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For the Inventor, By the Inventor

Tokyo, Japan

Nittan Company Limited

USPTO Granted Patents = 77

% Expired Patents = 1.3


Trademarks = 1

Forward Citations = 1,040

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60 inventors (with patents filed for the assignee):

goldMedal Tetsuo Kimura (30 out of 31 patents)

silverMedal Takashi Suzuki (17 out of 196 patents)

bronzeMedal Seiichi Tanaka (11 out of 11 patents)

4.  Kazuyoshi Sakurai (8 out of 9 patents)

5.  Takao Fujisawa (4 out of 6 patents)

6.  Nobuyuki Akiyama (4 out of 6 patents)

7.  Yasunori Oya (4 out of 4 patents)

8.  Seiji Tsubouchi (4 out of 4 patents)

9.  Akihiro Kobayashi (4 out of 7 patents)

10.  Isao Sasaki (3 out of 16 patents)

11.  Yuki Yoshikawa (3 out of 4 patents)

12.  Ichiro Hamada (3 out of 44 patents)

13.  Hiroshi Tanaka (2 out of 181 patents)

14.  Hirofumi Fujii (2 out of 5 patents)

15.  Akihisa Kudoh (2 out of 3 patents)


Core Competencies:
Fire Detector
Smoke Detector
Flame Detector
Fire Alarm System
Environmental Abnormality Alarm
Central Monitoring System
Ionization Smoke Detector
Combination Detector
Heat-Sensing Detector
Smoke Density Monitor
Signal Transmission System
Photoelectric Smoke Sensor

77 patents:

1. D651926 - Fire detector (2012-01-10),
2. D621287 - Fire detector (2010-08-10),
3. 7714290 - Flame detector (2010-05-11),
4. 7248173 - Smoke detector (2007-07-24),
5. 6693529 - Fire alarm system (2004-02-17),
6. 6577233 - Fire alarm system and terminal equipment in the same (2003-06-10),
7. D450008 - Fire detector (2001-11-07),
8. 6300876 - Fire detector (2001-10-09),
9. 6195014 - Fire detector (2001-02-27),
10. D433644 - Fire detector (2000-11-14),
11. 6105077 - Transmitting system with address polling for providing a control signal (2000-08-15),
12. D426482 - Fire detector (2000-06-13),
13. 6057775 - Ionization smoke detector (2000-05-02),
14. 6011478 - Smoke sensor and monitor control system (2000-01-04),
15. 5830412 - Sensor device, and disaster prevention system and electronic equipment (1998-11-03),
Company Overview
Nittan Company Limited, headquartered in Tokyo, Japan, specializes in the development and manufacturing of advanced fire detection systems. The company focuses on a range of technologies including fire detectors, smoke detectors, flame detectors, and comprehensive fire alarm systems. Nittan also offers solutions for environmental abnormality alarms and central monitoring systems, ensuring safety and reliability in various settings. With a commitment to innovation, Nittan plays a crucial role in enhancing fire safety standards globally.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

77 Patents

#639 in Tokyo

#1,335 in Japan

#9,777 in the World

Tokyo, JP
Tokyo, Japan

Nittan Company Limited

Forward Citations = 1,040

60 inventors:

goldMedal Tetsuo Kimura (30 out of 31 patents)

silverMedal Takashi Suzuki (17 out of 196 patents)

bronzeMedal Seiichi Tanaka (11 out of 11 patents)

4.  Kazuyoshi Sakurai (8 out of 9 patents)

5.  Takao Fujisawa (4 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nittan Company Limited. Retrieved from https://idiyas.com/company/nittan-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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