The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2026
Filed:
Aug. 21, 2023
National Technology & Engineering Solutions of Sandia, Llc, Albuquerque, NM (US);
Lauren E. S. Rohwer, Albuquerque, NM (US);
James E. Martin, Tijeras, NM (US);
National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US);
Abstract
A method and corresponding system for employing fluid vorticity to drive an underfilling process with a magnetic particle-loaded curing resin is disclosed. An applied multiaxial magnetic field drives the magnetic particles, and thus the curing resin, throughout the gap between a die and corresponding carrier chip. A magnetic field generator, for example, a set of triaxial Helmholtz coils, may be driven with different frequencies and phases along each axis, and may further include a DC component along one or more axes. To further minimize voids, the die and carrier chip may be placed in a vacuum oven to assist in removing any air pockets.