Location History:
- Yumino-machi, Sendai-shi, Miyagi-ken, JP (1986)
- Sendai-shi, Miyagi-ken, JP (1986)
- Sendai, JP (1985 - 1987)
Company Filing History:
2 out of 3 
2 out of 10,240 
1 out of 3 Years Active: 1985-1987
Title: Junjiro Takekawa: Innovator in Rocket Combustion Technology
Introduction
Junjiro Takekawa is a prominent inventor based in Sendai, Japan. He has made significant contributions to the field of rocket combustion technology, holding a total of 4 patents. His innovative approaches have advanced the efficiency and effectiveness of rocket engines.
Latest Patents
Takekawa's latest patents include a rocket combustion chamber cooling wall of composite cooling type. This invention features a cooling wall in a regenerative cooling rocket combustion chamber, where the throat portion, which experiences the highest heat load, is constructed from a porous material that provides a perspiring cooling action. The remaining areas, which endure relatively lower heat loads, are cooled using conventional forced convection methods. This composite cooling system achieves a high cooling effect while minimizing pressure loss in the cooling passages, resulting in a lightweight design and extended engine life. Another notable patent is a method of producing rocket combustors. This method involves forming an outer cylinder using a powder metallurgical technique on a cylinder that has a cooling wall with multiple grooves. A low-melting alloy is utilized as a filler for these grooves, and it is also possible to create the outer cylinder after applying a copper plating shell on the inner cylinder filled with the low-melting alloy.
Career Highlights
Throughout his career, Junjiro Takekawa has worked with the National Aerospace Laboratories of the Science & Technology Agency. His work has been instrumental in developing advanced technologies for rocket propulsion systems.
Collaborations
Takekawa has collaborated with notable individuals in his field, including Masayuki Niino and Akio Suzuki. Their combined expertise has contributed to the success of various projects and innovations.
Conclusion
Junjiro Takekawa's contributions to rocket combustion technology exemplify his innovative spirit and dedication to advancing aerospace engineering. His patents reflect a commitment to improving the performance and reliability of rocket engines, making him a significant figure in the field.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.