Leonard Kaplan
29Patents
7h-index
6Co-inventors
54Inventor score
Filing activity: Jan 2, 1975 → Aug 30, 1982
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4355341A | Power protection circuit for transistors | Electricity | 33 | Expired |
| US4471237A | Output protection circuit for preventing a reverse current | Electricity | 12 | Expired |
| US4321648A | Over-current protection circuits for power transistors | Electricity | 11 | Expired |
| US3944588A | Catalytic process for polyhydric alcohols and derivatives | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4380740A | Current amplifier | Electricity | 9 | Expired |
| US4225897A | Overcurrent protection circuit for power transistor | Electricity | 8 | Expired |
| US4162261A | Novel solvents for the catalytic process for making polyhydric alcohols | Chemistry; Metallurgy | 7 | Expired |
| US4362820A | Process for producing ethylene glycol and methanol | Emerging Cross-Sectional Technologies | 7 | Expired |
| US3995235A | Phase control circuit including an operational transconductance amplifier suitable for use in audio frequency signal processing apparatus | Physics | 6 | Expired |
| US4278946A | Current scaling circuitry | Physics | 6 | Expired |
| US4180781A | Biasing and drive circuitry for quasi-linear transistor amplifiers | Electricity | 5 | Expired |
| US4463318A | Power amplifier circuit employing field-effect power transistors | Electricity | 5 | Expired |
| US4199521A | Process for producing polyhydric alcohols and derivatives | Chemistry; Metallurgy | 3 | Expired |
| US4188593A | RC Oscillator | Electricity | 3 | Expired |
| US4415747A | Process for making ethylene glycol derivatives | Chemistry; Metallurgy | 3 | Expired |
| US4197253A | Catalytic process for producing polyhydric alcohols | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4151192A | Promoting n-propyl alcohol formation with vanadium compounds | Chemistry; Metallurgy | 2 | Expired |
| US4180782A | Phantom full-bridge amplifier | Electricity | 2 | Expired |
| US4224237A | Catalytic process for polyhydric alcohols and derivatives | Chemistry; Metallurgy | 2 | Expired |
| US4562272A | Process for preparing cyclic polyethers | Chemistry; Metallurgy | 2 | Expired |
| US4320063A | Ammonium carboxylates | Chemistry; Metallurgy | 1 | Expired |
| US4092609A | Circuit for reducing ripple voltage | Electricity | 1 | Expired |
| US4153623A | Promoting propylene glycol formation with compounds of aluminum | Chemistry; Metallurgy | 1 | Expired |
| US4283578A | Process for making glycol | Chemistry; Metallurgy | 1 | Expired |
| US4190598A | Catalytic process for production of polyhydric alcohols in presence of ammonium carboxylates | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.