This inventor holds 2 USPTO granted patents. Top assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha. Active years: 1999.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 5,207 
1 out of 39,078 
Years Active: 1999
Title: Masaji Hirano: Inventor of Automotive Sliding-Door Mechanisms
Introduction
Masaji Hirano is an inventor associated with Sagamihara, Japan. His patent work includes designs for sliding-door structures and vehicle door handles. He is credited with 2 patents.
Latest Patents
Hirano’s listed patents include “Sliding door structure,” which describes a guide rail designed to help a sliding door move upward as it opens or closes. The rail also includes an insertion hole to facilitate placing a roller inside it.
His other listed patent, “Outside handle of automobile sliding door,” concerns a handle mechanism for opening and closing a vehicle-body opening. It describes linked components, including an L-shaped bell crank, arranged as a four-point linkage to operate the sliding door.
Career Highlights
Hirano’s work is associated with Aisin Seiki Co., Ltd., and Toyota Motor Corporation. The patents reflect an emphasis on practical mechanisms for vehicle sliding doors, including door guidance and handle operation.
Collaborations
Hirano’s listed coworkers include Kunihiko Hisamoto and Masakatsu Tsubouchi.
Conclusion
Masaji Hirano’s patent record highlights contributions to automotive sliding-door technology through mechanisms for guiding doors and operating them with an exterior handle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile