Krebs Pigments and Chemical Company was founded in 1902 by Henrik J. Krebs and was a manufacturer of lithopone and titanium dioxide.[1][2][3]
The company was founded in 1902 by Henrik J. Krebs in Newport, Delaware.[4][1] After the death of Krebs in 1929 the company was purchased by DuPont.[2][5]
In 1931 DuPont formed a joint venture with Commercial Pigments Corporation to scale up titanium dioxide production for use as a white pigment, to compete against National Lead.[6] The joint venture was named the Krebs Pigment and Color Corporation.[1][7]
By 1933 National Lead and DuPont ended their patent litigation and cross licensed their patents and synthetic routes. In 1934, DuPont purchased the Commercial Pigments Corporation’s 30 percent stake in the company for $7,420,000.[8] In 1935 Phelps was named the assistant general manager.[3] It then became a wholly owned subsidiary of DuPont. DuPont then called it the “Krebs Pigments Department” and by 1942 it became just the “Pigments Department”.[9][1][3] DuPont then liquidated all Krebs Pigment and Color Corporation’s assets and transferred them to the DuPont Company.[1]

^ a b c d e “Krebs Pigment & Chemical Company”. DuPont. Retrieved 2011-10-24. Founded in 1902 by Henrick J. Krebs, Krebs Pigments and Chemical Company produced lithopone, a widely used white paint pigment also manufactured by DuPont. But Krebs’ company had another asset of special interest to DuPont. … 
^ a b “90 Years with PCI: A Retrospective In the 1910s”. Paint and Coatings Industry. January 1, 2004. Retrieved 2011-10-24. DuPont traces its beginnings in the TiO2 marketplace to its 1920’s acquisition of the Krebs Pigment & Chemical Company of Newport, DE, a purchase designed to strengthen DuPont’s position in the pigments market. Founded in 1902, Krebs Pigments and Chemical produced lithopone, a widely used white-paint pigment also manufactured by DuPont. … 
^ a b c “The Wall Street of Chemistry”. Chemical and Engineering News. American Chemical Society. 1940. Retrieved 2011-10-24. The Krebs pigments are divided into three major classes — pure titanium dioxide, extended titanium pigments, and lithopones. …  Cite error: Invalid <ref> tag; name “phelps” defined multiple times with different content (see the help page).
^ John A. Munroe. History of Delaware. p. 188. The latter company was founded in Delaware by a Danish immigrant, Henrik J. Krebs. Its factories at Newpor