Contact process (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Contact process" in English language version.

refsWebsite
Global rank English rank
3rd place
3rd place
800th place
676th place
1st place
1st place
low place
low place

books.google.com

espacenet.com

worldwide.espacenet.com

  • UK 6093, Peregrine Phillips Junior, "Manufacturing of Sulphuric Acid", issued 1831 
  • US 687834A, Carl Johann Eugen de Haën, "Method of Making Sulfuric Anhydrid", issued 1901-12-03 
  • US 1371004, Franz Slama & Hans Wolf, "Oxidation of sulfur dioxid and catalyst therefor", issued 1921-05-8, assigned to General Chemical Company 

ravensdown.co.nz

  • "History". Ravensdown. Archived from the original on May 23, 2010. Retrieved March 1, 2010.

web.archive.org

  • "History". Ravensdown. Archived from the original on May 23, 2010. Retrieved March 1, 2010.