Company Filing History:
Years Active: 1996-2000
Title: The Innovations of James Joseph Krajewski
Introduction
James Joseph Krajewski is a notable inventor based in Raritan, NJ (US). He holds a total of 6 patents that showcase his contributions to the field of superconductors and dielectric materials. His work has significant implications for various technological applications.
Latest Patents
Krajewski's latest patents include a groundbreaking article on an intermetallic superconductor material. This novel superconductor exhibits a surprisingly high transition temperature and comprises elements B and C, forming a bulk superconductor. An exemplary composition is YPd.sub.5 B.sub.3 C.sub.x, where the C:B ratio is maintained between 0.05 and 2. A bulk sample of this composition has demonstrated an onset temperature of 22.5 K, with over 15 volume % of the sample being superconducting. Additionally, he has developed low temperature coefficient dielectric materials and devices. These materials, comprising Ca.sub.5 R.sub.2 XO.sub.12 with R as either Nb or Ta and X selected from Ti and Ti.sub.1-x Zr.sub.x, exhibit high dielectric constants, low dielectric losses, and low TCKs. The dielectric properties are influenced by processing conditions, particularly involving sintering and re-firing at temperatures of 1400°C and above. These dielectric materials are particularly beneficial for microwave communications applications.
Career Highlights
Throughout his career, Krajewski has worked with prominent companies such as Lucent Technologies Inc. and AT&T Corp. His experience in these organizations has contributed to his expertise in the field of superconductors and dielectric materials.
Collaborations
Krajewski has collaborated with notable individuals in his field, including Robert J. Cava and William Frederick Peck. These collaborations have likely enriched his research and development efforts.
Conclusion
James Joseph Krajewski's innovative work in superconductors and dielectric materials has made a significant impact in the field of technology. His patents reflect his dedication to advancing scientific knowledge and practical applications.
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