(19)
(11) EP 4 816 327 A1

(12)

(43) Date of publication:
07.10.2026 Bulletin 2026/41

(21) Application number: 24827980.4

(22) Date of filing: 15.11.2024
(51) International Patent Classification (IPC): 
C03B 37/027(2006.01)
(52) Cooperative Patent Classification (CPC):
C03B 37/02727; C03B 2201/50
(86) International application number:
PCT/US2024/056032
(87) International publication number:
WO 2025/117203 (05.06.2025 Gazette 2025/23)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 28.11.2023 US 202363603235 P

(71) Applicant: Corning Incorporated
Corning, New York 14831 (US)

(72) Inventors:
  • GOYAL, Sushmit Sunil Kumar
    Painted Post, New York 14870 (US)
  • LOGUNOV, Stephan Lvovich
    Corning, New York 14830 (US)
  • MATTHEWS, III, Hazel Benton
    Wilmington, North Carolina 28403 (US)
  • MCKENZIE, Matthew Edward
    New York 14810 (US)
  • NIE, Craig Daniel
    Ithaca, New York 14850 (US)
  • TANDON, Pushkar
    Painted Post, New York 14870 (US)
  • ZHOU, Chunfeng
    Painted Post, New York 14870 (US)

(74) Representative: Elkington and Fife LLP 
Prospect House 8 Pembroke Road
Sevenoaks, Kent TN13 1XR
Sevenoaks, Kent TN13 1XR (GB)

   


(54) METHOD FOR REDUCING ATTENUATION IN OPTICAL FIBER