% Expired Patents = 25.0

Forward Citations = 12

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8 inventors (with patents filed for the assignee):

Hideki Honma (2 out of 3 patents)

Katsuaki Kaneko (2 out of 5 patents)

Norihito Akiyama (1 out of 7 patents)

4. Shoichiro Irie (1 out of 7 patents)

5. Hiroshi Harada (1 out of 1 patent)

6. Sachiko Sotokawa (1 out of 1 patent)

7. Hajime Karibe (1 out of 1 patent)

8. Masahiko Yamamoto (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 6391435 - Reinforcing bamboo fiber, manufacturing method thereof, inorganic molded body using reinforcing bamboo fiber, and manufacturing method thereof (2002-05-21),

2. 6379457 - Cement moldings containing vegetable fiber and method for producing the same (2002-04-30),

3. 6352072 - Ingot support device for slicing silicon (2002-03-05),

4. 6333377 - Ingot support device for slicing silicon (2001-12-25),

Company Overview

A & a Material Corporation is a leading supplier of construction materials in the United States. With a strong focus on quality and customer satisfaction, we provide a wide range of products including aggregates, asphalt, and ready-mix concrete. Our experienced team and state-of-the-art facilities ensure that we deliver top-notch materials for all types of construction projects. Contact us today to learn more about how we can meet your material needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#3,058 in Tokyo

#7,588 in Japan

Tokyo, Japan

A & a Material Corporation

Forward Citations = 12

8 inventors:

Hideki Honma (2 out of 3 patents)

Katsuaki Kaneko (2 out of 5 patents)

Norihito Akiyama (1 out of 7 patents)

4. Shoichiro Irie (1 out of 7 patents)

5. Hiroshi Harada (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: A & a Material Corporation. Retrieved from https://idiyas.com/company/a-and-a-material

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]