This inventor holds 2 USPTO granted patents, plus 1 CIPO patent. Top assignees: Ohkura Electric Co., Ltd., Other. Active years: 1992.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 20 
1 out of 834,601 Years Active: 1992
Title: Chitoshi Yamada: Innovator in Temperature Control and AC Power Measurement
Introduction
Chitoshi Yamada is a notable inventor based in Tokyo, Japan. He has made significant contributions to the fields of temperature control and AC power measurement. With a total of 2 patents, Yamada's work reflects his innovative approach to solving complex engineering challenges.
Latest Patents
Yamada's latest patents include a "Furnace temperature control apparatus using adjustment input." This invention is a learning-type temperature control apparatus designed for furnaces that operate with a specific temperature change pattern over time. The apparatus utilizes a dual system model to manage the furnace and its controller. By calculating an adjustment input based on the error between preset temperature values and actual inside temperatures, the system ensures that the furnace maintains the desired temperature profile.
Another significant patent is the "Method and apparatus for measuring AC power." This invention involves decomposing measured digital values of AC voltage and current into components with a 90-degree phase difference. By calculating the scalar product of these components, the apparatus effectively measures the active power carried by the AC current at the AC voltage. Additionally, it can calculate the absolute value of the vector product, representing the reactive power.
Career Highlights
Throughout his career, Chitoshi Yamada has worked with various companies, including Ohkura Electric Co., Ltd. His experience in the industry has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.
Collaborations
Yamada has collaborated with notable coworkers such as Katsuhisa Furuta and Iwao Ashahi. These partnerships have likely fostered a creative environment that encourages the exchange of ideas and expertise.
Conclusion
Chitoshi Yamada's contributions to temperature control and AC power measurement demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to advancing technology in meaningful ways.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile