Inventor

YOSHIKAWA TETSUMASA

US4 patents

⚠️ This page may combine multiple inventors who share the name “YOSHIKAWA TETSUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RINGCENTRAL INC

3 patents

US11595515B2Feb 28, 2023

System and method of caller verification

RINGCENTRAL INC9 citations82

US12170742B2Dec 17, 2024

System and method of caller verification

RINGCENTRAL INC0 citations59

US9936434B2Apr 3, 2018

Method and phone system for pre-call quality of service assessment of available networks

RINGCENTRAL INC0 citations37

NOOK DIGITAL LLC

1 patent

US9423932B2Aug 23, 2016

Zoom view mode for digital content including multiple regions of interest

NOOK DIGITAL LLC6 citations67