Inventor

JOHNSON JR ROBERT W

US38 patents

⚠️ This page may combine multiple inventors who share the name “JOHNSON JR ROBERT W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

JOHNSON JR ROBERT W

UNION CAMP CORP

Acid-modified polyhydric alcohol rosin ester tackifiers and hot melt adhesive compositions containing those tackifiers

Method of preparing rosin ester from polyol with phosphorous acid catalyst

Method of preparing rosin esters of improved thermal stability with inorganic salt of phosphorous or hypophosphorous acid

Process of preparing polyol esters of rosin with excess rosin

Method of preparing hot-melt stable rosin ester with organic ester of hypophosphorous acid catalyst

Process for preparing rosin esters of improved color

Method for the preparation of light-colored rosin esters

Method of improving the color of tall oil rosin esters by recrystallizing and distilling rosin followed by esterifying

Stabilized rosin esters and hot melt adhesives containing them

Stabilization of modified rosin

POWERWARE CORP

Power converters with AC and DC operating modes and methods of operation thereof

Power factor corrected UPS with improved connection of battery to neutral

Multi-mode power converters incorporating balancer circuits and methods of operation thereof

Power factor corrected UPS with improved connection of battery to neutral

Power factor corrected UPS with improved connection of battery to neutral and methods of operation thereof

Power factor corrected UPS maintaining neutral integrity and methods of operation thereof

Uninterruptible power supplies with dual-sourcing capability and methods of operation thereof

Power conversion apparatus and methods using balancer circuits

EATON CORP

Uninterruptible power distribution systems and methods using distributed power distribution units

Modular electronic systems and methods using flexible power distribution unit interface

UPS systems having multiple operation modes and methods of operating same

Temperature monitoring in uninterruptible power supply systems using synthetic loading

Power systems and methods using an uniterruptible power supply to transition to generator-powered operation

Modular UPS systems and methods using modular interconnect assemblies

Devices and methods for detecting operational failures of relays

EATON POWER QUALITY CORP

Multi-mode uninterruptible power supplies and methods of operation thereof

Power factor corrected UPS with improved connection of battery to neutral

Power factor corrected UPS with improved connection of battery to neutral

Power interconnect assemblies and methods for configuring the same

EXIDE ELECTRONICS CORP

Isolated gate drive

Uninterruptible power supply with isolated bypass winding

Power supply with improved circuit for harmonic paralleling

Voltage source with enhanced source impedance control

EXIDE ELECTRONICS

Ups-computer system and method for initiating computer shutdown based on remaining battery time as determined from sensed battery voltage and discharge curves

Uninterrupted power supply system having improved power factor correction circuit

Uninterrupted power supply having no low frequency power magnetics

Uninterruptible power supply having improved battery charger

JOHNSON JR ROBERT W

Power supply loading indicators and methods