Location History:
- Takatsuki, JP (1993)
- Osaka, JP (1991 - 1998)
Company Filing History:
3 out of 27,375 
1 out of 655 
Years Active: 1991-1998
Title: The Innovations of Hidehito Kawahara
Introduction
Hidehito Kawahara is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of lighting and laser technology. With a total of 4 patents to his name, Kawahara's work reflects a commitment to innovation and efficiency.
Latest Patents
One of his latest inventions is a circular fluorescent lamp. This invention provides a compact, efficient, and well-designed circular fluorescent lamp with high output power. The circular fluorescent lamp has less non-luminant region and good characteristics of luminous intensity distribution, maintaining a high level of lamp lumen output. The design features circular arc tubes disposed concentrically on the same plane, with electrodes attached to the tube-end parts on one side. The other tube-end parts of the non-electrode side are sealed, and the tubes are joined near the non-electrode side with a bridge-jointed portion, forming a discharge path between the electrodes inside the arc tubes. The dimensions of the circular arc tubes are precisely engineered, with an outer diameter of 14 mm and an outer circular arc tube diameter of 150 mm.
Another significant patent is for a discharge excitation gas laser device. This device, such as an excimer laser, is equipped with laser medium gas and a pair of electrodes opposite each other in a gas-tight vessel. The laser medium gas is discharge-excited while inverting the polarity of a DC pulse voltage applied to the electrodes for every pulse. This innovation allows for a uniform distribution of atoms and ions in the discharge region, ensuring stability in DC pulse discharge without increasing the flow speed of the laser medium gas.
Career Highlights
Kawahara has worked with prominent companies, including Matsushita Electric Industrial Co., Ltd. and Matsushita Electronics Corporation. His experience in these organizations has contributed to his expertise in developing advanced technologies.
Collaborations
Some of his notable coworkers include Yasuhiro Shimada and Tadaaki Miki. Their collaboration has likely fostered an environment of creativity and innovation.
Conclusion
Hidehito Kawahara's contributions to the fields of lighting and laser technology demonstrate his innovative spirit and dedication to improving efficiency. His patents reflect a deep understanding of engineering principles and a commitment to advancing technology.