Company Filing History:
11 out of 11 
1 out of 5 
1 out of 1 Years Active: 1994-2020
Title: The Innovative Contributions of Yoichiro Sumitani
Introduction
Yoichiro Sumitani is a notable inventor based in Rancho Palos Verdes, California. He has made significant contributions to the field of audio technology, particularly in speaker design. With a total of 14 patents to his name, Sumitani has demonstrated a commitment to innovation and excellence in his work.
Latest Patents
One of Sumitani's latest patents is for a shallow subwoofer, which is a shallow speaker designed with a unique method of manufacture. This method employs two different alignment jigs at two distinct stages of assembly to ensure precise alignment of the speaker components. During the manufacturing process, a subassembly of components is created within the speaker frame and is subsequently removed along with the first alignment jig. A second alignment jig is then introduced into the speaker, allowing for the addition of the bobbin and voice coil. The subassembly is then connected to the frame, and the voice coil is linked to the external connection terminal. Finally, the cone and dust cap are installed, completing the assembly of the shallow subwoofer.
Career Highlights
Throughout his career, Sumitani has worked with several companies, including Sound Sources Technology Inc. and Culver Electronic Sales, Inc. His experience in these organizations has contributed to his expertise in audio technology and speaker design.
Collaborations
Sumitani has collaborated with various professionals in his field, including Chun-Yi Lin and Lin Chun-Yi. These collaborations have likely enriched his work and led to further advancements in his inventions.
Conclusion
Yoichiro Sumitani's innovative spirit and dedication to improving audio technology are evident in his numerous patents and career achievements. His work continues to influence the industry and inspire future inventors.