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Inventor

David Arthur Berkley

Inventor
Summit, NJ, US

Overview

8→
Patents
1976–2012
Patent span
Electricity
Primary field (CPC H)

Patents· 8 as inventor

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

H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication24%
H04MTelephonic communication18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
H04BTransmission12%
G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves6%
G06FElectric digital data processing6%
G10LSpeech analysis techniques or speech synthesis6%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
8,130,751'Active user registry'20127,408,920'Active user registry'20086,546,009'Method of reducing delays in packet data transmission'20036,546,005'Active user registry'20035,956,668'Method and apparatus for speech translation with unrecognized segments'19994,429,189'Electret transducer with a selectively metalized backplate'19844,166,924'Removing reverberative echo components in speech signals'1979RE028919'Speech processor using controlled center clipping'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1984Based in New York, NY, US· patent location history
1979–1984Patents assigned to BELL TELEPHONE LABOR INC (2)· patent assignee history
1999–2008Patents assigned to AT & T CORP (4)· patent assignee history
1999–2012Based in Summit, NJ, US· patent location history
2012Patents assigned to AT & T IP II LP (1)· patent assignee history
2012Patents assigned to BERKLEY DAVID ARTHUR (1)· patent assignee history
2012Patents assigned to RABINER LAWRENCE RICHARD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AT & T CORP41999–2008
BELL TELEPHONE LABOR INC21979–1984
AT & T IP II LP12012
BERKLEY DAVID ARTHURself12012
RABINER LAWRENCE RICHARD12012
Locations
LocationPatentsSpan
Summit, New Jersey, US51999–2012
New York, New York, US31976–1984