FEATURED PATENT

Pinch trigger hand pump water gun with non-detachable tank

The invention is a toy water gun which is operated by selectively releasing water from a water reservoir that is pressurized with air.
ID: US5305919A
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FEATURED PATENT

Digital distance measuring instrument

An apparatus for making distance measurements with a high degree of accuracy and a means for interpreting and displaying the results on a digital readout.
ID: US4143267A
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FEATURED PATENT

Electrochemical Conversion System

A system that converts heat energy into electrical energy utilizing a hydrogen electrochemical cell.
ID: US20020064692A1
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Patents held by Johnson Research & Development


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Johnson Research has been a dynamic and influential force behind the technological innovations in the toy industry.


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