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For the Inventor, By the Inventor

JP

Yamatoya Company Limited

Calculating rank
USPTO Granted Patents = 19

% Expired Patents = 5.3


Trademarks = 2

Forward Citations = 201

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18 inventors (with patents filed for the assignee):

goldMedal Iwao Numakura (15 out of 17 patents)

silverMedal Takashi Numakura (12 out of 14 patents)

bronzeMedal Susumu Kitazawa (4 out of 4 patents)

4.  Noriaki Tsukada (2 out of 2 patents)

5.  Noriyuki Ebina (2 out of 2 patents)

6.  Akira Inoue (1 out of 129 patents)

7.  Kazunori Tsuge (1 out of 1 patent)

8.  Yoshihito Tanaka (1 out of 2 patents)

9.  Koji Akiyama (1 out of 1 patent)

10.  Kiyoshi Tanaka (1 out of 3 patents)

11.  Kazuyoshi Nishio (1 out of 1 patent)

12.  Takehiro Kato (1 out of 1 patent)

13.  Tadayoshi Saito (1 out of 1 patent)

14.  Hirotoshi Yoshimura (1 out of 1 patent)

15.  Masaru Murakami (1 out of 25 patents)


19 patents:

1. 9857687 - Method of manufacturing substrate and substrate and mask film (2018-01-02),
2. D614873 - Baby chair (2010-05-04),
3. 7704577 - Bag (2010-04-27),
4. D590608 - Baby chair (2009-04-21),
5. 6391473 - Cu plated ceramic substrate and a method of manufacturing the same (2002-05-21),
6. 5841897 - Method for the tonal control or adjustment of reproduced color image and (1998-11-24),
7. 5371616 - Tonal conversion method of a picture (1994-12-06),
8. 5313310 - Tonal conversion method for pictures (1994-05-17),
9. 5286609 - Process for the formation of a negative resist pattern from a (1994-02-15),
10. 5212518 - Tonal conversion method for a faded color photographic original picture (1993-05-18),
11. 5134494 - Method for producing color and black plates in a multi-color plate (1992-07-28),
12. 5072305 - Picture producing apparatus using picture information values correlated (1991-12-10),
13. 5057931 - Tonal conversion method of pictures for producing reproduced pictures (1991-10-15),
14. 5014120 - Method for processing picture to be reproduced on color picture tube and (1991-05-07),
15. 4956718 - Tonal conversion method for pictures (1990-09-11),
Company Overview
Yamatoya Company Limited is a Japanese enterprise specializing in the development and manufacturing of high-quality packaging solutions. The company focuses on innovative materials and technologies that cater to various industries, including food, pharmaceuticals, and consumer goods. With a commitment to sustainability and efficiency, Yamatoya integrates advanced engineering practices into its product lines, ensuring that they meet the evolving needs of its clients while maintaining environmental responsibility.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

19 Patents

#39 in

#3,039 in Japan

#32,686 in the World

JP
JP

Yamatoya Company Limited

Forward Citations = 201

18 inventors:

goldMedal Iwao Numakura (15 out of 17 patents)

silverMedal Takashi Numakura (12 out of 14 patents)

bronzeMedal Susumu Kitazawa (4 out of 4 patents)

4.  Noriaki Tsukada (2 out of 2 patents)

5.  Noriyuki Ebina (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yamatoya Company Limited. Retrieved from https://idiyas.com/company/yamatoya-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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