South Dakota — Patent Inventors

Top Cities in South Dakota All Time

Rank	City	Patents	Inventors
#1	Sioux Falls, SD	2,291	532
#2	Rapid City, SD	931	295
#3	Brookings, SD	689	175
#4	Yankton, SD	285	93
#5	Dakota Dunes, SD	255	48
#6	Mitchell, SD	242	65
#7	Watertown, SD	194	83
#8	Brandon, SD	140	38
#9	Spearfish, SD	135	41
#10	Harrisburg, SD	122	27
#11	Volga, SD	121	16
#12	Aberdeen, SD	115	37
#13	Box Elder, SD	111	18
#14	Vermillion, SD	107	33
#15	Beresford, SD	105	17
#16	Huron, SD	89	46
#17	Pierre, SD	71	28
#18	Hartford, SD	65	20
#19	Garretson, SD	60	7
#20	Madison, SD	60	18
#21	Canton, SD	52	19
#22	London, SD	52	2
#23	Elk Point, SD	48	18
#24	Centerville, SD	48	5
#25	Salem, SD	46	6

Rank	Inventor	City	Company	Patents
1	Roger L. Lussenden	Sioux Falls	Monsanto Technology	215
2	Debra Kay Steiger	Sioux Falls	Pioneer (Corteva)	103
3	Jay Robert Hotchkiss	Brookings	Pioneer (Corteva)	89
#4	Joseph W. Cole	Box Elder	Cole Kepro International	64
#5	Craig N. Hansen	Sioux Falls	Hansen Engine	61
#6	Gerhard P Weber	Sioux Falls	Pioneer (Corteva)	59
#7	Patrick W. Kelly	Sioux Falls	Sanford Health	55
#8	Eldon Roth	Dakota Dunes	Freezing Machines	46
#9	Christopher Michael Schaefer	Volga	Pioneer (Corteva)	43
#10	Vance M. Thompson	Sioux Falls	Tearoptix	41
#10	Eric R. Hansen	Centerville	Ash Grove Cement	41
#10	Wilbur James Kellum, III	Garretson	Amesbury Group	41
#13	Robert D. Johnson	Mitchell	Sunpower	40
#14	Donald G. Huber	Alexandria	Roofguard Manufacturing	35
#15	Michael W. Kondratuk	Brookings	Larson Manufacturing Company Of South Dakota	34
#15	Trent Sorbe	Brookings	Metabank	34
#17	Ralph R. Rogers	Dakota Dunes	Thurston Manufacturing	33
#18	Stephen M. Lewis	Sioux Falls	Poet Research	31
#18	Richard L. Peterson	Aberdeen	Hiniker	31
#18	David Schiller	Sioux Falls	Bedford Industries	31
#21	Ronald E. Utecht	Madison	Alumend	30
#22	Anthony M. Olson	Dakota Dunes	Zenith Data Systems	29
#22	John D. Crawford	Fulton	Eveready Battery Company	29
#24	Gary E. Tagtow	Sioux Falls	Amesbury Group	28
#24	David Charles Carlson	Yankton	Poet Research	28