Masaoki Koyama

Follow

Person

Yokosuka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Thermoplastic polyurethane derived from polytetramethylene carbonat...
- Patent number 5,436,399
- Issue date Jul 25, 1995
- Asahi Kasel Kogyo Kabushiki Kaisha
- Masaoki Koyama
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...