PatentBrief

Inventor

David K. Donald

Patents indexed

1

Year range

1984

Associated with

Years active

1984

Total patents

1

Most recent

1984

Frequent collaborator

John L. Vaught

Domains

consumer_electronicsmechanical

Activity by decade

1980s
1

Patents

1

Career timeline

1 patents, in 1984

Dot size = forward citations

19841985

Hover or tap any dot to see the patent. Larger dots indicate more forward citations — a proxy for downstream influence.

US 4490728·1984·Hewlett Packard Co

How Thermal Inkjet Printers Use Two-Step Heating to Shoot Ink

Hewlett-Packard's 1982 patent on a two-stage electrical pulse method that preheats ink before vaporizing it, allowing thermal inkjet printers to reliably eject precise droplets without clogging.

Patent monitoring

Get a weekly digest when new patents naming David K. Donald are indexed.

Get alerts →