LexDanaLexDanabeta
Inventor

John G. Christopher

Inventor
Berkeley, IL, US

Overview

5→
Patents
1993–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 5 as inventor

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

G06Qprimary
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes33%
H03GControl of amplification33%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers17%
Y02PClimate change mitigation technologies in the production or processing of goods17%
PatentTitleYear
11,100,477Electronic capital marketplace systems and methods202110,817,932Dynamic discounting system and method20205,353,244'Computer controlled transversal equalizer'19945,297,075'Computer controlled transversal equalizer'19945,259,035'Automatic microphone mixer'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–1994Patents assigned to KNOWLES ELECTRONICS INC (3)· patent assignee history
1993–1994Based in Berkeley, IL, US· patent location history
2020Patents assigned to CHRISTOPHER JOHN G (1)· patent assignee history
2020Patents assigned to HEDRICK GEORGE WESLEY (1)· patent assignee history
2020Patents assigned to IORIO PATRICIA (1)· patent assignee history
2020Patents assigned to KEMPER ALEXANDER C (1)· patent assignee history
2020–2021Based in Kansas City, KS, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KNOWLES ELECTRONICS INC31993–1994
CHRISTOPHER JOHN Gself12020
HEDRICK GEORGE WESLEY12020
IORIO PATRICIA12020
KEMPER ALEXANDER C12020
Locations
LocationPatentsSpan
Berkeley, Illinois, US31993–1994
Kansas City, KS, US22020–2021