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For the Inventor, By the Inventor

Ibaraki, Japan

Heihatiro Midorikawa

USPTO Granted Patents = 13

Average Co-Inventor Count = 4.7

ph-index = 5

Forward Citations = 75(Granted Patents)


Location History:

  • Hitachi, JP (1982 - 1998)
  • Ibaraki, JP (1999 - 2007)

Company Filing History:

goldMedal13 out of 42,496 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 342 
 
Nisshin Steel Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1982-2007

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13 patents (USPTO):Explore Patents
1. 7165418 - Absorption refrigerator and production method thereof (2007-01-23),
2. 6813901 - Absorption refrigerator and production method thereof (2004-11-09),
3. 6279342 - Absorption refrigerator and production method thereof (2001-08-28),
4. 5964103 - Absorption refrigerator and production method thereof (1999-10-12),
5. 5806337 - Absorption refrigerator and production method thereof (1998-09-15),
6. 4994157 - Method and apparatus for descaling stainless steel (1991-02-19),
7. 4912934 - Hermetically closed circulation type, vapor absorption refrigerator (1990-04-03),
8. 4857222 - Absorption type refrigerator and absorbing solution therefor (1989-08-15),
9. 4505760 - Process for partial hot dipping of steel strips (1985-03-19),
10. 4487036 - Hermetically circulating, absorption type refrigerator (1984-12-11),
11. 4470272 - Hermetically circulating, absorption type refrigerator (1984-09-11),
12. 4398399 - Hermetically circulating, absorption type refrigerator (1983-08-16),
13. 4311024 - Hermetically circulating, absorption type refrigerator (1982-01-19),

Title: The Innovative Contributions of Heihatiro Midorikawa

Introduction

Heihatiro Midorikawa, an esteemed inventor based in Ibaraki, Japan, has made significant contributions to the field of refrigeration technology with his groundbreaking patents. With a total of 13 patents to his name, Midorikawa has established himself as a notable figure in innovation.

Latest Patents

Among his most recent inventions is an absorption refrigerator and its production method. This innovative refrigerator features a high-temperature regenerator designed to heat a water solution containing halogen compounds to generate steam. Notably, an oxide film with a thickness ranging from 0.02 to 5.0 micrometers, exhibiting colors such as blue, purple, or gray, or containing a hydroxyl group is formed on the surface of at least one of the high-temperature regenerators and the heat exchanger. This inventive approach enhances the efficiency and performance of the refrigerator.

Career Highlights

Heihatiro Midorikawa's professional journey includes significant tenures at renowned companies such as Hitachi, Ltd. and Nisshin Steel Co., Ltd. His work at these institutions has allowed him to harness his innovative spirit and develop technology that has practical applications in everyday life.

Collaborations

Throughout his career, Midorikawa has collaborated with talented individuals in the field, including Masahiko Itoh and Michihiko Aizawa. These collaborations have fostered a dynamic environment for innovation, enabling the development of advanced technologies in refrigeration.

Conclusion

Heihatiro Midorikawa's contributions to the field of refrigeration exemplify the impact that innovative thinking can have on technology. With a solid foundation of patents and collaborations with esteemed colleagues, Midorikawa continues to inspire future generations of inventors. His work not only enhances technological efficiency but also aligns with sustainable practices in the refrigeration industry.

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