Charles Sumner Tainter - Patents

Patents

Patent images viewable in TIFF format

• U.S. Patent 235,496 Photophone Transmitter, filed September 1880, issued December 1880 (with Alexander Bell)
• U.S. Patent 235,497 Selenium Cell, filed September 1880, issued December 1880 (with Alexander Bell)
• U.S. Patent 235,616 Process Of Treating Selenium To Increase Its Electric Conductivity, filed August 1880, issued December 1880 (with Alexander Bell)
• U.S. Patent 241,909 Photophonic Receiver, filed March 1881, issued May 1881 (with Alexander Bell)
• U.S. Patent 336,173 Telephone Transmitter (using a "jet of conductive fluid"), filed April 1885, issued February 1886
• U.S. Patent 341,212 Reproducing Sounds from Phonograph Records (without using a stylus), filed November 1885, issued May 1886 (with Alexander and Chichester Bell)
• U.S. Patent 341,213 Transmitting And Recording Sounds By Radiant Energy, filed November 1885, issued May 1886 (with Alexander and Chichester Bell)
• U.S. Patent 341,214 Recording and Reproducing Speech and Other Sounds (improvements include compliant cutting head, wax surface, and constant linear velocity disk), filed June 1885, issued May 1886 (with Chichester Bell)
• U.S. Patent 341,288 Apparatus for Recording and Reproducing Sounds (wax coated cylinder, pause and reverse mechanism), filed December 1885, issued May 1886
• U.S. Patent 374,133 Paper Cylinder for Graphophonic Records (helically wound), filed April 1887, issued November 1887
• U.S. Patent 375,579 Apparatus for Recording and Reproducing Speech and Other Sounds (with treadle drive designed for dictation), filed July 1887, issued December 1887
• U.S. Patent 380,535 Graphophone (with duplicate transcription), filed December 1887, issued April 1888
• U.S. Patent 421,450 Graphophone Tablet (hard "ozocerite" (carnauba wax) cylinder coating), filed November 1887, issued February 1890
• U.S. Patent 428,646 Machine for the Manufacture of Wax-coated Tablets for Graphophones (helically wound paper tubes), filed June 1889, issued May 1890