Sendai, Japan

Tadahiro Ohmi

USPTO Granted Patents = 201 

Average Co-Inventor Count = 3.2

ph-index = 26

Forward Citations = 2,752(Granted Patents)

Forward Citations (Not Self Cited) = 2,704(Dec 10, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal52 out of 986 
 
Tohoku University
 patents
silverMedal32 out of 10,341 
 
Tokyo Electron Limited
 patents
bronzeMedal28 out of 90,756 
 
Canon Kabushiki Kaisha
 patents
427 out of 442 
 
Fujikin Inc.
 patents
517 out of 73 
 
Zaidan Hojin Handotai Kenkyu Shinkokai
 patents
614 out of 27 
 
Tadahiro Ohmi
 patents
75 out of 6 
 
Hashimoto Chemical Co., Ltd.
 patents
85 out of 32 
 
Foundation for Advancement of International Science
 patents
94 out of 182 
 
Nippon Sanso Corporation
 patents
104 out of 24 
 
Semiconductor Research Foundation
 patents
114 out of 6 
 
Hashimoto Chemical Industries Co., Ltd.
 patents
124 out of 57 
 
Nippon Valqua Industries, Ltd.
 patents
133 out of 6 
 
Daisho Denshi Co., Ltd.
 patents
143 out of 50 
 
Mitsubishi Aluminum Company, Ltd.
 patents
152 out of 144 
 
Taiyo Nippon Sanso Corporation
 patents
162 out of 147 
 
Organo Corporation
 patents
172 out of 135 
 
Semiconductor Technology Academic Research Center
 patents
182 out of 4 
 
Tadashi Shibata
 patents
192 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents
202 out of 4,048 
 
Alps Electric Co., Ltd.
 patents
212 out of 30 
 
Shinko Pantec Co., Ltd.
 patents
222 out of 14 
 
Kabushiki Kaisha Watanabe Shoko
 patents
232 out of 4,814 
 
Fuji Electric Co., Ltd.
 patents
242 out of 6,015 
 
Rohm Co., Ltd.
 patents
252 out of 2 
 
Ultra Clean Technology Systems and Services Inc.
 patents
262 out of 25,561 
 
Sharp Kabushiki Kaisha Corporation
 patents
271 out of 1 
 
Motoyama Eng. Works, Lts
 patent
281 out of 1 
 
Hashimoto Kasei Kabushiki-kaisya
 patent
291 out of 120 
 
S-tec Corporation
 patents
301 out of 1 
 
Canon Kabushiki Kaisha/applied Materials Japan Inc.
 patent
311 out of 1 
 
Ohmi,tadahiro, Miyagi
 patent
321 out of 1 
 
Tadahiro Ohmi and Organo Corporation
 patent
331 out of 21 
 
Toyo Denki Seizo Kabushiki Kaisha
 patents
341 out of 20 
 
Osaka Sanso Kogyo Ltd.
 patents
351 out of 7 
 
Kabushiki Kaisha Motoyamaseisakusho
 patents
361 out of 15 
 
Future Vision Inc.
 patents
371 out of 1 
 
Ohmi; Tadahiro
 patent
381 out of 1 
 
Canon Kabushiki Kaisha & Tadahiro Ohmi
 patent
391 out of 13 
 
Handotai Kenkyu Shinkokai
 patents
401 out of 5 
 
Motoyama Eng. Works, Ltd.
 patents
411 out of 2 
 
Osaka Sanso Kogyo Kabushiki-kaisha
 patents
421 out of 1,239 
 
Zeon Corporation
 patents
431 out of 37 
 
Frontec Incorporated
 patents
441 out of 2,350 
 
Mitsubishi Chemical Corporation
 patents
451 out of 1,482 
 
Ibiden Company Limited
 patents
461 out of 1,432 
 
Ube Industries, Inc.
 patents
471 out of 2,637 
 
The Furukawa Electric Co., Ltd.
 patents
481 out of 516 
 
Toshiba Mitsubishi-electric Industrial Systems Corporation
 patents
491 out of 15 
 
Stella Chemifa Kabushiki Kaisha
 patents
501 out of 8,208 
 
Yazaki Corporation
 patents
511 out of 56 
 
Hitachi Plant Engineering Construction Co., Ltd.
 patents
521 out of 306 
 
Nippon Light Metal Company, Ltd.
 patents
531 out of 51 
 
Stella Chemifa Corporation
 patents
541 out of 6 
 
Takasago Netsugaku Kogyo Kabushiki Kaisha
 patents
5518 out of 832,891 
Other
 patents
where one patent can have more than one assignee

Years Active: 1981-2018

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Areas of Expertise:
Semiconductor Transistor
Magnetron Sputtering
Photoelectric Conversion Element
Plasma Processing Apparatus
Flex-Rigid Printed Wiring Board
Solar Cell Technology
Thin Film Transistor
Ion Implanting Apparatus
Gas Purifying Device
Organic Film Forming
Multilayer Circuit Substrate
Metal Gasket
201 patents (USPTO):Explore Patents

Title: Tadahiro Ohmi: Innovations and Patents Extraordinaire

Introduction:

Tadahiro Ohmi is a renowned inventor and researcher hailing from Sendai, Japan. With an impressive portfolio of 201 patents to his name, Ohmi has made significant contributions in the fields of film surface smoothing and semiconductor transistors. Let's delve deeper into his latest patents, career highlights, collaborations, and his impact on the world of innovation.

Latest Patents:

Ohmi's recent patents include the "Method for smoothing a perfluoro alkoxy alkane film surface" and the "Semiconductor transistor."

The first patent focuses on improving the smoothness of the free surface area of a perfluoro alkoxy alkane (PFA) film. By subjecting the film to specific temperature conditions, Ohmi's method ensures that the film's free surface area is melted, solidified, and then remelted, resulting in enhanced smoothness. This technique finds applications in various industries where PFA films are used, such as AlO, Ni, or NiF films.

Ohmi's second patent revolves around semiconductor transistors. He introduces a novel design involving an active layer composed of GaN-based semiconductor and a gate insulating film. The gate insulating film comprises a first insulating film (including compounds like AlO, HfO, ZrO, LaO, and YO) and a second insulating film composed of SiO on top of it. This innovation contributes to the advancement of semiconductor technology, paving the way for improved transistor performance.

Career Highlights:

Throughout his career, Tadahiro Ohmi has made significant contributions to the field of innovation. He has worked with esteemed companies, including Tokyo Electron Limited and Canon Kabushiki Kaisha.

At Tokyo Electron Limited, Ohmi's expertise was invaluable in the development of cutting-edge technologies related to semiconductor manufacturing. His contributions in this field have had a profound impact on the efficiency and performance of semiconductor devices.

During his tenure at Canon Kabushiki Kaisha, Ohmi played a key role in the company's research and development endeavors. His deep understanding of materials science and semiconductor technologies allowed him to contribute to the advancement of Canon's products and patents.

Collaborations:

Throughout his professional journey, Tadahiro Ohmi has collaborated with numerous experts and coworkers. Notable among them are Nobukazu Ikeda and Masaki Hirayama. Through collaborative efforts, these individuals have facilitated interdisciplinary research, pushing the boundaries of innovation and achieving remarkable advancements in their respective fields.

Conclusion:

Tadahiro Ohmi's extensive list of patents and career highlights exemplify his relentless pursuit of innovation and breakthroughs. With his inventive mind and keen focus on improving film surfaces and semiconductor transistors, Ohmi has left an indelible mark on the world of technology. His collaborations and contributions to companies like Tokyo Electron Limited and Canon Kabushiki Kaisha have undoubtedly propelled the organizations to new heights. As Tadahiro Ohmi continues to explore new horizons, the world eagerly anticipates the transformative inventions he may yet unveil.

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