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Oval Corporation

USPTO Granted Patents = 49

CIPO Patents = 2

EPO Patents = 24

Trademarks = 5

Forward Citations = 241

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44 inventors (with patents filed for the assignee):

Hirokazu Kitami (14 out of 14 patents)

Yuichi Nakao (12 out of 12 patents)

Hideki Shimada (8 out of 11 patents)

4. Seiji Kobayashi (6 out of 230 patents)

5. Norio Sukemura (6 out of 6 patents)

6. Naoki Matsubara (5 out of 25 patents)

7. Shingo Gomi (5 out of 6 patents)

8. Katsuichi Uchida (3 out of 3 patents)

9. Kenichi Matsuoka (3 out of 6 patents)

10. Kimihiro Ichinose (3 out of 4 patents)

11. Hiroyuki Kabaya (3 out of 3 patents)

12. Takashi Endo (2 out of 58 patents)

13. Yasushi Ito (2 out of 58 patents)

14. Noriaki Nakayama (2 out of 2 patents)

15. Kenji Washio (2 out of 2 patents)

Core Competencies:

Coriolis Flowmeter

Positive Displacement Flowmeter

Multi-Vortex Flowmeter

Signal Processing Apparatus

Temperature Measuring Circuit

Mass Flowmeter Converter

Servo Type Volumetric Flowmeter

Photoelectric Sensing

Flow Rate Converter

Vortex Flow Meter Detector

Instrumentation Device

Maintenance Expert System

49 patents: Sort by Forward Citations

1. 10320377 - Instrumentation device having pulse output function (2019-06-11),

2. 9506801 - Piston prover (2016-11-29),

3. 9506793 - Coriolis flowmeter having a cross-sectional area of channels of the manifolds enabling a reduction in pressure loss (2016-11-29),

4. 8970124 - Field equipment photoelectric sensing sensitivity adjustment (2015-03-03),

5. 8915115 - Piston prover (2014-12-23),

6. 8862434 - Maintenance expert system for measuring instrument (2014-10-14),

7. 8725433 - Signal processing method, signal processing apparatus, and Coriolis flowmeter (2014-05-13),

8. 8725432 - Signal processing method, signal processing apparatus, and Coriolis flowmeter (2014-05-13),

9. 8700343 - Signal processing method, signal processing apparatus, and Coriolis flowmeter (2014-04-15),

10. 8676518 - Signal processing method, signal processing apparatus, and Coriolis flowmeter (2014-03-18),

11. 8676517 - Signal processing method, signal processing apparatus, and coriolis flowmeter (2014-03-18),

12. 8442781 - Coriolis flowmeter (2013-05-14),

13. 8425212 - Positive displacement flowmeter and helical gear (2013-04-23),

14. 8212769 - Hierarchical structure display (2012-07-03),

15. 8184017 - Processing method in operation system, flow rate converter, and coriolis flow meter (2012-05-22),

OVAL CORPORATION is a global technology company that specializes in providing innovative solutions for various industries. With extensive experience in software development, hardware manufacturing, and consulting services, OVAL CORPORATION assists businesses in achieving their digital transformation goals. Through cutting-edge technologies and a customer-centric approach, OVAL delivers customized solutions tailored to meet specific business needs. Visit our website to learn more about our services and how we can help your business thrive.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

49 Patents

#708 in Tokyo

#1,700 in Japan

#13,850 in the World

Oval Corporation

Forward Citations = 241

44 inventors:

Hirokazu Kitami (14 out of 14 patents)

Yuichi Nakao (12 out of 12 patents)

Hideki Shimada (8 out of 11 patents)

4. Seiji Kobayashi (6 out of 230 patents)

5. Norio Sukemura (6 out of 6 patents)

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