatus that provides a visual indication of the proper merger of the conductive pins of an electrical component with the corresponding openings in a printed circuit board. The apparatus includes an inspection plate with a plurality of channels defined between first and second opposite faces. Mounted within these channels are inspection pins that move between a rest position and an extended position. When the component is merged with the printed circuit board, each connector pin pushes against the corresponding inspection pin, providing a visual indication of any conductive pins that have not merged correctly.
Career Highlights
Stuart P. Lees has had a distinguished career, working at International Business Machines Corporation (IBM). His work has significantly impacted the efficiency and reliability of electronic component assembly processes.
Collaborations
Throughout his career, Lees has collaborated with notable colleagues, including Kenneth Skene Murray and William French. These collaborations have further enhanced his innovative contributions to the field.
Conclusion
Stuart P. Lees is a prominent inventor whose work in soldering technology and printed circuit board assembly has led to significant advancements in the industry. His patents reflect a deep