Tomoyuki Ichikawa

This inventor holds 121 USPTO granted patents and 3 published patent applications, plus 2 CIPO patents and 26 EPO patents, primarily in Automotive Lighting (CPC class B60Q1-04). Top assignees: Koito Manufacturing Company, Ltd., Ricoh Company, Ltd., Nec Energy Devices, Ltd.. Active years: 2002-2025.

USPTO Granted Patents = 121 (Patent Applications = 3)

% Patents Active = 60.3

CIPO Patents = 2

EPO Patents = 26 (Patent Applications = 18)

Average Co-Inventor Count = 2.5

ph-index = 16

Forward Citations = 949(Granted Patents)

Forward Citations (Not Self Cited) = 836(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Ohta-ku, JP (2003)
Kanagawa-ken, JP (2003)
Shizuoka-ken, JP (2007 - 2008)
Numazu, JP (2005 - 2010)
Kawasaki city, Kanagawa, JP (2010)
Kawasaki, JP (2008 - 2011)
Kanagwa, JP (2010 - 2012)
Mishima, JP (2015)
Sagamihara, JP (2003 - 2019)
Kanagawa, JP (2003 - 2022)
Shizuoka, JP (2002 - 2024)

Company Filing History:

67 out of 2,310

Koito Manufacturing Company, Ltd.

Nec Energy Devices, Ltd.

patents

4. 2 out of 31

Envision Aesc Energy Devices Ltd.

patents

5. 1 out of 66

Envision Aesc Japan Ltd.

Sanyo Chemical Industries, Ltd.

patents

8. 1 out of 3,570

Toray Industries, Inc.

patents

where one patent can have more than one assignee

Years Active: 2002-2025

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Areas of Expertise:

Automotive Lamp

Lighting Circuit

Light Source Module

Vehicular Lamp

Light-Emitting Module

Vehicle Lamp Control

Swivel Actuator

Scanning Beam

Battery Manufacturing

Electricity Storage System

Charging Method

Drive Circuit

121 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12259104 - Automotive lamp (2025-03-25),

2. 12173881 - Lamp unit (2024-12-24),

3. 12167518 - Light source module and lighting circuit (2024-12-10),

4. 12058792 - Vehicle lamp (2024-08-06),

5. 12048073 - Lighting circuit (2024-07-23),

6. 11910504 - Light source module and lighting circuit (2024-02-20),

7. 11906123 - Light source module (2024-02-20),

8. 11872932 - Lighting circuit for automotive lamp (2024-01-16),

9. 11729875 - Automotive lamp (2023-08-15),

10. 11655968 - Light-emitting module (2023-05-23),

11. 11653434 - Lighting circuit of automotive lamp (2023-05-16),

12. 11612034 - Automotive lamp (2023-03-21),

13. 11602029 - Automotive lamp (2023-03-07),

14. 11558943 - Lighting circuit of automotive lamp (2023-01-17),

15. 11477871 - Lighting circuit of automotive lamp (2022-10-18),

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