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:
Jun. 02, 2026
Filed:
Dec. 07, 2022
Applicant:
Ngk Insulators, Ltd., Nagoya-City, JP;
Inventors:
Jungo Kondo, Miyoshi-City, JP;
Makoto Iwai, Kasugai-City, JP;
Keiichiro Asai, Nagoya-City, JP;
Tomoyoshi Tai, Inazawa-City, JP;
Kentaro Tani, Nagoya-City, JP;
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/025 (2006.01); G02B 6/122 (2006.01); G02F 1/225 (2006.01); H01P 1/20 (2006.01); H01Q 15/14 (2006.01);
U.S. Cl.
CPC ...
G02F 1/025 (2013.01); G02B 6/1225 (2013.01); G02F 1/2257 (2013.01); H01P 1/20 (2013.01); H01Q 15/14 (2013.01); G02F 2202/32 (2013.01);
Abstract
Provided is a photonic crystal element, which shows small delay of an electric signal, shows a small propagation loss, and has uniform characteristics over its entirety. The photonic crystal element includes a two-dimensional photonic crystal slab having holes periodically formed in a substrate made of a ceramics material, the photonic crystal element being configured to guide an electromagnetic wave having a frequency of 30 GHz or more and 20 THz or less.