Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Electret transducer

Electret transducer

US Patent 4419545 · Granted Dec 6, 1983

Estimated economic value: $577,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Photonic integrated circuit having improved electrical isolation between n-type 2023
Semiconductor diode laser with monitor diode1993
Tunable semiconductor diode laser with distributed reflection1991
Coating for DFB/DBR laser diodes1990
Distributed feedback laser with anti-reflection layer1989