Masahiro Iwata

This inventor holds 6 USPTO granted patents and 1 published patent application. Top assignees: Pioneer Corporation, Pentel Kabushiki Kaisha. Active years: 1981-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiro Iwata. Retrieved from https://idiyas.com/inventor/masahiro-iwata-8mbhzn74

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 6 (Patent Applications = 1)

% Patents Active = 100.0

Average Co-Inventor Count = 3.5

ph-index = 2

Forward Citations = 100(Granted Patents)

Location History:

Saitama, JP (1981)
Koshigaya, JP (1985)

Company Filing History:

Pentel Kabushiki Kaisha

patents

Years Active: 1981-2026

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12601606 - Audio output device, audio output method, program and storage medium (2026-04-14),

2. 12590809 - Information providing device, information providing method, and information providing program (2026-03-31),

3. 12504294 - Information providing device, information providing method, and information providing program for acquiring guidance location information indicating distance between position of recipient and position of guidance location (2025-12-23),

4. 12345539 - Information processing device, information output method, program, and storage medium (2025-07-01),

5. 4557618 - Ink and eraser of the ink (1985-12-10),

6. 4268411 - Microcapsules having a wall of inorganic substance and process for the (1981-05-19),

Title: Masahiro Iwata: Innovator in Ink and Microcapsule Technology

Introduction

Masahiro Iwata is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of ink technology and microencapsulation. With a total of 6 patents to his name, Iwata's work showcases his innovative spirit and dedication to advancing technology.

Latest Patents

Iwata's latest patents include a unique colored ink formulation and a process for creating microcapsules. The colored ink comprises a developer with a phenolic hydroxyl group and an electron-donating colorless dye that develops color through the action of the developer. This ink can be erased using a specially designed eraser containing a desensitizing compound that renders the dye colorless. Additionally, his microcapsule patent details a process for preparing microcapsules with a core of highly viscous liquid encapsulated by a wall of finely divided silica powder. This innovative structure enhances the functionality of the microcapsules.

Career Highlights

Iwata is currently employed at Pentel Kabushiki Kaisha, a company known for its high-quality writing instruments and stationery products. His work at Pentel has allowed him to explore and develop new technologies that improve the usability and performance of writing materials.

Collaborations

Iwata has collaborated with talented coworkers such as Yuichi Taka and Yushi Miyashita. Their combined expertise has contributed to the successful development of innovative products in the field of ink and microencapsulation.

Conclusion

Masahiro Iwata's contributions to ink technology and microcapsule development highlight his role as a leading inventor in his field. His innovative patents and collaborative efforts continue to influence advancements in writing materials and encapsulation techniques.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

1 patent pending: