Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Certificate validity authentication method and apparatus

Certificate validity authentication method and apparatus

US Patent 7409551 · Granted Aug 5, 2008

Estimated economic value: $241,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Drilling and tapping machine2025
Drilling and tapping machine2023
Ultrasonic diagnostic apparatus, scan support method, and medical image processi2023
Method for evaluating muscular strength characteristics2022
Maintenance device, presentation system, and program2021
Ultrasonic probe2019
Ultrasonic probe2019
Ultrasonic transmission/reception condition optimization method, ultrasonic tran2017
Determination method for cryptographic algorithm used for signature, validation 2016
Ultrasonic diagnostic apparatus, phase shift transmission/reception control meth2015
Ultrasound probe and method of manufacturing ultrasound probe2015
Ultrasound transducer, ultrasound probe, and a method for manufacturing ultrasou2014