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| Patents for I. Newton Hopkins | |||||
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| Number | Date | Patentee | Title | Type | |
| 284,851 | Sep. 11, 1883 | I.N. Hopkins, G.M. Hopkins | Gas Engine | gas and gasoline engines | |
| 305,452 | Sep. 23, 1884 | I.N. Hopkins, G.M. Hopkins | Gas Engine | gas and gasoline engines | |
| 306,924 | Oct. 21, 1884 | I.N. Hopkins | Gas Engine | gas and gasoline engines | |
| 379,397 | Mar. 13, 1888 | I.N. Hopkins | Gas Engine | gas and gasoline engines | |