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Polymer Processing Research Inst., Ltd.

USPTO Granted Patents = 14

Forward Citations = 290

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23 inventors (with patents filed for the assignee):

Kazuhiko Kurihara (12 out of 45 patents)

Hiroshi Yazawa (12 out of 34 patents)

Yoichi Mazawa (5 out of 8 patents)

4. Shuichi Murakami (4 out of 124 patents)

5. Jun Yamada (4 out of 69 patents)

6. Kintaro Aihara (4 out of 15 patents)

7. Toshikazu Ohishi (4 out of 7 patents)

8. Yuki Kuroiwa (3 out of 12 patents)

9. Toshikazu Oishi (3 out of 4 patents)

10. Sadayuki Ishiyama (3 out of 6 patents)

11. Yukio Matsumura (2 out of 2 patents)

12. Tadashi Honda (2 out of 6 patents)

13. Kazuhiro Yabe (1 out of 3 patents)

14. Shinji Yamazaki (1 out of 4 patents)

15. Shin'ichi Umejima (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 6132661 - Longitudinally stretched nonwoven fabric and method for producing the (2000-10-17),

2. 6063492 - Adhesive tape and its base fabric (2000-05-16),

3. 6054086 - Process of making high-strength yarns (2000-04-25),

4. 6051175 - Process for producing filament and filament assembly composed of (2000-04-18),

5. 6048808 - Nonwoven fabric and method of making the same (2000-04-11),

6. 5840633 - Nonwoven fabric and method of making the same (1998-11-24),

7. 5826314 - Device for transversely stretching web (1998-10-27),

8. 5789328 - Bulky nonwoven fabric and method for producing the same (1998-08-04),

9. 5312500 - Non-woven fabric and method and apparatus for making the same (1994-05-17),

10. 5307609 - Apparatus for wrapping and method therefor (1994-05-03),

11. 5290377 - Method for producing reticular nonwoven fabric (1994-03-01),

12. 5287742 - Device for detecting defects of web (1994-02-22),

13. 5265506 - Method for fabricating a perforated film and its apparatus (1993-11-30),

14. 5240160 - Rotary splitting tool to fabricate a fibrillated web (1993-08-31),

Polymer Processing Research Institute, Ltd. is a leading research and development company specializing in polymer processing technologies. Our team of experts work on innovative solutions for the plastics industry, focusing on extrusion, compounding, and recycling. With state-of-the-art facilities and cutting-edge research, we provide customized solutions for our clients to improve their production processes and product quality.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

14 Patents

#1,595 in Tokyo

#3,572 in Japan

#42,135 in the World

Polymer Processing Research Inst., Ltd.

Forward Citations = 290

23 inventors:

Kazuhiko Kurihara (12 out of 45 patents)

Hiroshi Yazawa (12 out of 34 patents)

Yoichi Mazawa (5 out of 8 patents)

4. Shuichi Murakami (4 out of 124 patents)

5. Jun Yamada (4 out of 69 patents)

Please report any incorrect information to [email protected]

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