Inventor

J. Douglas Rollow, IV

Inventor
San Francisco, CA, US

Overview

5→
Patents
2010–2021
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.

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers33%
H04LTransmission of digital information, e.g. telegraphic communication17%
H04MTelephonic communication17%
A61BDiagnosis8%
H04HBroadcast communication8%
H04JMultiplex communication8%
H04SStereophonic systems8%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010Patents assigned to AVID TECHNOLOGY INC (1)· patent assignee history
2010–2021Based in San Francisco, CA, US· patent location history
2018–2021Patents assigned to SENNHEISER ELECTRONIC GMBH & CO KG (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SENNHEISER ELECTRONIC GMBH & CO KG42018–2021
AVID TECHNOLOGY INC12010
Locations
LocationPatentsSpan
San Francisco, California, US52010–2021