Location History:
- Blacksburg, VA (US) (1977)
- Idaho Falls, ID (US) (1983)
Company Filing History:
2 out of 605 
1 out of 832,880 Years Active: 1977-1983
Title: Paul V Kelsey, Jr: Innovator in Ceramic and Alloy Technologies
Introduction
Paul V Kelsey, Jr. is a notable inventor based in Blacksburg, VA (US). He has made significant contributions to the fields of materials science and engineering, particularly in the development of methods for fabricating seals between ceramics and metal alloys. With a total of 3 patents to his name, Kelsey has demonstrated a commitment to innovation and technological advancement.
Latest Patents
One of Kelsey’s latest patents is a method for fabricating a seal between a ceramic and a metal alloy. This method involves prefiring the alloy in an atmosphere with a very low partial pressure of oxygen, firing the assembled alloy and ceramic in air, and gradually cooling the fired assembly to avoid the formation of thermal stress in the ceramic. This innovative approach forms a bond between the alloy and the ceramic that can withstand the environment of a pressurized water reactor, making it suitable for use in electrical conductivity sensitive liquid level transducers. Another significant patent is for preparing rare earth pyrohafnate phosphors. These phosphors have the general formula (A.sub.1.sub.-x RE.sub.x).sub.2 Hf.sub.2 O.sub.7, where A is selected from a group of elements including yttrium and gadolinium, and RE includes elements such as praseodymium and europium. The preparation involves dissolving oxides in mineral acid and combining them with HfOCl.sub.2, followed by the addition of a precipitating agent.
Career Highlights
Throughout his career, Kelsey has worked with various companies, including GTE Sylvania Incorporated. His work has focused on advancing technologies that enhance the performance and reliability of materials used in critical applications.
Collaborations
Kelsey has collaborated with notable individuals in his field, including James E Mathers and William T Siegel. These collaborations have contributed to the development of innovative solutions in materials science.
Conclusion
Paul V Kelsey, Jr. is a distinguished inventor whose work in ceramic and alloy technologies has led to significant advancements in the field. His patents reflect a deep understanding of materials and their applications in demanding environments.