Charles W. Engelhard Sr.
1902-present
This is Charles W. Engelhard, Sr., founder of the big precious metal refiner firm at the turn of the century. This firm later became known as the Engelhard Corporation. It is still in existence today.
For an article in the NY Times, dated in 1918, accusing this German immigrant of conspiracy with jewellers during the WWI, go to the following "Declares German Controls Platinum," New York Times June 8, 1918, http://query.nytimes.com/mem/archive-free/pdf?_r=1&res=9907E0D8163EE433A2575BC0A9609C946996D6CF (accessed 09/18/2014)
An add for this company is found "Pyrometry: the papers and discussion of a symposium on pyrometry held by the American Institute of Mining and Metallurgical Engineers at its Chicago meeting, September, 1919, in coöperation with the National Research Council and the National Bureau of Standards, American Institute of Mining, Metallurgical, and Petroleum Engineers 1920, Google Books, http://books.google.com/books?id=n7wKAAAAIAAJ&pg=PA705 (accessed 09/18/2014)
A company's history can be read at "Engelhard Corporation History," Funding Univers, http://www.fundinguniverse.com/company-histories/Engelhard-Corporation-Company-History.html (accessed 09/18/2014)