Nobuhito Itoh

Title: **Innovative Contributions of Nobuhito Itoh in Resin Technology**

Introduction

Nobuhito Itoh, an accomplished inventor based in Hiki-gun, Japan, has made significant contributions to the field of resin technology. With two patents to his name, Itoh's innovative work focuses on photocurable and thermosetting resin compositions, enhancing applications in printed circuit boards.

Latest Patents

Nobuhito Itoh's latest patents showcase his focus on advancements in resin compositions. One patent presents a photocurable and thermosetting resin composition characterized by excellent surface curability and deep curability, which is capable of pattern formation using a laser beam with a wavelength of 350 to 410 nm. This invention is particularly useful as a solder resist for laser direct imaging. The composition includes a carboxylic resin, an oxime ester-based photopolymerization initiator, and specific sulfur compounds to enhance the properties of the resin.

Another notable patent involves an alkali development-type solder resist, which comprises a carboxyl group-containing photosensitive resin produced through a series of complex reactions involving cyclic ethers and unsaturated monocarboxylic acids. This innovation also incorporates an oxime ester-based photopolymerization initiator, a compound with multiple ethylenic unsaturated groups, and a thermosetting component, ensuring that the dry film has optimal absorbance for effective application in electronic devices.

Career Highlights

Itoh's inventive journey has been marked by his role at Taiyo Ink Mfg. Co., Ltd., where he has leveraged his expertise to revolutionize resin formulations. His innovative contributions not only advance the company’s product line but also influence the broader field of material science.

Collaborations

Throughout his career, Nobuhito Itoh has collaborated with notable colleagues including Yoko Shibasaki and Kenji Kato. These partnerships have fostered a dynamic environment for innovation, allowing for the cross-pollination of ideas and expertise, which has led to the development of cutting-edge technologies within the field.

Conclusion

Nobuhito Itoh's contributions to resin technology through his inventive patents and collaboration with industry professionals highlight the importance of innovation in advancing materials used in modern electronics. His work exemplifies how dedicated inventors can drive progress and create valuable solutions for the industry.