Inventor · disambiguated record
Songan Andy Chang
Also filed as: CHANG SONGAN ANDY
4 granted patents·4 pending applications·10 citations·filing 2012–2017
68Inventor score
Technology areasG06F
Top patents by PatentIndex Score
8 records- 0170US9250681B2Infrared reflection based cover detectionBARNESANDNOBLE COM LLC·Filed 2012·Granted Feb 2, 2016·4 cites·12 claims
- 0269US9134849B2Pen interface for a touch screen deviceBARNESANDNOBLE COM LLC·Filed 2012·Granted Sep 15, 2015·3 cites·9 claims
- 0368US9836154B2Selective touch scan area and reporting techniquesNOOK DIGITAL LLC·Filed 2013·Granted Dec 5, 2017·3 cites·16 claims
- 0452US10152175B2Selective touch scan area and reporting techniquesNOOK DIGITAL LLC·Filed 2017·Granted Dec 11, 2018·0 cites·20 claims
- 0540US2014043265A1System and method for detecting and interpreting on and off-screen gesturesBARNESANDNOBLE COM LLC·Filed 2013·Application pending·0 cites
- 0638US2014247238A1System and method for dual mode stylus detectionBARNESANDNOBLE COM LLC·Filed 2013·Application pending·0 cites
- 0737US2014176450A1System and apparatus for adaptive setting of scan rateBARNESANDNOBLE COM LLC·Filed 2012·Application pending·0 cites
- 0837US2014176451A1Method for adaptive scan rate for an electronic deviceBARNESANDNOBLE COM LLC·Filed 2012·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Songan Andy Chang files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →