Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Liquid crystal writing slate with improved light-transmission retention

Liquid crystal writing slate with improved light-transmission retention

US Patent 5136404 · Granted Aug 4, 1992

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Personal impact monitoring system2023
Personal impact monitoring system2019
Low power device with variable scheduling2018
Systems and methods for identifying a contra-ictal condition in a subject2018
Systems for monitoring brain activity and patient advisory device2017
Neurological monitoring and alerts2017
Communication error alerting in an epilepsy monitoring system2017
Nerve stimulation device with a wearable loop antenna2016
Implantable systems and methods for identifying a contra-ictal condition in a su2016
Percutaneous vein removal device2014
Implantable systems and methods for identifying a contra-ictal condition in a su2013
Suspension tongue design for varying the static pitch and roll torque on the sli2012