INVENTOR
William Justin Kroll
1889 - 1973

William Justin Kroll
William Justin Kroll (; born Guillaume Justin Kroll, Luxembourgish: [kʀol]; November 24, 1889 – March 30, 1973) was a Luxembourgish metallurgist, born in Esch-sur-Alzette. He is best known for inventing the Kroll process in 1940, which is used commercially to extract metallic titanium from ore. Read more on Wikipedia
His biography is available in different languages on Wikipedia. William Justin Kroll is the 327th most popular inventor (down from 300th in 2019), the 51st most popular biography from Luxembourg (down from 37th in 2019) and the most popular Luxembourger Inventor.
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Among INVENTORS
Among inventors, William Justin Kroll ranks 327 out of 426. Before him are Alexander P. de Seversky, George Devol, Ottmar Mergenthaler, Jacob Ellehammer, Jozef Murgaš, and Georges Beuchat. After him are Peter Carl Goldmark, Jack Northrop, Hannibal Goodwin, An Wang, Victor Hasselblad, and John Philip Holland.
Most Popular Inventors in Wikipedia
Go to all RankingsAlexander P. de Seversky
1894 - 1974
HPI: 56.49
Rank: 321
George Devol
1912 - 2011
HPI: 56.49
Rank: 322
Ottmar Mergenthaler
1854 - 1899
HPI: 56.45
Rank: 323
Jacob Ellehammer
1871 - 1946
HPI: 56.33
Rank: 324
Jozef Murgaš
1864 - 1929
HPI: 56.30
Rank: 325
Georges Beuchat
1910 - 1992
HPI: 56.27
Rank: 326
William Justin Kroll
1889 - 1973
HPI: 56.14
Rank: 327
Peter Carl Goldmark
1906 - 1977
HPI: 56.13
Rank: 328
Jack Northrop
1895 - 1981
HPI: 56.11
Rank: 329
Hannibal Goodwin
1822 - 1900
HPI: 56.10
Rank: 330
An Wang
1920 - 1990
HPI: 56.08
Rank: 331
Victor Hasselblad
1906 - 1978
HPI: 56.05
Rank: 332
John Philip Holland
1840 - 1914
HPI: 56.02
Rank: 333
Contemporaries
Among people born in 1889, William Justin Kroll ranks 224. Before him are Stafford Cripps, Anita Loos, Claudia Muzio, Balthasar van der Pol, Marcel Moyse, and Yakup Kadri Karaosmanoğlu. After him are Ted Wilde, Carl Folcker, Nezihe Muhiddin, Carl O. Sauer, Hugo Wieslander, and Francis Spellman. Among people deceased in 1973, William Justin Kroll ranks 206. Before him are Vladimír Syrovátka, Gram Parsons, Jascha Horenstein, Romeo Bertini, Josué de Castro, and Carlos Menditeguy. After him are Hans Haas, Jean Barraqué, Ōten Shimokawa, Rodolphe Hiden, François Bonlieu, and Washington Ortuño.
Others Born in 1889
Go to all RankingsStafford Cripps
POLITICIAN
1889 - 1952
HPI: 56.68
Rank: 218
Anita Loos
WRITER
1889 - 1981
HPI: 56.68
Rank: 219
Claudia Muzio
SINGER
1889 - 1936
HPI: 56.67
Rank: 220
Balthasar van der Pol
PHYSICIST
1889 - 1959
HPI: 56.65
Rank: 221
Marcel Moyse
MUSICIAN
1889 - 1984
HPI: 56.36
Rank: 222
Yakup Kadri Karaosmanoğlu
WRITER
1889 - 1974
HPI: 56.24
Rank: 223
William Justin Kroll
INVENTOR
1889 - 1973
HPI: 56.14
Rank: 224
Ted Wilde
FILM DIRECTOR
1889 - 1929
HPI: 56.02
Rank: 225
Carl Folcker
GYMNAST
1889 - 1911
HPI: 55.91
Rank: 226
Nezihe Muhiddin
POLITICIAN
1889 - 1958
HPI: 55.79
Rank: 227
Carl O. Sauer
GEOGRAPHER
1889 - 1975
HPI: 55.74
Rank: 228
Hugo Wieslander
ATHLETE
1889 - 1976
HPI: 55.68
Rank: 229
Francis Spellman
RELIGIOUS FIGURE
1889 - 1967
HPI: 55.67
Rank: 230
Others Deceased in 1973
Go to all RankingsVladimír Syrovátka
ATHLETE
1908 - 1973
HPI: 56.40
Rank: 200
Gram Parsons
MUSICIAN
1946 - 1973
HPI: 56.30
Rank: 201
Jascha Horenstein
CONDUCTOR
1898 - 1973
HPI: 56.25
Rank: 202
Romeo Bertini
ATHLETE
1893 - 1973
HPI: 56.24
Rank: 203
Josué de Castro
SOCIAL ACTIVIST
1908 - 1973
HPI: 56.22
Rank: 204
Carlos Menditeguy
RACING DRIVER
1914 - 1973
HPI: 56.17
Rank: 205
William Justin Kroll
INVENTOR
1889 - 1973
HPI: 56.14
Rank: 206
Hans Haas
ATHLETE
1906 - 1973
HPI: 56.14
Rank: 207
Jean Barraqué
COMPOSER
1928 - 1973
HPI: 56.04
Rank: 208
Ōten Shimokawa
COMIC ARTIST
1892 - 1973
HPI: 56.03
Rank: 209
Rodolphe Hiden
SOCCER PLAYER
1909 - 1973
HPI: 56.03
Rank: 210
François Bonlieu
SKIER
1937 - 1973
HPI: 56.00
Rank: 211
Washington Ortuño
SOCCER PLAYER
1928 - 1973
HPI: 55.99
Rank: 212
In Luxembourg
Among people born in Luxembourg, William Justin Kroll ranks 51 out of 95. Before him are Paul Eyschen (1841), Jean Asselborn (1949), Léon Krier (1946), Johny Schleck (1942), Lydie Polfer (1952), and Curt von François (1852). After him are Princess Sophie of Luxembourg (1902), Jean-Jacques Willmar (1792), Michel Scheuer (1927), Jacques Poos (1935), Prince Guillaume of Luxembourg (1963), and Désirée Nosbusch (1965).
Others born in Luxembourg
Go to all RankingsPaul Eyschen
POLITICIAN
1841 - 1915
HPI: 56.63
Rank: 45
Jean Asselborn
POLITICIAN
1949 - Present
HPI: 56.42
Rank: 46
Léon Krier
ARCHITECT
1946 - 2025
HPI: 56.36
Rank: 47
Johny Schleck
CYCLIST
1942 - Present
HPI: 56.34
Rank: 48
Lydie Polfer
POLITICIAN
1952 - Present
HPI: 56.15
Rank: 49
Curt von François
GEOGRAPHER
1852 - 1931
HPI: 56.15
Rank: 50
William Justin Kroll
INVENTOR
1889 - 1973
HPI: 56.14
Rank: 51
Princess Sophie of Luxembourg
NOBLEMAN
1902 - 1941
HPI: 56.06
Rank: 52
Jean-Jacques Willmar
POLITICIAN
1792 - 1866
HPI: 55.72
Rank: 53
Michel Scheuer
ATHLETE
1927 - 2015
HPI: 55.28
Rank: 54
Jacques Poos
POLITICIAN
1935 - 2022
HPI: 54.97
Rank: 55
Prince Guillaume of Luxembourg
NOBLEMAN
1963 - Present
HPI: 54.84
Rank: 56
Désirée Nosbusch
ACTOR
1965 - Present
HPI: 54.58
Rank: 57
Among INVENTORS In Luxembourg
Among inventors born in Luxembourg, William Justin Kroll ranks 1.