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For the Inventor, By the Inventor

Mesa, AZ, United States of America

Dennis L Welty

This inventor holds 13 USPTO granted patents. Top assignee: Motorola Corporation. Active years: 1984-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Dennis L Welty. Retrieved from https://idiyas.com/inventor/dennis-l-welty

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

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 8

Forward Citations = 119(Granted Patents)


Company Filing History:

goldMedal13 out of 20,290 
 
Motorola Corporation
 patents

Years Active: 1984-2001

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13 patents (USPTO):Explore Patents
1. 6263199 - Circuit and method of signal frequency conversion (2001-07-17),
2. 6104227 - RF mixer circuit and method of operation (2000-08-15),
3. 5329585 - Subscriber line interface circuit for controlling AC and DC output (1994-07-12),
4. 5198957 - Transient protection circuit using common drain field effect transistors (1993-03-30),
5. 4994758 - Alpha enhancement of a transistor using base current feedback to the (1991-02-19),
6. 4724540 - Speakerphone with fast idle mode (1988-02-09),
7. 4720856 - Control circuit having a direct current control loop for controlling the (1988-01-19),
8. 4689506 - Control circuit for use with electronic attenuators and method for (1987-08-25),
9. 4648103 - Flip-flop having divide inhibit circuitry to change divide ratio (1987-03-03),
10. 4599494 - Ring sense telephone tone ringer circuit (1986-07-08),
11. 4491804 - Bias circuit which is independent of output device voltage (1985-01-01),
12. 4485341 - Current limiter circuit (1984-11-27),
13. 4431874 - Balanced current multiplier circuit for a subscriber loop interface (1984-02-14),

Title: Celebrating the Innovations of Dennis L Welty

Introduction

Dennis L Welty is a distinguished inventor based in Mesa, Arizona, known for his significant contributions to the field of signal processing and RF (Radio Frequency) technologies. With an impressive portfolio of 13 patents, Welty's inventions reflect a robust understanding of engineering principles and innovative solutions in his domain.

Latest Patents

Among his latest innovations is a patent for a Circuit and Method of Signal Frequency Conversion. This invention features a mixer that employs a differential transistor pair, receiving first and second reference currents. An RF signal drives the differential transistor pair, while switching circuits are employed to produce a differential IF output current representative of the frequency variations between the RF signal and an LO signal.

Another notable patent is the RF Mixer Circuit and Method of Operation. This design incorporates a unique transconductor block that provides signal gain. The configuration uses a first transistor sized significantly larger than a second transistor to achieve a desired level of signal gain, thereby optimizing the mixer’s performance.

Career Highlights

Dennis L Welty is currently associated with Motorola Corporation, where he has made substantial contributions to various pioneering projects in telecommunications and electronics. His expertise in RF mixing techniques and circuit design has been instrumental in advancing the capabilities of modern communication systems.

Collaborations

Welty has collaborated with noted professionals in the industry, including coworkers W David Pace and Don W Zobel. Their combined efforts have driven innovative projects at Motorola, enhancing the company's reputation for excellence in technology and research.

Conclusion

Dennis L Welty's innovative spirit and technical expertise position him as a leading figure in the realm of RF technologies. With a solid foundation of patents and collaborative ventures, his contributions continue to impact the telecommunications industry, paving the way for future advancements.

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]
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