This inventor holds 2 USPTO granted patents. Top assignees: Nissan Chemical Industries Limited, Nissan Maruzen Polyethylene Company. Active years: 1985.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 1,235 
2 out of 2 Years Active: 1985
Title: Ryoji Nishijima and Blow-Molding Resin Innovation
Introduction
Ryoji Nishijima is an inventor associated with Ichihara, Japan. His patent work focuses on processes for producing high-density polyethylene resin suitable for blow molding. His listed portfolio includes 2 patents.
Latest Patents
Nishijima’s listed patents describe related approaches to pelletizing high-density polyethylene prepared using a highly active Ziegler catalyst.
- **Process for Producing a Blow Molding Resin.** This process pelletizes the polyethylene at a temperature of at least 230°C in the presence of air or oxygen, while aiming to preserve its average molecular weight and molecular-weight distribution.
- **Process for Producing a Blow Molding Resin.** This approach adds a small amount of cross-linking agent to the polyethylene and conducts pelletizing in an atmosphere containing a small amount of oxygen.
Career Highlights
Nishijima’s work is associated with Nissan Chemical Industries Limited and Nissan Maruzen Polyethylene Company. The patent descriptions emphasize controlling resin properties during pelletizing, an important step in preparing polyethylene for blow-molding applications.
Collaborations
His listed coworkers include Yoshiho Matsuo and Atsuhiko Yoshino.
Conclusion
Ryoji Nishijima’s patent record highlights process innovations for producing blow-molding resin, with particular attention to pelletizing conditions and the preservation or adjustment of polyethylene properties.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile