These are the patents gathered from the WWW that are assigned to James Churchward (1851-1936)

Number	Patent Name	Inventor	Date Filed	Date issued	Location
US0421386	Spike	Churchward, James	12/31/1889	2/18/1890	Brooklyn, New York
US0425407	Railway Spike	Churchward, James	12/16/1889	4/15/1890	Brooklyn, New York
US0434918	Wear plate for railway ties	Churchward, James	4/16/1890	8/26/1890	Brooklyn, New York
US0468928	Apparatus for Manufacturing Railway-Tie Plates	Churchward, James	6/30/1891	2/16/1892	Brooklyn, New York
US0492527	Railway Spike	Churchward, James	2/11/1892	2/28/1893	Brooklyn, New York
US0492528	Wear plate	Churchward, James	2/16/1892	2/28/1893	Brooklyn, New York
US0496337	Rolls for wearing plates	Churchward, James	9/1/1892	4/25/1893	Brooklyn, New York
US0508086	Wear plate	Churchward, James	2/20/1893	11/7/1893	Brooklyn, New York
US0832770	Art of Hardening and Toughening Steel	Churchward, James	7/13/1906	10/9/1906	Manhattan, New York
US0832771	Quenching Bath for Treating Steel and Iron	Churchward, James	12/06/1905	10/9/1906	Manhattan, New York
US0832772	Art of Hardening and Toughening Metals	Churchward, James	12/07/1905	10/9/1906	Manhattan, New York
US0832773	Self-Hardening Alloy of Iron and Steel	Churchward, James	12/07/1905	10/9/1906	Manhattan, New York
US0845755	Tempering Bath for Steel	Churchward, James	9/18/1906	3/5/1907	Manhattan, New York
US0845756	Self hardening alloy of iron and steel	Churchward, James	11/1/1906	3/5/1907	Manhattan, New York
US0845757	Self hardening alloy of steel	Churchward, James	12/14/1906	3/5/1907	Manhattan, New York
US0846979	Steel alloy and its manufacture	Churchward, James	12/14/1906	3/12/1907	Manhattan, New York
US0855756	Art of Heat treatments of Steel Alloys	Churchward, James	2/6/1907	6/4/1907	New York, New York
US0867642	Alloy Steel	Churchward, James	3/5/1907	10/8/1907	New York, New York
US0868327	Alloy Steel	Churchward, James	4/12/1907	10/15/1907	New York, New York
US0883698	Art of hardening and toughening steel	Churchward, James	4/9/1907	4/7/1908	New York, New York
US0884009	Art of producing alloyed steel	Churchward, James	9/18/1907	4/7/1908	New York, New York
US0899713	Heat treatment and quenching of alloyed steels	Churchward, James	9/18/1907	9/29/1908	New York, New York
US1069318	Pyrometer	Churchward, James	3/22/1911	8/5/1913	Mount Vernon, New York
US1069387	Steel process	Churchward, James	3/18/1911	8/5/1913	Mount Vernon, New York
US1069601	Furnace	Churchward, James	4/26/1911	8/5/1913	New York, New York
US1122861	Alloyed Steel	Churchward, James	3/18/1911	12/29/1914	New York, New York
US1181570	Alloyed steel	Churchward, James	3/18/1911	5/2/1916	Mount Vernon, New York
US1251341	Alloy	Churchward, James	8/8/1917	12/25/1917	Lakeville, Conn.
US1261742	Alloy	Churchward, James	12/19/1917	4/2/1918	Lakeville, Conn.
US1261743	Alloy	Churchward, James	12/19/1917	4/2/1918	Lakeville, Conn.
US1407517	Step construction for automobiles	Churchward, James	8/20/1917	2/21/1922	Lakeville, Conn.