US v. Adams (JWB Class)
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The Case
- Adams was issued a patent for a wet battery powered by water
- wet – electrolytes (between anode and cathode) are in a liquid
- provides battery function without using acid, dangerous fumes
- Additionally, the battery provided relatively constant current
The Prior Art
- Magnesium had been used instead of zinc, but no prior art suggested water could be used
- Non-obvious because the battery performance unexpectedly surpassed existing wet batteries
