Hiroo Katayama

Title: Hiroo Katayama: Inventor in Water-Repellent Materials

Introduction

Hiroo Katayama is an inventor associated with Machida, Japan, and Mitsubishi Chemical Industries Limited. His patent work includes processes and compositions for making calcium silicate products water-repellent. The available information lists 2 patents.

Latest Patents

Katayama’s listed patents focus on water repellency and calcium silicate materials.

“Process for Preparing a Water Repellent Calcium Silicate Shaped Product” describes dispersing siliceous and calcareous sources in water, adding a water-repellent composition, and heating the mixture to form a slurry containing calcium silicate hydrate. The slurry is then press-filter molded and dried, either directly or after steam curing.

“Water Repellent Composition” concerns a room-temperature liquid composition containing silicone oil and a substantially non-volatile paraffinic oil or low-molecular-weight resin. The patent specifies that the separation index of the paraffinic oil or resin to the silicone oil is at most 0.4.

Career Highlights

Katayama’s listed inventions address both the preparation of shaped calcium silicate products and the formulation of water-repellent compositions. These technologies reflect an applied materials focus, combining processing methods with composition design. He is associated with Mitsubishi Chemical Industries Limited.

Collaborations

Katsuhiko Kuroda and Toru Tagawa are identified as Katayama’s coworkers. The available information does not specify their roles in the listed patents or describe particular joint projects.

Conclusion

Hiroo Katayama’s listed patent work centers on water-repellent compositions and calcium silicate products, highlighting his contributions to materials processing and formulation.