Sendai-shi, Miyagi, Japan

Tadahiro Ohmi

USPTO Granted Patents = 182 

 

Average Co-Inventor Count = 2.5

ph-index = 26

Forward Citations = 2,872(Granted Patents)

Forward Citations (Not Self Cited) = 2,828(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Sendai-City Miyagi-Prefecture, JP (1990)
  • Komegabukuro, Sendai-shi, Miyagi-ken, JP (1991)
  • Aoba-ku Sendai-shi, Miyagi-ken, JP (1994)
  • Aobu-ku, Sendai-shi, Miyagi-ken JP (1994)
  • Miyagi-ku Sendai-shi, JP (1995)
  • Miyagi-ken, Sendai-shi JP (1995)
  • Aoba-ku Miyagi-ken Sendai-shi, JP (1995 - 1996)
  • Aoba-ku Sendai-shi, Miyagi-ken JP (1995 - 1996)
  • Aoba-ku Miyagi-ken Sendai-shi JP (1996)
  • 980 Aoba-ku, Sendai-shi, Miyagi-ken, JP (1996)
  • Aoba-ku Sendai-shi Miyagi-ken, JP (1997)
  • Aoba-ku, Sendai-shi Miyagi-ken JP (1998)
  • Sendai Miyagi-ken JP (1992 - 1999)
  • Sendai-shi Miyagi-ken JP (1995 - 1999)
  • Aoba-ku Sendai-shi Miyagi-ken JP (1997 - 1999)
  • Miyagi-ken, JP (1999)
  • Sendai, Migaya-ken, JP (1999)
  • Miyogi-ken, JP (1999)
  • Aoba-ku, Sendai-Shi. Miyagi-ken, JP (1999)
  • Miyagi 980, JP (2000)
  • Aoba-ku, Sendai, Miyagi, JP (2000)
  • Komegabukuro 2-chome Aoba-ku, Sendai-shi, Miyagi-ken JP (2000)
  • Sendai-shi JP (2001)
  • Komegabukuro 2-chome, Aoba-ku, Sendai-shi, Miyagi-ken JP (2001)
  • Komegafukuro, Aoba-ku, Sendai-shi, Miyagi JP (2001)
  • Sendai, Miyagi, JP (2002)
  • Sendai, Miyagi JP (2002)
  • Sendai, Miyagi-ken JP (2002)
  • Sendai-Shi, Miyagi-ken, JP (1998 - 2003)
  • Miyagi-ken JP (2000 - 2003)
  • Komegafukuro, Aoba-ku, Sendai-shi, Miyagi, JP (2003)
  • Sendai, Miyagi-ken, JP (2004)
  • Sendai-shi, Miyagi-Ken JP (1989 - 2005)
  • Aoba-ku, Sendai-shi Miyagi JP (2005)
  • Sendai-shi Miyagi, JP (2005 - 2006)
  • Miyagi 980 JP (2006)
  • Miyagi, Sendai JP (2006)
  • Aoba-ku, Sendai-shi, Miyagi-ken JP (2001 - 2007)
  • Swndai-shi, Miyagi-ken JP (2007)
  • Sendai-shi, Mayagi, JP (2007)
  • Komegahukuro 2-chome, Aoba-ku, Sendai-shi, Miyagi JP (2008)
  • Sendai-shi, JP (2001 - 2009)
  • Sendai-shi, Miyagi, JP (1990 - 2010)
  • Aoba-ku, Sendai-shi, Miyagi-ken, JP (1995 - 2010)
  • Sendai-shi, Miyagi JP (2000 - 2010)
  • Miyagi JP (2001 - 2010)
  • Aoba-ku, Sendai-shi, Miyagi JP (2003 - 2010)

Company Filing History:

goldMedal27 out of 441 
 
Fujikin Inc.
 patents
silverMedal20 out of 10,307 
 
Tokyo Electron Limited
 patents
bronzeMedal3 out of 6 
 
Takasago Netsugaku Kogyo Kabushiki Kaisha
 patents
42 out of 56 
 
Hitachi Plant Engineering Construction Co., Ltd.
 patents
52 out of 25,537 
 
Sharp Kabushiki Kaisha Corporation
 patents
62 out of 1,237 
 
Zeon Corporation
 patents
72 out of 8 
 
Kabushiki Kaisha Ultraclean Technology Research Institute
 patents
81 out of 8,199 
 
Yazaki Corporation
 patents
91 out of 1,099 
 
Shin-etsu Handotai Co., Ltd.
 patents
101 out of 90,631 
 
Canon Kabushiki Kaisha
 patents
111 out of 1 
 
I & F, Inc.
 patent
121 out of 4,273 
 
Daikin Industries, Ltd.
 patents
131 out of 20 
 
Osaka Sanso Kogyo Ltd.
 patents
141 out of 1 
 
Kabushiki Kaisha Daishodenshi
 patent
151 out of 2 
 
Tokyo Eectron Limited
 patents
161 out of 1 
 
Stella Chemifa Kabushiki
 patent
17182 out of 832,718 
Other
 patents
where one patent can have more than one assignee

Years Active: 1989-2010

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Areas of Expertise:
Plasma Processing
Semiconductor Fabrication
Fluid Control Devices
Vacuum Technology
Microwave Processing
Dielectric Films
Pressure Sensors
Flash Memory Devices
Chemical Solutions
Substrate Manufacturing
Resin Molding
High Purity Moisture Generation
182 patents (USPTO):Explore Patents

Title: Tadahiro Ohmi: Innovating Engineering Solutions for Fluid Control

Introduction:

Tadahiro Ohmi, hailing from Sendai-shi, Miyagi, JP, is an accomplished inventor and engineer specializing in fluid control systems. With an impressive track record of 143 patents, Ohmi has made substantial contributions to the field of engineering, particularly in the development of water hammerless opening devices and plasma processing apparatus.

Latest Patents:

Ohmi's recent patents highlight his expertise in creating efficient and safe fluid control mechanisms. His patent titled "Method for water hammerless opening of fluid passage, and method for supplying chemical solutions and device for water hammerless opening for which the method is used" addresses the need for an actuator-operated valve system that eliminates water hammer during fluid passage opening. The device incorporates an electro-pneumatic conversion device, vibration sensors, and tuning boxes to precisely control the actuator pressure, ensuring smooth and controlled fluid flow.

Another notable patent is Ohmi's "Plasma processing apparatus." This innovation focuses on improving microwave plasma processing by optimizing the structure and dimensions of various components. The inclusion of a lattice-like shower plate between the dielectric material shower plate and the substrate allows for efficient plasma excitation, while grounding the lattice plate ensures precise control over ion incident energy on the substrate.

Career Highlights:

Throughout his career, Tadahiro Ohmi has made significant contributions to the industry, innovating in various areas of fluid control systems. His work highlights his expertise in developing solutions that optimize efficiency, precision, and safety in fluid management processes.

Collaborations:

Ohmi has had the opportunity to collaborate with esteemed professionals in his field. Notable colleagues include Nobukazu Ikeda and Tadashi Shibata. Their combined expertise and shared passion for innovation have undoubtedly contributed to Ohmi's achievements in the field of fluid control systems.

Conclusion:

Tadahiro Ohmi's extensive patent portfolio demonstrates his commitment to advancing engineering solutions for fluid control. His contributions in developing water hammerless opening devices and plasma processing apparatus showcase his dedication to efficiency and precision. With a career marked by innovation and collaboration, Ohmi continues to push the boundaries of fluid control technology, making him a true trailblazer in his field.

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