Inventor
Guan-Hua Tzeng
Inventor
Tu-Cheng, TW
Overview
Patents· 54 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC14primary
LOC1472%
LOC1615%
LOC064%
LOC104%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers2%
LOC082%
LOC242%
PatentTitleYear
D0901503Keyboard2020D0875738Keyboard switch2020D0875069Pair of earphones2020D0865708Headset2019D0851071Audio control device2019D0840373Headset2019D0830361Mouse2018D0821839Keycap Puller2018D0818990Pair of earphones2018D0815614Headset2018D0811397'Keyboard'2018D0811396'Keyboard'2018D0811371'Audio control device'2018D0810082'Keyboard'2018D0810047'Earphone tip'2018D0808359'Headset'2018D0798308'Data accessing device'2017D0794609'Audio control device'2017D0791749'Network interface device'2017D0774038'Data accessing device'20168,666,107'Loudspeaker'2014D0680534'Multi-media player'2013D0680535'NFC device'2013D0680536'Multi-media player'2013D0674714'GPS navigation'2013D0672334'Speaker'2012D0670271'Speaker'2012D0665442'Micro projector'2012D0664579'Webcam'2012D0659683'Bluetooth headset'2012D0656615'Heartbeat ring'2012D0648769'Micro projector'2011D0645437'Mobile phone'2011D0645038'Ebook reading device'2011D0643753'Portable GPS navigation'2011D0643843'Sleeve for tablet PC'2011D0643433'Sleeve for tablet PC'2011D0641756'Sleeve for tablet PC'2011D0638839'Wireless mouse'2011D0638837'Wireless mouse'2011D0636758'Bluetooth speaker'2011D0633911'Wireless mouse'2011D0633070'Mobile phone'2011D0632718'Webcam'2011D0631079'Webcam'2011D0628222'Wireless webcam'2010D0627814'Wireless webcam'2010D0626580'Webcam'2010D0622706'Bluetooth headset'2010D0622266'Bluetooth headset'2010D0617300'Mobile phone'2010D0617299'Mobile phone'2010D0613510'Digital photo frame'2010D0609018'Digital photo frame'2010Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2010–2014Patents assigned to CHENG UEI PREC IND CO LTD (33)· patent assignee history
2010–2011Based in Tu-Cheng, TW· patent location history
2011–2014Patents assigned to TZENG GUAN-HUA (12)· patent assignee history
2012–2014Based in New Taipei, TW· patent location history
2013Patents assigned to CHENG UEI PREC INDUSTRTY CO LTD (1)· patent assignee history
2016–2020Patents assigned to KINGSTON DIGITAL INC (20)· patent assignee history
2016–2020Based in Hsinchu, TW· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CHENG UEI PREC IND CO LTD | 33 | 2010–2014 |
| KINGSTON DIGITAL INC | 20 | 2016–2020 |
| TZENG GUAN-HUAself | 12 | 2011–2014 |
| CHENG UEI PREC INDUSTRTY CO LTD | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tu-Cheng, TW | 23 | 2010–2011 |
| Hsinchu, TW | 20 | 2016–2020 |
| New Taipei, TW | 11 | 2012–2014 |