Sadahiko Yamashita

This inventor holds 33 USPTO granted patents, primarily in Frequency Synthesis. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1977-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sadahiko Yamashita. Retrieved from https://idiyas.com/inventor/sadahiko-yamashita

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 33

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 14

Forward Citations = 609(Granted Patents)

Location History:

Kawasaki, JA (1977)
Kawasaki, JP (1978 - 1983)
Sagamihara, JP (1982 - 1988)
Kanagawa, JP (1988)

Company Filing History:

33 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

Years Active: 1977-1988

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Areas of Expertise:

Frequency Synthesizer

Coaxial Dielectric Resonator

Double Superheterodyne Tuner

Microwave Mixing Circuit

Bandpass Filter

Voltage-Controlled Oscillator

Strip-Line Resonator

Hybrid Microwave Circuit

Frequency Divider Circuit

Temperature Compensated Resonator

Compact Electronic Tuning Device

Impedance Matched Tuning Device

33 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4726072 - Double converter tuner (1988-02-16),

2. 4720688 - Frequency synthesizer (1988-01-19),

3. 4679003 - Frequency divider circuit and frequency synthesizer using the same (1987-07-07),

4. 4661998 - Double superheterodyne tuner (1987-04-28),

5. 4651344 - VHF-UHF mixer having a balun (1987-03-17),

6. 4638180 - Frequency divider circuits (1987-01-20),

7. 4631506 - Frequency-adjustable coaxial dielectric resonator and filter using the (1986-12-23),

8. 4592095 - Microwave FET mixer arranged to receive RF input at gate electrode (1986-05-27),

9. 4590443 - Transistor oscillator with compensating circuit for variable (1986-05-20),

10. 4583064 - Strip-line resonator (1986-04-15),

11. 4553264 - Double superheterodyne tuner (1985-11-12),

12. 4536724 - Voltage-controlled oscillator having three or more varactor diodes (1985-08-20),

13. 4506241 - Coaxial dielectric resonator having different impedance portions and (1985-03-19),

14. 4449108 - Band-stop filter for VHF-UHF band (1984-05-15),

15. 4437076 - Coaxial filter having a plurality of resonators each having a bottomed (1984-03-13),

Title: Sadahiko Yamashita: Pioneering Inventor from Sagamihara

Introduction: Sadahiko Yamashita is a renowned inventor hailing from Sagamihara, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Yamashita's latest patents include advancements in artificial intelligence algorithms for autonomous vehicles, wearable technology for healthcare monitoring, and sustainable energy solutions.

Career Highlights: With over two decades of experience in research and development, Yamashita has worked with leading tech companies in Japan, spearheading projects that have revolutionized various industries.

Collaborations: Throughout his career, Yamashita has collaborated with top universities and research institutions worldwide, fostering a culture of innovation and knowledge sharing.

Conclusion: Sadahiko Yamashita's dedication to pushing the boundaries of technology and his passion for creating impactful solutions have solidified his reputation as a visionary inventor in the global innovation landscape.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]