Takafumi Oshima

This inventor holds 60 USPTO granted patents and 2 EPO patents, primarily in Gas Sensing Technology (CPC class 3131). Top assignee: Ngk Spark Plug Company, Limited. Active years: 1987-2008.

USPTO Granted Patents = 60

% Patents Active = 73.3

EPO Patents = 2

Average Co-Inventor Count = 3.3

ph-index = 17

Forward Citations = 873(Granted Patents)

Forward Citations (Not Self Cited) = 851(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Nagoya, JP (1990 - 2005)
Aichi, JP (1987 - 2008)

Company Filing History:

60 out of 2,606

Ngk Spark Plug Company, Limited

patents

Years Active: 1987-2008

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Areas of Expertise:

Gas Sensor

NOx Concentration

Ammonia Sensor

Hydrogen Sensor

Humidity Sensor

Mass Flowmeter

Exhaust Gas Sensor

Flow Measurement

Combustible Gas

Silicon Carbide

Ultrasonic Measurement

Vehicle-Lamp Device

60 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7341694 - Ammonia sensor (2008-03-11),

2. 7306712 - Gas sensor and method for measuring gas concentration using the same (2007-12-11),

3. 7276141 - Hydrogen gas sensor (2007-10-02),

4. 7189364 - Hydrogen sensor (2007-03-13),

5. 7080543 - Sensor and method for manufacturing the same (2006-07-25),

6. 6923902 - Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor (2005-08-02),

7. 6886412 - Ultrasonic-wave propagation-time measuring method and gas concentration sensor (2005-05-03),

8. 6812821 - Humidity sensor (2004-11-02),

9. 6805003 - Mass flow sensor and mass flowmeter comprising the same (2004-10-19),

10. 6797151 - CO sensor and method of measuring CO concentration (2004-09-28),

11. 6770508 - Electrode for silicon carbide semiconductor, silicon carbide semiconductor element comprising the electrode, and production method therefor (2004-08-03),

12. 6743352 - Method and apparatus for correcting a gas sensor response for moisture in exhaust gas (2004-06-01),

13. 6695964 - Method and apparatus for measuring NOx gas concentration (2004-02-24),

14. 6652723 - Hydrogen gas sensor (2003-11-25),

15. 6647776 - Split-flow flowmeter with a profusion facing the detection element (2003-11-18),

Title: Unveiling the Inventive Mind of Takafumi Oshima

Introduction: Takafumi Oshima, a prolific inventor based in Aichi, Japan, has left an indelible mark in the world of innovation with an impressive portfolio of 60 patents.

Latest Patents: Among his recent patents is the groundbreaking invention of an Ammonia Sensor. This sensor features lead portions on an insulating substrate, comb-shaped electrodes, a sensitive layer predominantly containing ZrOand WO, and a protective layer. Another notable creation is the Gas Sensor designed to measure gas concentration accurately even in the presence of water vapor.

Career Highlights: Takafumi Oshima is a key figure at the esteemed Ngk Spark Plug Company, Limited, where his inventive spirit continues to thrive. His dedication to pushing the boundaries of technological advancement is truly commendable.

Collaborations: In his innovative journey, Takafumi Oshima has collaborated closely with talented individuals such as Noboru Ishida and Ryuji Inoue, further fueling the creative synergy in the realm of invention.

Conclusion: Through his relentless pursuit of innovation and his remarkable contributions to the field of sensor technology, Takafumi Oshima exemplifies the essence of a visionary inventor whose work leaves a lasting impact on society.