(19)
(11) EP 4 426 867 A1

(12)

(43) Date of publication:
11.09.2024 Bulletin 2024/37

(21) Application number: 23728450.0

(22) Date of filing: 13.04.2023
(51) International Patent Classification (IPC): 
C21D 1/18(2006.01)
C22C 38/02(2006.01)
C21D 1/20(2006.01)
C21D 1/30(2006.01)
 C21D 6/00(2006.01)
C22C 38/04(2006.01)
C21D 1/22(2006.01)
(52) Cooperative Patent Classification (CPC):
C21D 1/18; C21D 6/00; C22C 38/02; C22C 38/04; C21D 1/20; C21D 1/22; C21D 1/30; C21D 2211/002; C21D 2211/008
(86) International application number:
PCT/PL2023/050025
(87) International publication number:
WO 2023/200347 (19.10.2023 Gazette 2023/42)
(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:
KH MA MD TN

(30) Priority: 14.04.2022 PL 44095322

(71) Applicant: POLITECHNIKA WARSZAWSKA
00-661 Warszawa (PL)

(72) Inventors:
  • WASIAK, Krzysztof
    08-110 Siedlce (PL)
  • W SIERSKA-HINCA, Monika
    02-495 Warszawa (PL)
  • CHMIELARZ, Krzysztof
    03-984 Warszawa (PL)
  • WI TNICKI, Wies aw
    01-248 Warszawa (PL)

(74) Representative: JWP Patent & Trademark Attorneys 
ul. Minska 75
03-828 Warszawa
03-828 Warszawa (PL)

   


(54) METHOD OF HEAT TREATMENT OF MEDIUM- AND HIGH-CARBON ALLOY STEEL AND USE THEREOF