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Reginald A. Fessenden was a Canadian inventor who worked on methods for detecting icebergs after the sinking of the Titanic. His work on the transmission of acoustic waves in water lead to U.S. Patent 1,240,328 issued on September 18, 1917, for a "Method and apparatus for locating ore bodies" using acoustic waves. This was the first patent on the seismic method to cover both refraction and reflection techniques, and together with a number of subsequent Fessenden patents was a constant worry to companies interested in using seismic methods for the next 20 years or so. It was bought by Geophysical Research Corporation, an Amerada subsidiary, in 1925.
The Fessenden patents were pooled with others in the Seismic Immunities Group in 1937, in an out of court settlement of a patent dispute between The Texas Development Company and Sun Oil Company.
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