Location History:
- Fujisawa, JP (1983 - 1988)
- Yokohama, JP (1990)
Company Filing History:
2 out of 3 
1 out of 1,233 
1 out of 412 
Years Active: 1983-1990
Title: Hiroyuki Tohda: Innovator in Photoresist Solutions
Introduction
Hiroyuki Tohda is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of photoresist solutions, holding a total of 4 patents. His work has been instrumental in enhancing the manufacturing processes of electronic components.
Latest Patents
One of Tohda's latest patents is a remover solution for photoresist. This solution comprises a solvent, typically water, an inorganic or organic alkaline compound such as sodium and potassium hydroxides, and a borohydride compound like sodium and lithium borohydrides. This innovative method effectively removes patterned photoresist layers during the manufacturing of electronic circuit board substrates. It yields satisfactory results without discoloration or denaturation of the copper and solder surfaces, leading to the production of high-quality products. Another significant patent involves a photopolymerizable composition that includes benzotriazole carboxylic acid, showcasing his expertise in chemical formulations.
Career Highlights
Throughout his career, Hiroyuki Tohda has worked with prominent companies in the industry, including Photopoly Ohka Co., Ltd. and Tokyo Ohka Kogyo Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative solutions.
Collaborations
Tohda has collaborated with notable coworkers such as Hisashi Nakane and Toshimi Aoyama. Their combined expertise has contributed to the advancement of photoresist technologies.
Conclusion
Hiroyuki Tohda's contributions to the field of photoresist solutions have made a significant impact on the electronics manufacturing industry. His innovative patents and collaborations highlight his role as a leading inventor in this specialized area.
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.