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| Patents for Benjamin Henfrey | |||||
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| Number | Date | Patentee | Title | Type | |
| 316X | Feb. 12, 1801 | B. Henfrey, T. Bedwell | Evaporating Machine | evaporating apparatus | |
| 320X | Mar. 02, 1801 | B. Henfrey | Mode of increasing evaporation for the purpose of distilling | distilling apparatus | |
| 366X | Apr. 16, 1802 | B. Henfrey | Improvement Being a Cheap Mode of Obtaining Light From Fuel | manufacturing processes | |