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Yokohamashi, Japan

Hitachi Communication Systems, Inc.

USPTO Granted Patents = 17

Forward Citations = 437

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48 inventors (with patents filed for the assignee):

Tomio Furuya (3 out of 21 patents)

Nobuhiro Matsudaira (3 out of 18 patents)

Masao Mizukami (3 out of 21 patents)

4. Nobuaki Kanazawa (3 out of 3 patents)

5. Fuminori Morisawa (2 out of 24 patents)

6. Takayuki Tsutsui (2 out of 104 patents)

7. Kouichi Matsushita (2 out of 8 patents)

8. Masahiro Kumon (2 out of 4 patents)

9. Takuo Tsuzuki (2 out of 7 patents)

10. Masataka Takano (2 out of 7 patents)

11. Masayuki Hashimura (2 out of 3 patents)

12. Mitsuhiro Kotake (2 out of 3 patents)

13. Yoshiharu Kondoh (2 out of 3 patents)

14. Kunihiro Ito (2 out of 2 patents)

15. May Suzuki (1 out of 16 patents)

17 patents: Sort by Forward Citations

1. 7215203 - High frequency power amplifier circuit device (2007-05-08),

2. 7078974 - High frequency power amplifier circuit (2006-07-18),

3. 6976138 - Semiconductor device for data communication control and radio communication apparatus (2005-12-13),

4. 6967535 - High frequency power amplifier circuit (2005-11-22),

5. 6879592 - Switching system and switching control method (2005-04-12),

6. 5880601 - Signal receiving circuit and digital signal processing system (1999-03-09),

7. 5815564 - System for connecting an incoming call to a selected one of a number of (1998-09-29),

8. 5734653 - Cell/ packet assembly and disassembly apparatus and network system (1998-03-31),

9. 5631931 - Bus type clock supplying system for providing a clock in a communication (1997-05-20),

10. 5600630 - Path changing system and method for use in ATM communication apparatus (1997-02-04),

11. 5541992 - System for connecting an incoming call to a selected one of a number of (1996-07-30),

12. 5506783 - Method and apparatusa for determining supply sequence of products ot be (1996-04-09),

13. 5495186 - Differential type MOS transmission circuit (1996-02-27),

14. 5444740 - A ternary signal transmission circuit and method (1995-08-22),

15. 5300798 - Semiconductor integrated circuit device (1994-04-05),

Hitachi Communication Systems, Inc. is a leading global provider of advanced telecommunications and IT solutions. With a wide range of cutting-edge products and services, the company specializes in delivering innovative communication technologies to businesses and organizations worldwide. Their solutions optimize network infrastructure, enhance connectivity, and enable digital transformation across industries. Visit their website to learn more about their comprehensive offerings.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

17 Patents

#9 in Yokohamashi

#3,164 in Japan

#34,861 in the World

Yokohamashi, Japan

Hitachi Communication Systems, Inc.

Forward Citations = 437

48 inventors:

Tomio Furuya (3 out of 21 patents)

Nobuhiro Matsudaira (3 out of 18 patents)

Masao Mizukami (3 out of 21 patents)

4. Nobuaki Kanazawa (3 out of 3 patents)

5. Fuminori Morisawa (2 out of 24 patents)

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