This inventor holds 13 USPTO granted patents and 1 published patent application and 8 EPO patents, primarily in Tire Manufacturing. Top assignees: Sumitomo Rubber Industries Limited, The Goodyear & Tire Rubber Company. Active years: 1993-2022.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Osaka, JP (1993 - 2008)
- Kobe, JP (2014 - 2022)
Company Filing History:
12 out of 4,554 
1 out of 7,061 
Years Active: 1993-2022
Areas of Expertise:
Title: Kei Kohara: Innovator in Rubber Technology
Introduction
Kei Kohara is a prominent inventor based in Kobe, Japan, known for his significant contributions to rubber technology. With a total of 13 patents to his name, he has made remarkable advancements in the field of pneumatic tires and rubber compositions.
Latest Patents
Kohara's latest patents include a rubber composition for inner liners and pneumatic tires. This invention provides an inner liner rubber composition that boasts an excellent balance of sheet processability and air retention properties. The composition includes a rubber component, a mixture of a fatty acid metal salt and a fatty acid amide, an oil, and a C5 petroleum resin. The rubber component consists of at least 70% by mass of a butyl-based rubber. The mixture is present in an amount of 0.8 to 3.2 parts by mass per 100 parts by mass of the rubber component, while the combined amount of the mixture, oil, and C5 petroleum resin ranges from 6.0 to 16.0 parts by mass per 100 parts by mass of the rubber component.
Another notable patent involves a pneumatic tire with a carcass ply comprising a plurality of partly overlapping strip-shaped ply pieces. This design features a carcass that extends between bead portions via sidewall portions and a tread portion. The carcass ply consists of strip-shaped ply pieces that are longer in the tire radial direction than in the tire circumferential direction, arranged circumferentially. Each ply piece contains a plurality of carcass cords arranged in parallel, with at least some overlapping each other.
Career Highlights
Throughout his career, Kei Kohara has worked with esteemed companies such as Sumitomo Rubber Industries Limited and The Goodyear Tire & Rubber Company. His experience in these organizations has allowed him to refine his expertise in rubber technology and tire design.
Collaborations
Kohara has collaborated with notable coworkers, including Nobumitsu Iio and Takeshi Imakita. Their combined efforts have contributed to the innovative advancements in the rubber industry.
Conclusion
Kei Kohara's work in rubber technology and pneumatic tire design has significantly impacted the industry. His innovative patents and collaborations highlight his dedication to advancing this field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile