This inventor holds 64 USPTO granted patents and 8 published patent applications and 12 EPO patents, primarily in Electric Storage Devices (CPC class 1186). Top assignees: Casio Keisanki Kabushiki Kaisha, Ricoh Company, Ltd., Fujifilm Corporation. Active years: 1976-2026.
Inventors with similar research interests:
Location History:
- Tokyo, JA (1976 - 1978)
- Hamuramachi, JP (1988)
- Minami-ashigara, JP (1998 - 2000)
- Fussa, JP (1999 - 2000)
- Ome, JP (2000)
- Oume, JP (2002 - 2007)
- Shinjuku-ku, JP (2012)
- Kasugai, JP (2021)
- Tokyo, JP (1978 - 2023)
Company Filing History:
13 out of 441 
13 out of 28,906 
11 out of 16,860 
Years Active: 1976-2026
Areas of Expertise:
Title: Kenji Kojima: Innovator in Refrigeration and Dental Gypsum Technologies
Introduction
Kenji Kojima, based in Tokyo, Japan, has established himself as a prolific inventor with a remarkable portfolio of 61 patents. His innovative contributions span various fields, particularly in refrigeration and dental materials. This article explores his latest patents, career highlights, and collaborations with fellow inventors.
Latest Patents
Kojima’s most recent inventions showcase his expertise in engineering and materials science. One notable patent is for a refrigeration cycle apparatus, which includes a refrigeration circuit that encompasses a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion valve. This invention utilizes trifluoroiodomethane as the refrigerant, ensuring efficiency and reliability in temperature control.
Additionally, Kojima has developed a dental gypsum powder that incorporates a hemihydrate gypsum and a water-reducing agent. This formulation is characterized by precise mass ratios and particle size distributions, enhancing the material's performance in dental applications.
Career Highlights
Throughout his career, Kenji Kojima has worked for esteemed companies such as Ricoh Company, Ltd., and Casio Keisanki Kabushiki Kaisha. His tenure at these organizations allowed him to refine his technical skills and contribute significantly to product innovations in their respective fields.
Collaborations
Kojima's work has been enriched by collaborations with notable coworkers, including Nobuo Ando and Kenzo Ariyama. These collaborations have fostered a creative environment, leading to the development of groundbreaking inventions that push the boundaries of technology.
Conclusion
Kenji Kojima's impressive array of 61 patents reflects his dedication to innovation and excellence. With a focus on advanced refrigeration technology and dental materials, he continues to make significant impacts in these industries. His collaborations and experience at leading companies further enhance his contributions, making him a prominent figure in the world of inventions.