K Nirmal Ratnakumar

Title: K Nirmal Ratnakumar: Innovator in Integrated Circuit Technology

Introduction

K Nirmal Ratnakumar is a prominent inventor based in San Jose, CA (US). He has made significant contributions to the field of integrated circuits, holding a total of 5 patents. His work focuses on enhancing the performance and reliability of semiconductor devices.

Latest Patents

One of his latest patents is titled "Buried layer substrate isolation in integrated circuits." This invention involves an integrated circuit structure that utilizes a buried layer with a conductivity type opposite to that of an overlying well region. This design is particularly beneficial for wells containing transistors that are prone to noise generation. The buried layer may include a first portion underlying the transistor and a second portion that laterally surrounds it. Additionally, the circuit may feature a doped annular region that contacts the buried layer and surrounds the transistor, enhancing its performance.

Another notable patent is "Bipolar transistor and method for making the same." This patent outlines a method for fabricating a bipolar transistor, which includes patterning an epitaxial layer to expose regions of semiconductor topography. The process involves depositing an intermediate layer and forming a conductive emitter structure above it. The method also includes etching dielectric layers in alignment with the transistor's base and emitter structures, ensuring precision in the fabrication process.

Career Highlights

K Nirmal Ratnakumar is currently employed at Cypress Semiconductor Corporation, where he continues to innovate in the semiconductor industry. His expertise in integrated circuit technology has positioned him as a valuable asset to his company.

Collaborations

He has collaborated with notable coworkers, including Frederick B Jenne and Gabriel M Li, contributing to advancements in semiconductor technology.

Conclusion

K Nirmal Ratnakumar's contributions to integrated circuit technology through his patents and work at Cypress Semiconductor Corporation highlight his role as a leading inventor in the field. His innovative approaches continue to shape the future of semiconductor devices.