Inventor

Leonard Kaplan

Inventor

Charleston, WV, US

Overview

29→

Patents

1976–1986

Patent span

Chemistry

Primary field (CPC C)

Patents· 29 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Cprimary

C07CAcyclic or carbocyclic compounds33%

H03FAmplifiers19%

Y02PClimate change mitigation technologies in the production or processing of goods13%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%

H02HEmergency protective circuit arrangements4%

H03KPulse technique4%

C07DHeterocyclic compounds2%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%

G05FSystems for regulating electric or magnetic variables2%

PatentTitleYear

4,626,551'Homogeneous liquid phase process for making alkane polyols'1986 4,562,272'Process for preparing cyclic polyethers'1985 4,471,237'Output protection circuit for preventing a reverse current'1984 4,463,318'Power amplifier circuit employing field-effect power transistors'1984 4,415,747'Process for making ethylene glycol derivatives'1983 4,380,740'Current amplifier'1983 4,362,820'Process for producing ethylene glycol and methanol'1982 4,360,600'Process for producing ethylene glycol and methanol'1982 4,355,341'Power protection circuit for transistors'1982 4,345,103'Hydroxymethylation of the carbon residue of organosilicon compounds'1982 4,321,648'Over-current protection circuits for power transistors'1982 4,320,063'Ammonium carboxylates'1982 4,283,578'Process for making glycol'1981 4,278,946'Current scaling circuitry'1981 4,225,897'Overcurrent protection circuit for power transistor'1980 4,224,237'Catalytic process for polyhydric alcohols and derivatives'1980 4,199,521'Process for producing polyhydric alcohols and derivatives'1980 4,197,253'Catalytic process for producing polyhydric alcohols'1980 4,190,598'Catalytic process for production of polyhydric alcohols in presence of ammonium carboxylates'1980 4,188,335'Novel solvents for the catalytic process for producing polyhydric alcohols'1980 4,188,593'RC Oscillator'1980 4,180,781'Biasing and drive circuitry for quasi-linear transistor amplifiers'1979 4,180,782'Phantom full-bridge amplifier'1979 4,162,261'Novel solvents for the catalytic process for making polyhydric alcohols'1979 4,153,623'Promoting propylene glycol formation with compounds of aluminum'1979 4,151,192'Promoting n-propyl alcohol formation with vanadium compounds'1979 4,092,609'Circuit for reducing ripple voltage'1978 3,995,235'Phase control circuit including an operational transconductance amplifier suitable for use in audio frequency signal processing apparatus'1976 3,944,588'Catalytic process for polyhydric alcohols and derivatives'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1986Patents assigned to UNION CARBIDE CORP (17)· patent assignee history

1976–1984Patents assigned to RCA CORP (12)· patent assignee history

1976–1986Based in Charleston, WV, US· patent location history

1976–1984Based in Fords, NJ, US· patent location history

1982–1985Based in Dunbar, WV, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNION CARBIDE CORP	17	1976–1986
RCA CORP	12	1976–1984

Locations

Location	Patents	Span
Charleston, WV, US	12	1976–1986
Fords, New Jersey, US	12	1976–1984
Dunbar, WV, US	5	1982–1985