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Inventor

Hien Duc Ma

Inventor
Delray Beach, FL, US

Overview

4→
Patents
2001–2021
Patent span
Physics
Primary field (CPC G)

Patents· 4 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 purposes22%
G07FCoin-freed or like apparatus22%
G11BInformation storage based on relative movement between record carrier and transducer11%
H01QAntennas, i.e. radio aerials11%
H04HBroadcast communication11%
H04LTransmission of digital information, e.g. telegraphic communication11%
LOC2811%
PatentTitleYear
D0923187Massage gun20218,054,968'Method and apparatus for providing prepaid music card for deciphering recorded broadcast audio signals'20116,563,805'Digital radio prepaid music recording system'20036,232,926'Dual coupled vehicle glass mount antenna system'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2003Patents assigned to XM SATELLITE RADIO INC (2)· patent assignee history
2001–2011Based in Delray Beach, FL, US· patent location history
2011Patents assigned to SIRIUS XM RADIO INC (1)· patent assignee history
2021Patents assigned to SHENZHEN SHUFANG INNOVATION TECH CO LTD (1)· patent assignee history
2021Based in Shenzhen, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
XM SATELLITE RADIO INC22001–2003
SHENZHEN SHUFANG INNOVATION TECH CO LTD12021
SIRIUS XM RADIO INC12011
Locations
LocationPatentsSpan
Delray Beach, Florida, US32001–2011
Shenzhen, CN12021