LexDanaLexDanabeta
Inventor

Ronald J. Johnsen

Inventor
Cary, NC, US

Overview

5→
Patents
1992–2001
Patent span
Physics
Primary field (CPC G)

Patents· 5 as inventor

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

G06Kprimary
G06KGraphical data reading38%
B41JTypewriters25%
G10KSound-producing devices13%
H04MTelephonic communication13%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers13%
PatentTitleYear
6,215,391'Variable frequency buzzer assembly'20015,825,375'Ink jet system with serial data printheads'19985,606,349'Ink jet system with serial data printheads'19975,600,718'Apparatus and method for adaptively precompensating for loudspeaker distortions'19975,115,493'Continuous laser printer for printing over page boundaries'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to HUTCHISON STEPHEN E (1)· patent assignee history
1992Patents assigned to JEANBLANC IVAN M (1)· patent assignee history
1992Based in Manchester, MO, US· patent location history
1997–1998Patents assigned to DIAGRAPH CORP (2)· patent assignee history
1997Patents assigned to ERICSSON GE MOBILE INC (1)· patent assignee history
1997–2001Based in Cary, NC, US· patent location history
2001Patents assigned to ERICSSON INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DIAGRAPH CORP21997–1998
ERICSSON GE MOBILE INC11997
ERICSSON INC12001
HUTCHISON STEPHEN E11992
JEANBLANC IVAN M11992
Locations
LocationPatentsSpan
Cary, NC, US41997–2001
Manchester, MO, US11992