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For the Inventor, By the Inventor

Kobe, Japan

Dx Antenna Company, Limited

Calculating rank
USPTO Granted Patents = 59

% Expired Patents = 27.1


Forward Citations = 1,070

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25 inventors (with patents filed for the assignee):

goldMedal Shigemi Inoue (20 out of 20 patents)

silverMedal Toshiaki Shirosaka (10 out of 10 patents)

bronzeMedal Toshio Fujita (8 out of 8 patents)

4.  Eiji Shibuya (7 out of 11 patents)

5.  Shingo Fujisawa (7 out of 7 patents)

6.  Akihiko Nagatomi (7 out of 7 patents)

7.  Kiyotaka Tatekawa (6 out of 6 patents)

8.  Shotaro Horii (4 out of 4 patents)

9.  Fusao Sato (4 out of 4 patents)

10.  Yoshio Fujino (4 out of 4 patents)

11.  Kenichi Fujita (3 out of 3 patents)

12.  Takehiro Onomatsu (2 out of 39 patents)

13.  Nobuo Nakajima (2 out of 9 patents)

14.  Koichi Gyoda (2 out of 6 patents)

15.  Hideto Yoshimura (2 out of 8 patents)


Core Competencies:
Broadcast Receiving Apparatus
Television Receiving Apparatus
Variable Directivity Antenna
Multibeam Feedhorn
Indoor Antenna
Satellite Communication
Parabolic Antenna
Signal Receiving System
Antenna System
Device for Fixing Antenna
Antenna Fixture
High Frequency Coaxial Line

59 patents:

1. 8126416 - Broadcast receiving apparatus (2012-02-28),
2. 7936317 - Television receiving apparatus (2011-05-03),
3. 7808431 - Antenna apparatus capable of directivity control (2010-10-05),
4. 7486249 - Antenna (2009-02-03),
5. D558189 - Indoor antenna (2007-12-25),
6. 7292199 - Antenna apparatus (2007-11-06),
7. 7277063 - Variable directivity antenna and variable directivity antenna system using the antennas (2007-10-02),
8. D548730 - Indoor antenna (2007-08-14),
9. 7205955 - Antenna (2007-04-17),
10. 7205951 - Multibeam feedhorn, feed apparatus, and multibeam antenna (2007-04-17),
11. D535982 - Antenna (2007-01-30),
12. D533545 - Antenna (2006-12-12),
13. 7084829 - Signal receiving system (2006-08-01),
14. 7071891 - Antenna apparatus (2006-07-04),
15. D520499 - Antenna (2006-05-09),
Company Overview
Dx Antenna Company, Limited, based in Kobe, Japan, specializes in advanced antenna technology, focusing on the development and manufacturing of a wide range of receiving apparatuses. Their expertise encompasses broadcast and television receiving systems, variable directivity antennas, and satellite communication solutions. The company is recognized for its innovative designs in indoor antennas and parabolic antennas, contributing significantly to signal receiving systems that enhance communication capabilities across various applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

59 Patents

#19 in Kobe

#1,557 in Japan

#12,252 in the World

Kobe, JP
Kobe, Japan

Dx Antenna Company, Limited

Forward Citations = 1,070

25 inventors:

goldMedal Shigemi Inoue (20 out of 20 patents)

silverMedal Toshiaki Shirosaka (10 out of 10 patents)

bronzeMedal Toshio Fujita (8 out of 8 patents)

4.  Eiji Shibuya (7 out of 11 patents)

5.  Shingo Fujisawa (7 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dx Antenna Company, Limited. Retrieved from https://idiyas.com/company/dx-antenna-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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