Company Filing History:
3 out of 46 
2 out of 190 
1 out of 2 Years Active: 1986-1989
Title: Innovations of Hiroo Ohtsuka
Introduction
Hiroo Ohtsuka is a notable inventor based in Utsunomiya, Japan. He has made significant contributions to the field of electrical connectors, holding three patents that showcase his innovative designs and engineering skills.
Latest Patents
One of his latest patents is a miniature electrical connector. This invention features contacts designed to connect to lead wires, along with a housing that includes apertures for receiving these contacts. The lead wires are connected to the contacts when they are forced into the housing's apertures. Each contact has a contact element at one end for external terminal contact and a connection portion at the other end, which is formed with a lead aperture and a slit. The slit edges pierce the insulating coating of the lead wire, establishing a secure connection with the wire's core under pressure. The housing is designed with through-apertures for the contact elements and receiving apertures for the lead wires, ensuring a reliable connection.
Another significant patent is for a contact for a connector. This design includes two opposed contact elements that receive a male contact from a mating connector. Each contact element features one or more protrusions on its surface to embrace the male contact securely. The protrusions overlap before the male contact is inserted, ensuring that even thin male contacts are securely pressed without torsional forces affecting the connection.
Career Highlights
Hiroo Ohtsuka has worked with prominent companies such as Daiichi Denshi Kogyo Kabushiki Kaisha and Iwatsu Electric Company Ltd. His experience in these organizations has contributed to his expertise in developing innovative electrical connector solutions.
Collaborations
Throughout his career, Ohtsuka has collaborated with talented individuals, including Osamu Hara and Tomonari Ohtsuki. These collaborations have likely enriched his work and led to further advancements in his inventions.
Conclusion
Hiroo Ohtsuka's contributions to the field of electrical connectors demonstrate his innovative spirit and engineering prowess. His patents reflect a commitment to enhancing connectivity solutions in technology.