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For the Inventor, By the Inventor

Kuga-gun, Japan

Hitoshi Mantoku

USPTO Granted Patents = 14

Average Co-Inventor Count = 2.9

ph-index = 10

Forward Citations = 319(Granted Patents)


Location History:

  • Iwakuni, JP (1985 - 1990)
  • Yamaguchi, JP (1997)
  • Kuga-gun, JP (1997 - 1999)
  • Yamaguchi-ken, JP (1999)
  • Waki-cho, JP (1997 - 2000)

Company Filing History:

goldMedal10 out of 1,008 
 
Mitsui Petrochemical Industries, Ltd.
 patents
silverMedal4 out of 1,786 
 
Mitsui Chemicals, Inc.
 patents

Years Active: 1985-2000

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14 patents (USPTO):Explore Patents
1. 6048607 - Porous film of high molecular weight polyolefin and process for (2000-04-11),
2. 5968994 - High strength porous film of polypropylene and process for producing same (1999-10-19),
3. 5948519 - Porous biaxially-oriented film comprising high molecular (1999-09-07),
4. 5882518 - Microporous film of high molecular weight polyolefin and process for (1999-03-16),
5. 5840235 - Biaxially oriented film of high molecular weight polyethylene, process (1998-11-24),
6. 5674919 - Biaxially oriented film of high molecular weight polyethylene, process (1997-10-07),
7. 5650451 - Biaxially oriented film of high molecular weight polyethylene, process (1997-07-22),
8. 5624627 - Process for preparing surface-modified biaxially oriented film of high (1997-04-29),
9. 4902460 - Process for preparation of molecularly oriented, silane-crosslinked (1990-02-20),
10. 4894281 - Fiber-reinforced polymer molded body (1990-01-16),
11. 4870136 - Molecular oriented, silane-crosslinked ultra-high-molecular-weight (1989-09-26),
12. 4616059 - Graft-modified ultrahigh-molecular-weight polyethylene and process for (1986-10-07),
13. 4612148 - Process for producing stretched articles of ultrahigh-molecular-weight (1986-09-16),
14. 4545950 - Process for producing stretched articles of ultrahigh-molecular-weight (1985-10-08),

Title: Hitoshi Mantoku: Innovator in High Molecular Weight Polyolefin Films

Introduction

Hitoshi Mantoku is a notable inventor based in Kuga-gun, Japan. He has made significant contributions to the field of materials science, particularly in the development of porous films made from high molecular weight polyolefins. With a total of 14 patents to his name, Mantoku's work has had a considerable impact on various industries.

Latest Patents

Among his latest patents, Mantoku has developed a porous film of high molecular weight polyolefin. This invention relates to a film that exhibits excellent strength and air-permeability, making it suitable for applications such as filtering materials, separators for aqueous electrolyte batteries, and moisture-permeable waterproof uses like paper diapers. The film is characterized by its composition of fibrils comprising extended-chain crystals and lamellar crystals, which enhances its performance. Another significant patent involves a high-strength porous film of polypropylene, produced through a thermal treatment process that ensures the film remains air-impermeable while becoming porous.

Career Highlights

Throughout his career, Hitoshi Mantoku has worked with prominent companies such as Mitsui Petrochemical Industries, Ltd. and Mitsui Chemicals, Inc. His experience in these organizations has allowed him to refine his expertise in polymer science and film technology.

Collaborations

Mantoku has collaborated with notable colleagues, including Kazuo Yagi and Akinao Hashimoto. These partnerships have contributed to the advancement of innovative solutions in the field of high molecular weight polyolefins.

Conclusion

Hitoshi Mantoku's contributions to the development of porous films from high molecular weight polyolefins highlight his role as a leading inventor in materials science. His patents reflect a commitment to innovation and practical applications that benefit various industries.

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