This inventor holds 2 USPTO granted patents. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1988-1989.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Mishima, JP (1988)
- Osaka, JP (1989)
Company Filing History:
Years Active: 1988-1989
Title: Tadashi Yamada: Television Tuning and High-Frequency Signal Inventions.
Introduction. Tadashi Yamada is an inventor associated with Mishima, Japan, and Matsushita Electric Industrial Co., Ltd. His recorded portfolio includes 2 patents concerning television tuning and high-frequency signal amplification.
Latest Patents. Yamada’s listed patents include “Channel Selection Apparatus Having Automatic Frequency Compensation.” The invention describes a double-superheterodyne tuner that selects a television channel and uses automatic frequency control to compensate for transmission-frequency offsets. Depending on the AFC switch setting, the circuit adjusts either the second local oscillator through closed-loop control or the first local oscillator using a fixed control voltage.
Another listed patent is “Amplifier for High Frequency Signal,” addressing amplification of high-frequency signals.
Career Highlights. Yamada’s patent work is associated with Matsushita Electric Industrial Co., Ltd., now known as Panasonic Corporation. His listed inventions reflect work on television receiver circuitry and high-frequency signal processing.
Collaborations. Akira Usui and Hiroyuki Nagai are identified as Yamada’s coworkers.
Conclusion. Tadashi Yamada’s recorded inventions focus on practical electronic technologies, including automatic frequency compensation for television channel selection and high-frequency signal amplification.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile