This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignee: Hitachi-Ge Nuclear Energy, Ltd.. Active years: 2021-2023.
Company Filing History:
Years Active: 2021-2023
Title: Innovations by Junichiro Naganuma in Ultrasonic Inspection Technology
Introduction
Junichiro Naganuma is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of ultrasonic inspection technology, holding a total of 3 patents. His work focuses on enhancing the methods and apparatus used for ultrasonic inspections and flaw detections.
Latest Patents
Naganuma's latest patents include an ultrasonic inspection method and an ultrasonic inspection apparatus. The ultrasonic inspection method involves outputting a pulse signal to an ultrasonic sensor to generate and transmit ultrasonic waves. These waves, reflected or scattered by an object, are received and converted into a waveform signal by the ultrasonic sensor. The waveform signal is then digitized to acquire waveform data. This process includes executing modulation processing to modulate multiple waveform data acquired under the same inspection conditions and generating composite waveform data. Additionally, demodulation processing is executed to generate compressed waveform data.
Another significant patent is the ultrasonic flaw detection method and apparatus. This invention identifies echoes appearing in flaw detection images by selecting and controlling combinations of transmitting and receiving elements. Multiple waveform signals are recorded, and for each position in an inspection object, the intensities of these signals are extracted based on the propagation time of ultrasonic waves. A flaw detection image is generated, showing the distribution of totalized intensities. By using at least three sound velocities for calculating the propagation time, multiple flaw detection images are created, allowing for the identification of the smallest echo area.
Career Highlights
Junichiro Naganuma is currently employed at Hitachi-GE Nuclear Energy, Ltd., where he continues to innovate in the field of ultrasonic technology. His work has been instrumental in advancing the capabilities of ultrasonic inspections, making them more efficient and reliable.
Collaborations
Naganuma has collaborated with notable colleagues such as Sou Kitazawa and Kazuya Ehara. Their combined expertise has contributed to the development of advanced ultrasonic technologies.
Conclusion
Junichiro Naganuma's contributions to ultrasonic inspection technology demonstrate his commitment to innovation and excellence in his field. His patents reflect a deep understanding of ultrasonic methods, which have the potential to significantly improve inspection processes.