Company Filing History:
6 out of 196 
1 out of 383 Years Active: 1997-2010
Title: Koichi Hirano: Innovator in Writing Instruments and Stamping Technology
Introduction
Koichi Hirano is a notable inventor based in Yokohama, Japan. He has made significant contributions to the fields of writing instruments and self-inking stamps. With a total of 7 patents to his name, Hirano's innovations have improved the functionality and reliability of everyday products.
Latest Patents
Hirano's latest patents include a novel design for a ball-point pen. This design features a cover member that is fitted to a joint member connecting a writing tip that rotatably supports a writing ball. The innovative aspect of this pen is that the cover member does not come within 0.2 mm of the writing tip, preventing damage during assembly. Another significant patent is for a process of producing a self-inking stamp. This process allows for repeated stamping by using a stamp material with a continuous porous structure, which is impregnated with multiple types of ink. The design includes an occlusion body that prevents the mingling of different inks, enhancing the functionality of the stamp.
Career Highlights
Throughout his career, Koichi Hirano has worked with prominent companies such as Mitsubishi Pencil Company, Limited. His experience in these organizations has allowed him to refine his skills and contribute to the development of innovative products.
Collaborations
Hirano has collaborated with notable coworkers, including Yoichi Ando and Hajime Toda. Their combined expertise has likely played a role in the successful development of his patented inventions.
Conclusion
Koichi Hirano's contributions to the fields of writing instruments and self-inking stamps demonstrate his innovative spirit and dedication to improving everyday products. His patents reflect a commitment to quality and functionality that benefits users worldwide.