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Nihon Parkerizing Co., Ltd.

USPTO Granted Patents = 128

% Expired Patents = 7.0

CIPO Patents = 4

EPO Patents = 43

Trademarks = 1

Forward Citations = 813

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316 inventors (with patents filed for the assignee):

Kazuhiko Mori (9 out of 32 patents)

Takao Ogino (8 out of 39 patents)

Hideaki Kaneko (7 out of 17 patents)

4. Ryosuke Sako (7 out of 7 patents)

5. Masahiro Yamamoto (6 out of 46 patents)

6. Ryoji Morita (6 out of 11 patents)

7. Hiroshi Okita (6 out of 6 patents)

8. Toshi Miyawaki (6 out of 8 patents)

9. Tomohiro Iko (5 out of 5 patents)

10. Arata Suda (5 out of 7 patents)

11. Masaaki Beppu (5 out of 6 patents)

12. Shigeo Tanaka (4 out of 89 patents)

13. Junichi Uchida (4 out of 9 patents)

14. Hidehiro Yamaguchi (4 out of 5 patents)

15. Takaomi Nakayama (4 out of 4 patents)

Core Competencies:

Surface Treatment

Metal Coating

Chemical Conversion

Corrosion Resistance

Electrostatic Powder Coating

Aqueous Coating

Hydrophilic Treatment

Aluminum Alloy

Magnesium Material

Electrochemical Cells

Surgical Electrode

Thermoelectric Conversion

128 patents: Sort by Forward Citations

1. 12644014 - Rust-preventive composition and automobile component (2026-06-02),

2. 12540248 - Metal surface-treating agent, and metal material with coating film and method for manufacturing same (2026-02-03),

3. 12178939 - Inorganic salt-protein composite medical instrument (2024-12-31),

4. 12137962 - Surgical electrode having surface treatment coating (2024-11-12),

5. 12018175 - Surface treatment agent for metal materials, metal material coated with surface treatment film, and method for producing same (2024-06-25),

6. 11965247 - Pretreatment agent and chemical conversion treatment agent (2024-04-23),

7. 11927225 - Sliding spline shaft device (2024-03-12),

8. 11725287 - Method for manufacturing a magnesium material or magnesium alloy material with a coating (2023-08-15),

9. 11637230 - Thermoelectric conversion element and thermoelectric conversion module having same (2023-04-25),

10. 11603592 - Metallic material surface treatment agent, metallic material having surface treatment coating, and manufacturing method therefor (2023-03-14),

11. 11377568 - Metal surface treatment agent, metal surface treatment method, and metal material (2022-07-05),

12. 11359288 - Chemical conversion treatment agent, method for producing chemical conversion coating, metal material having chemical conversion coating, and painted metal material (2022-06-14),

13. 11332818 - Method for producing surface-hardened material (2022-05-17),

14. 11174396 - Electrostatic powder coating material, coated article having coating film, and method for producing same (2021-11-16),

15. 10854396 - Packaging material for electrochemical cells (2020-12-01),

Company Overview

Nihon Parkerizing Co., Ltd., based in Tokyo, specializes in advanced metal surface treatment technologies. The company focuses on enhancing the durability and performance of metal components through various processes, including chemical conversion, electrostatic powder coating, and aqueous coating. With a strong emphasis on corrosion resistance and hydrophilic treatment, Nihon Parkerizing serves diverse industries, ensuring that aluminum alloys and other metals meet stringent quality standards for longevity and reliability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

128 Patents

#474 in Tokyo

#965 in Japan

#6,271 in the World

Nihon Parkerizing Co., Ltd.

Forward Citations = 813

316 inventors:

Kazuhiko Mori (9 out of 32 patents)

Takao Ogino (8 out of 39 patents)

Hideaki Kaneko (7 out of 17 patents)

4. Ryosuke Sako (7 out of 7 patents)

5. Masahiro Yamamoto (6 out of 46 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nihon Parkerizing Co., Ltd.. Retrieved from https://idiyas.com/company/nihon-parkerizing-company

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

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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