Company Filing History:
Years Active: 1998-1999
Title: Innovations of James Patrick Finnigan
Introduction
James Patrick Finnigan is a notable inventor based in Santa Clara, CA (US). He holds a total of 3 patents that showcase his contributions to the field of nuclear magnetic resonance (NMR) technology. His work has significantly advanced the capabilities of NMR probes, making them more efficient and effective.
Latest Patents
One of Finnigan's latest patents is the NMR circuit-switch. This invention features a 1/4 wave circuit switch designed for use in an NMR probe. It includes a housing with a stepped cavity that precisely locates switch components inside. The circuit switch cooperates with a 1/4 wave tube and is adaptable for both single and double tune operations. For single tune operations, an external capacitor connects with a resiliently supported movable electrical contact, while for double tune operations, a threaded tip of the 1/4 wave center conductor contacts a pair of threaded contacts inside the housing cavity. This design allows the NMR circuit to resonate at two separate frequencies, which can be adjusted using an extension tube.
Another significant patent is the saddle-shaped multiturn RF coils for NMR probes. This invention comprises a symmetric RF coil with an odd number of turns, featuring generally straight and arc-shaped portions wound alternately on the curved surface of a cylindrical sample region. The design includes additional arc-shaped segments that connect to the outermost turn, forming continuous end rings. This configuration enhances the RF homogeneity and achieves high-resolution NMR performance, bridging the gap between even-turn coils and optimizing resonance circuits across the operating range.
Career Highlights
Finnigan has had a distinguished career, working with prominent companies such as Varian Associates, Inc. and Varian, Inc. His experience in these organizations has contributed to his expertise in NMR technology and innovation.
Collaborations
Throughout his career, Finnigan has collaborated with notable individuals, including Knut G Mehr and Andrew W Munsell. These collaborations have further enriched his work and contributed to advancements in the field.
Conclusion
James Patrick Finnigan's innovative patents and contributions to NMR technology highlight his significant role as an inventor. His work continues to influence the field, demonstrating the importance of innovation in scientific advancements.