Inventor

FEINN JAMES A

US39 patents

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

FEINN JAMES A

HEWLETT PACKARD DEVELOPMENT CO

Fire pulses in a fluid ejection device

Inkjet printhead assembly having very high drop rate generation

Inkjet printhead having ink feed channels defined by thin-film structure and orifice layer

Printhead with high nozzle packing density

Microfluidic system utilizing thin-film layers to route fluid

Disabling ink ejection elements to decrease dot placement artifacts in an inkjet printhead

Barrier/orifice design for improved printhead performance

Fire pulses in a fluid ejection device

System and method for decreasing print banding with time delay synchronization of ejected ink

Fluid distinguishing devices

Temperature-based actuator evaluation

Fluid ejection device

Printhead with circulation channel

Enhancing temperature distribution uniformity across a printer die

Enhancing temperature distribution uniformity across a printer die

Noncircular inkjet nozzle

Noncircular inkjet nozzle

Method of fabricating a fluid ejection device having a data storage structure

Fluid ejection device with data storage structure

Variable mapping of nozzle rows to decrease dot placement artifacts of an inkjet printhead

Fluidic property determination from fluid impedances

HEWLETT PACKARD CO

Inkjet printhead assembly having very high nozzle packing density

Wide-array inkjet printhead assembly with internal electrical routing system

Decoupled nozzle plate and electrical flexible circuit for an inkjet print cartridge

Apparatus for generating high frequency ink ejection and ink chamber refill

Apparatus for generating high frequency ink ejection and ink chamber refill

Ink leakage detecting apparatus

Inkjet print cartridge design to decrease ink shorts due to ink penetration of the printhead

Inkjet printhead design to reduce corrosion of substrate bond pads

Non-kogating, low turn on energy thin film structure for very low drop volume thermal ink jet pens

Fractional dot column correction for scan axis alignment during printing

Apparatus for generating small volume, high velocity ink droplets in an inkjet printer

Multi-drop merge on media printing system

Apparatus and method for routing power and ground lines in a ink-jet printhead

Print cartridge with adhesive dispensed through window of flexible circuit

FEINN JAMES A

Noncircular inkjet nozzle

Noncircular inkjet nozzle

WHITE LAWRENCE H

Fluid ejection device having firing chamber with mesa

STRAND THOMAS R

Dispensing heads with fluid puddle limiting surface features