(19)

(11)

EP 4 335 117 A1

(12)

(43) Date of publication: 13.03.2024 Bulletin 2024/11 (21) Application number: 21939968.0 (22) Date of filing: 09.12.2021

(51) International Patent Classification (IPC):  H04R 25/00(2006.01) (52) Cooperative Patent Classification (CPC): H04R 25/353; H04R 25/407; H04R 25/405; H04R 25/75; H04R 25/558; H04R 2430/20; H04R 2430/25; H04R 25/603; H04R 1/1083; H04R 3/04; H04R 2225/61 (86) International application number: PCT/US2021/062582 (87) International publication number: WO 2022/235298 (10.11.2022 Gazette 2022/45)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 04.05.2021 US 202163184064 P (71) Applicant: Texas Institute of Science, Inc. Richardson, TX 75082 (US)	(72) Inventor: OLAH, Laslo Richardson, Texas 75082 (US) (74) Representative: Lecomte & Partners  76-78, rue de Merl 2146 Luxembourg 2146 Luxembourg (LU)