Company Filing History:

8 out of 1,088

International Telephone and Telegraph Corporation

Years Active: 1979-1987

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4674119 - Wide-band high voltage amplifier for telephone exchange subscriber line (1987-06-16),

2. 4656659 - Programmable ring signal generator (1987-04-07),

3. 4602130 - Dual voltage source feed circuit configuration for a telephone line (1986-07-22),

4. 4598173 - Interface circuit for a subscriber line circuit (1986-07-01),

5. 4456991 - Telephone line circuit and system (1984-06-26),

6. 4435803 - Analog subscriber/trunk module with shared ringing source and ring-trip (1984-03-06),

7. 4431868 - Solid state telephone line interface circuit with ringing capability (1984-02-14),

8. 4387273 - Subscriber line interface circuit with impedance synthesizer (1983-06-07),

9. 4349703 - Programmable ring signal generator (1982-09-14),

10. 4317963 - Subscriber line interface circuit utilizing impedance synthesizer and (1982-03-02),

11. 4315106 - Apparatus for regulating current supplied to a telephone line signal of (1982-02-09),

12. 4150368 - Signal coding for compressed pulse code modulation system (1979-04-17),

Title: The Innovative Contributions of Ramon C Chea, Jr.

Introduction

Ramon C Chea, Jr., based in Monroe, CT, is a remarkable inventor recognized for his significant contributions in the field of telecommunications. With a total of 12 patents to his name, his work has influenced the design and functionality of various technological devices, particularly in telephony applications.

Latest Patents

Among his latest innovations is the "Wide-band high voltage amplifier for telephone exchange subscriber line". This technology is especially beneficial in telephony, employing a flyback converter to optimize power and performance. The amplifier operates efficiently by coupling a capacitor storage element directly across the subscriber line, which is designed with a specific load impedance. By utilizing a differential amplifier to monitor these subscriber lines, he has developed an intricate error signal system that enhances call quality and performance.

Another noteworthy patent is the "Programmable ring signal generator", which features a digitally controlled mechanism that allows for the generation of multiple ring signals. This invention incorporates a variety of a.c. signals layered over a d.c. bias voltage, making it adaptable for various telecommunications infrastructures.

Career Highlights

Ramon's career has seen him work with prominent companies including the International Telephone and Telegraph Corporation and ITT Corporation, where he honed his skills and knowledge in the telecommunications sector. His innovative approach and technical expertise contributed to noteworthy projects and developments within these organizations.

Collaborations

Throughout his career, Ramon has collaborated with esteemed colleagues such as Santanu Das and Daniel M Bolus. These partnerships have allowed him to leverage diverse ideas and expertise, further enhancing his inventive prowess and leading to groundbreaking technological advancements.

Conclusion

Ramon C Chea, Jr. stands out as an influential inventor in the realm of telecommunications. His patents reflect a commitment to enhancing technology, improving efficiency, and fostering innovation in communication systems. With each invention, he continues to pave the way for advancements that shape the future of connectivity.

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