Katsuhisa Nitta

This inventor holds 18 USPTO granted patents and 3 published patent applications and 7 EPO patents. Top assignees: Merck Patent Gmbh, Merck Patent Gesellschaft MIT Beschrankter Haftung, Merck Patent Gesellschaft MIT Beschraenkter Haftung. Active years: 1988-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhisa Nitta. Retrieved from https://idiyas.com/inventor/katsuhisa-nitta

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 18 (Patent Applications = 3)

% Patents Active = 88.9

EPO Patents = 7 (Patent Applications = 4)

Average Co-Inventor Count = 3.4

ph-index = 9

Forward Citations = 197(Granted Patents)

Location History:

Fukushimi, JP (1994)
Fukushima, JP (1988 - 1996)
Fukushima-ken, JP (2005 - 2021)
Iwaki, JP (1993 - 2024)

Company Filing History:

Merck Patent Gesellschaft MIT Beschrankter Haftung

patents

1 out of 100

Merck Patent Gesellschaft MIT Beschraenkter Haftung

patents

Years Active: 1988-2024

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11891542 - α-alumina flakes (2024-02-06),

2. 11891541 - Alpha-alumina flakes (2024-02-06),

3. 11180659 - Alpha-alumina flakes (2021-11-23),

4. 11142649 - α-alumina flakes (2021-10-12),

5. 10647861 - α-alumina flakes (2020-05-12),

6. 10457812 - α-alumina flakes (2019-10-29),

7. 7419538 - Highly anti-corrosive metal pigments (2008-09-02),

8. 7384664 - Positive-electrode active material for non-aqueous electrolyte secondary cell and process for preparing the same (2008-06-10),

9. 6929690 - Pigment with a metallic luster (2005-08-16),

10. 6858072 - Surface-modified pearl pigment and process for producing the same (2005-02-22),

11. 6340723 - Highly orientated flaky pigment and a process for producing the same (2002-01-22),

12. 5540769 - Platelet-like colored pigments and process for producing the same (1996-07-30),

13. 5456749 - Anti-discoloring pearly luster pigment and method of preparing the same (1995-10-10),

14. 5350448 - Electrically conductive pigments (1994-09-27),

15. 5228911 - Oxidized graphite flaky particles and pigments based thereon (1993-07-20),

Title: Innovations and Contributions of Katsuhisa Nitta

Introduction

Katsuhisa Nitta, an inventor from Fukushima-ken, Japan, has made significant strides in the field of materials science, particularly with his development of innovative alpha-alumina flakes. With a total of 18 patents to his name, he has contributed valuable advancements that are utilized across various industries.

Latest Patents

Nitta's latest patents focus on alpha-alumina flakes characterized by a particle thickness ranging from 130 to 400 nm. These flakes exhibit specific D-values of 15-30 μm, 30-45 μm, and less than 9.5 μm. The applications of these alumina flakes are diverse, including use in varnishes, paints, automotive coatings, printing inks, masterbatches, plastics, and cosmetic formulations. Additionally, these flakes serve as substrates for effect pigments and in the formulation of organic dyes, thereby enhancing product performance and versatility.

Career Highlights

Throughout his career, Katsuhisa Nitta has worked at notable institutions such as Merck Patent GmbH and Merck Patent Gesellschaft mit beschränkter Haftung. His work in these companies has facilitated the application and commercialization of his inventions, reinforcing his significance in the patent landscape.

Collaborations

Nitta has collaborated with skilled professionals, including Gerhard Pfaff and Ryuta Suzuki. These partnerships have contributed to the development and refinement of his patented technologies, showcasing the importance of teamwork in the innovation process.

Conclusion

Katsuhisa Nitta's commitment to innovation in materials science, particularly with alpha-alumina flakes, has not only resulted in numerous patents but also provided essential advancements for various industries. As he continues to explore new applications for his inventions, his impact as an inventor remains significant in the realm of technology and materials development.

Profile summary based on public USPTO records.