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. 15, 2025
Filed:
Apr. 05, 2019
3m Innovative Properties Company, St. Paul, MN (US);
Ronald D. Jesme, Plymouth, MN (US);
Jaewon Kim, Woodbury, MN (US);
Stephen J. Etzkorn, Woodbury, MN (US);
Dipankar Ghosh, Oakdale, MN (US);
Mohsen Salehi, Woodbury, MN (US);
Guanglei Du, Horseheads, NY (US);
John A. Wheatley, Stillwater, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
Gradient permittivity films are described. In particular, gradient permittivity films that include a first continuous matrix of a first component having a first relative permittivity and a second component disposed within the continuous matrix having a second relative permittivity. The first permittivity is greater than the second permittivity for at least one wavelength between 20 GHz and 300 GHz. Such films may be useful in improving the signal to noise ratio for transmitting and receiving units behind a protective cover.