Hamid Saghatchi is a notable inventor based in Orange, California, recognized for his significant contributions to the field of mass flow measurement technology. With a total of six patents to his name, Saghatchi has developed innovative solutions that enhance the efficiency and accuracy of gas flow measurement, particularly in semiconductor fabrication processes.

Latest Patents

One of Saghatchi's latest patents is a mass flow measuring assembly that features a low pressure drop and fast response time. This assembly is designed for measuring the mass flow and flow rate of gases used in semiconductor fabrication. It includes an axial flow passage, specifically a capillary tube with a diameter of approximately 0.050 inches and a wall thickness of about 0.002 inches. The downstream end connects to a diffuser section with an axially symmetric, diverging passage, allowing for low pressure drop due to controlled gas expansion. Additionally, the assembly incorporates two resistance thermometers made of iron-nickel alloy wire, providing differential temperature measurements with a rapid time constant of less than four seconds. This technology is particularly effective when integrated into a mass flow controller for arsine gas, maintaining a flow rate of 5 sccm even at low residual gas pressures.

Another significant patent is the mass flowmeter featuring a non-adjustable flow splitter. This device includes a housing with a longitudinally extending bore that houses a flow splitter. The flow splitter has a tapered portion that aligns with the bore's taper, creating a self-holding retention section that securely retains the flow splitter. This innovative design enhances the reliability and accuracy of the mass flowmeter.

Career Highlights

Throughout his career, Hamid Saghatchi has worked with several companies, including DXL USA Inc. and DXL International, Inc. His experience in these organizations has contributed to his expertise in flow measurement technologies and has allowed him to develop groundbreaking inventions.

Collaborations

Saghatchi has collaborated with notable professionals in his field, including Charles F. Drexel and Daniel Thomas Mudd. These collaborations have further enriched his work and have led to advancements in mass flow measurement technology.

Conclusion

Hamid Saghatchi's innovative patents and contributions to the field of mass flow measurement demonstrate his commitment to advancing technology in semiconductor fabrication processes. His work continues to influence the industry and

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