This inventor holds 1 USPTO granted patent. Top assignees: Kabushiki Kaisha Pilot Corporation, The Pilot Ink Co., Ltd.. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 181 
1 out of 175 Years Active: 2026
Title: Tomoya Ikai and His Ink-Retention Invention.
Introduction
Tomoya Ikai is an inventor associated with Tokyo, Japan. His patent work includes a writing implement design focused on managing ink flow and retention.
Latest Patents
Ikai is credited with 1 patent in the information provided. His patent, “Writing implement,” describes an ink-retention member with ink-retention grooves and ink-guiding grooves. The member has two radial horizontal holes that communicate with an inner hole and are positioned at different points along the ink-retention portion. The holes are arranged to connect with adjacent ink-retention grooves while remaining separate from the ink-guiding grooves in transverse cross-section. This configuration addresses the structure and routing of ink within the writing implement.
Career Highlights
Ikai is associated with Kabushiki Kaisha Pilot Corporation and The Pilot Ink Co., Ltd. The available information does not specify his roles or dates of employment at these companies.
Collaborations
Misako Mabuchi is identified as Ikai’s coworker. The information provided does not establish whether they collaborated on the patent.
Conclusion
Tomoya Ikai’s documented patent contribution concerns an ink-retention structure designed to guide and manage ink within a writing implement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile