Company Filing History:
7 out of 42,485 
2 out of 2,028 
2 out of 248 
Years Active: 2003-2025
Title: The Innovations of Keiji Kawahara
Introduction
Keiji Kawahara is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the field of electric motor technology, holding a total of 10 patents. His work focuses on improving the efficiency and manufacturing processes of electric motors.
Latest Patents
One of his latest patents is for a stator of an electric motor and its manufacturing method. The objective of this invention is to suppress variations in the angle of a shoulder part of a segment coil, thereby enhancing the ease of inserting segment coils into a stator core. The stator includes a core with multiple slots and U-shaped segment coils inserted into these slots. Each segment coil features a shoulder part that is bent to form the U shape, with press marks formed on both the front and back surfaces of the shoulder parts. Another notable patent involves a welded construction and resistance welding method. This invention describes a first metallic member with a projecting portion and a corresponding depressed portion on a second metallic member. The two members are welded together at a summit portion of the projecting portion, with a recessed portion formed on at least one of the metallic members.
Career Highlights
Throughout his career, Keiji Kawahara has worked with notable companies such as Hitachi, Ltd. and Hitachi Automotive Systems, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in electric motor technology.
Collaborations
Keiji has collaborated with several talented individuals, including Atsushi Koshizaka and Mizuho Yokoyama. These collaborations have contributed to the advancement of his inventions and the successful implementation of his patents.
Conclusion
Keiji Kawahara's contributions to electric motor technology through his patents and collaborations highlight his innovative spirit and dedication to improving manufacturing processes. His work continues to influence the industry and pave the way for future advancements.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.