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For the Inventor, By the Inventor

Tokyo, Japan

Denka Seiken Co., Ltd.


USPTO Granted Patents = 61



Forward Citations = 138

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73 inventors (with patents filed for the assignee):

goldMedal Yasuki Itoh (13 out of 17 patents)

silverMedal Hiroshi Matsui (9 out of 46 patents)

bronzeMedal Yoshiaki Hirayama (7 out of 10 patents)

4.  Hiroyuki Kurosawa (6 out of 8 patents)

5.  Shinya Ogasawara (6 out of 6 patents)

6.  Toshinori Sato (6 out of 6 patents)

7.  Takashi Miyazawa (5 out of 9 patents)

8.  Akihiko Saito (5 out of 8 patents)

9.  Kunio Kamata (5 out of 5 patents)

10.  Yuki Shinohara (4 out of 4 patents)

11.  Tatsuo Miyamura (4 out of 20 patents)

12.  Naokazu Takeda (4 out of 5 patents)

13.  Katsuro Natori (4 out of 4 patents)

14.  Seiya Sato (4 out of 4 patents)

15.  Maiko Higuchi (3 out of 5 patents)


Core Competencies:
Immunochromatography
Influenza Virus Assay
Cholesterol Quantification
Antibody-Immobilized Carrier
Renal Disease Detection
Microbial Antigen Collection
Lipoprotein Analysis
Toxin Detection
Virus Detection Method
Urinary Protein Quantitation
Hemagglutinin Measurement
GFR Estimation

61 patents:

1. 10883985 - Immunochromatographic test piece and immunochromatography method using same (2021-01-05),
2. 10527618 - Sample processing method for influenza virus immunoassay, and immunoassay method (2020-01-07),
3. 10436783 - Method for microbial antigen collection (2019-10-08),
4. 10422728 - Sample extraction kit and sample extraction method (2019-09-24),
5. 10415077 - Method of reducing measurement error caused by catalase inhibition by azide (2019-09-17),
6. 10365277 - Method for measuring hemagglutinin from influenza virus (2019-07-30),
7. 10345294 - Method of amplifying detection light using light-reflecting material in immunochromatography (2019-07-09),
8. 10295533 - Test kit (2019-05-21),
9. 10077286 - Method for removal of triglycerides in lipoproteins other than low-density lipoproteins (2018-09-18),
10. 10031145 - Method for quantifying cholesterol in high-density lipoprotein 2, and reagent kit for the method (2018-07-24),
11. 10018641 - Method for quantifying cholesterol in high density lipoprotein 3 (2018-07-10),
12. 9939436 - Immunological analysis method and reagent (2018-04-10),
13. 9897601 - Test kit (2018-02-20),
14. 9890412 - Method for quantifying subfraction of cholesterol (−C) in high-density lipoprotein (HDL) (2018-02-13),
15. 9625452 - Method for estimating GFR (glomerular filtration rate) from measured value of megalin in urine (2017-04-18),
DENKA SEIKEN CO., LTD. is a Japanese company specializing in the development, manufacturing, and distribution of vaccines, pharmaceuticals, and other healthcare products. With a strong focus on research and innovation, DENKA SEIKEN is dedicated to improving public health and contributing to the well-being of society. For more information, visit their official website.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Jan 6 2026

61 Patents

#622 in Tokyo

#1,482 in Japan

#11,629 in the World

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Tokyo, Japan

Denka Seiken Co., Ltd.

Forward Citations = 138

73 inventors:

goldMedal Yasuki Itoh (13 out of 17 patents)

silverMedal Hiroshi Matsui (9 out of 46 patents)

bronzeMedal Yoshiaki Hirayama (7 out of 10 patents)

4.  Hiroyuki Kurosawa (6 out of 8 patents)

5.  Shinya Ogasawara (6 out of 6 patents)

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