Company Filing History:
1 out of 12 
1 out of 2 Years Active: 1998-1999
Title: Innovations by Itsuku Ohtawa
Introduction
Itsuku Ohtawa is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of packaging and cushioning materials. With a total of 2 patents, his work focuses on innovative solutions that enhance product protection during transportation.
Latest Patents
Ohtawa's latest patents include a shock absorber and a package with shock absorbers. The shock absorber consists of sheets of laminated paper that are stacked and made into air-tight flat bags with air inlets. After air is supplied into the bags, the air inlets are air-tightly closed to form shock absorbers encapsulating the air. The laminated paper is created by stacking a water-soluble polyvinyl alcoholic layer on a paper base, achieving a total thickness of 90 µm or less and a gas permeability of 800 thousand seconds per 100 ml or more. The air is introduced into the flat bags to 50 to 80% of maximum inflation to ensure their shock-absorbing function. Additionally, the package is designed to hold an appropriate number of discrete shock absorbers or a continuous series of them, ensuring adequate contact area to support a maximum static load of 0.07 kgf/cm².
Another patent involves manufacturing equipment for cushioning material. This equipment automatically produces cushioning material by filling air inside polyvinyl alcohol laminated paper and sealing it into individual bags. The manufacturing process includes a material roll, feeding rollers, and a bag forming device that creates a tubular shape. Air is then filled inside the tubular sheet material, which is subsequently sealed and cut into individual bags.
Career Highlights
Ohtawa has worked with prominent companies such as Hitachi Electronics Services Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative packaging solutions.
Collaborations
Some of his notable coworkers include Jiro Takahashi and Tsuyoshi Mizutani. Their collaboration has likely fostered a creative environment that encourages innovation.
Conclusion
Itsuku Ohtawa's contributions to the field of packaging and cushioning materials demonstrate his commitment to innovation. His patents reflect a deep understanding of material science and engineering, paving the way for advancements in product protection.