Company Filing History:
Years Active: 1990
Title: Katsuji Ohshita: Innovator in Mechanical Pencil Design
Introduction: Katsuji Ohshita is a notable inventor based in Kure, Japan. He is recognized for his innovative contributions to the design of mechanical pencils. His work has led to advancements in the functionality and usability of writing instruments.
Latest Patents: Katsuji Ohshita holds a patent for a mechanical pencil with a plastic chuck. This design features a chuck made of plastics, which includes a lead case connected to the chuck, a ring that surrounds and holds the chuck, and a spring that biases the chuck toward a position where it engages with the ring. The plastic chuck consists of a cylindrical tube connected to the lead case and three elastically deformable extensions. Each extension has an engaging portion for grasping a lead and a connecting portion that forms a curve of secondary degree, allowing for uniform grasping force around the lead.
Career Highlights: Katsuji Ohshita is associated with The Sailor Pen Co., Ltd., a company known for its high-quality writing instruments. His work at the company has contributed to the development of innovative products that enhance the writing experience.
Conclusion: Katsuji Ohshita's contributions to mechanical pencil design exemplify the spirit of innovation in the writing instrument industry. His patent reflects a thoughtful approach to enhancing usability and functionality in everyday tools.