Inventor

COWGER BRUCE

US60 patents

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

COWGER BRUCE

HEWLETT PACKARD CO

Ink delivery system adapter

Ink jet cartridge with separately replaceable ink reservoir

Replaceable pump module for receiving replaceable ink supplies to provide ink to an ink jet printing system

Method and apparatus for selecting printer consumables

Ink container having electronic and mechanical features enabling plug compatibility between multiple supply sizes

Ink delivery system for ink-jet pens

Unit print head assembly for ink-jet printing

Back pressure control in ink-jet printing

Ink circulation in ink-jet pens

Method and apparatus for keying ink supply containers

Ink container configured for use with compact supply station

Ink cartridge adapters

Method of manufacturing a replaceable ink supply for an ink-jet printer

Ink supply for an ink-jet printer

Ink delivery system for a printer

Ink level detection in a pressure regulated pen

Thermal ink jet pen having a feedtube with improved sizing and operational with a minimum of depriming

Volumetrically efficient ink jet pen capable of extreme altitude and temperature excursions

Method and apparatus for keying ink supply containers

Ink jet cartridge with ink level detection

Refill method for ink-jet print cartridge

Method of valving and orientation sensitive valve including a liquid for controlling flow of gas into a container

Ink delivery system for an ink-jet pen

Ink jet pen with improved volumetric efficiency

Balanced capillary ink jet pen for ink jet printing systems

Pressure control apparatus for an ink pen

Ink jet pen having improved ink storage and distribution capabilities

Method and apparatus for detecting fluid level

Collapsible ink cartridge

Humidifier apparatus for fluid-containing tubes and an improved ink-jet printer utilizing the apparatus

Level detection for ink cartridges of ink-jet printers

Protective cover apparatus for an ink-jet pen

Pressure-sensitive accumulator for ink-jet pens

Volumetrically efficient ink jet pen capable of extreme altitude and temperature excursions

Ink supply for an ink-jet printer

Method and apparatus for ejecting ink

Ink container configured for use with compact supply station

Unit print head assembly for an ink-jet printer

Refill method for ink-jet print cartridge

Controlled capillary ink containment for ink-jet pens

Ink jet printer cartridge refilling method and apparatus

Ink supply system for a printer

Ink cartridge system for ink-jet printer

Inkjet printhead and method for the same

Printing method and apparatus for registering dots

HEWLETT PACKARD CORP

Pressure-sensitive accumulator for ink-jet pens

Printing method and apparatus for registering dots

HEWLETT PACKARD DEVELOPMENT CO

Method and apparatus for providing ink to an ink jet printing system

Method and apparatus for providing ink to an ink jet printing system

(unassigned)

Ink container having electronic and mechanical features enabling plug compatibility between multiple supply sizes