Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method, apparatus and article to test fuel cells

Method, apparatus and article to test fuel cells

US Patent 6798221 · Granted Sep 28, 2004

Estimated economic value: $4,743,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Systems and methods for anomalous sound detection2025
Automotive glazing with anti-fingerprint coating2025
Systems and methods for incorporating avatars into real-time communication sessi2024
Label display method and apparatus, electronic device, and computer-readable med2024
Toy phone2023
Hydraulic valve mechanism with variable valve opening times and internal combust2021
Low-carbon economical electromagnetic fan clutch2018
Method and mould for manufacturing drive plate of electromagnetic-fan clutch, an2017
Float glass composition adapted for chemical strengthening2017
Opposed iron core, manufacturing method thereof, and electromagnetic fan clutch 2017
Electromagnetic driving device and methods for manufacturing and controlling sam2016
Method and apparatus for locating internal transfer leaks within fuel cell stack2005