Nobuyuki Ohba

This inventor holds 6 USPTO granted patents. Top assignees: Ihara Chemical Industry Co., Ltd., Kumiai Chemical Industry Co., Ltd.. Active years: 1991-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobuyuki Ohba. Retrieved from https://idiyas.com/inventor/nobuyuki-ohba-v8fzjid8

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 6.8

ph-index = 3

Forward Citations = 80(Granted Patents)

Location History:

Iwata, JP (1991)
Shizuoka, JP (1994 - 1998)
Iwata-gun, JP (1997 - 1999)

Company Filing History:

6 out of 211

Ihara Chemical Industry Co., Ltd.

patents

6 out of 216

Kumiai Chemical Industry Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1991-1999

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5877120 - Nicotinic acid derivatives and herbicides (1999-03-02),

2. 5770544 - Condensed heterocyclic derivatives and herbicides (1998-06-23),

3. 5616537 - Condensed heterocyclic derivatives and herbicides (1997-04-01),

4. 5312929 - 2-oxo-3-pyrroline derivatives, process for their production and (1994-05-17),

5. 5076834 - 1,2,5,6-Tetrahydropyridine-2-one compounds which are useful herbicides (1991-12-31),

6. 5006157 - Pyrrolin-2-one compounds which are useful as herbicides (1991-04-09),

Title: Nobuyuki Ohba: Innovator in Herbicide Development

Introduction

Nobuyuki Ohba is a prominent inventor based in Shizuoka, Japan. He has made significant contributions to the field of herbicide development, holding a total of 6 patents. His work focuses on creating effective solutions for agricultural challenges, particularly in weed management.

Latest Patents

Ohba's latest patents include innovations in nicotinic acid derivatives and condensed heterocyclic derivatives. These inventions are designed to enhance herbicidal activities against both gramineous and non-gramineous weeds. The condensed heterocyclic derivative he developed is particularly effective when used for paddy field treatment, upland soil treatment, and foliage treatment. This innovation demonstrates excellent herbicidal activity without adversely affecting crop plants.

Career Highlights

Throughout his career, Nobuyuki Ohba has worked with notable companies such as Kumiai Chemical Industry Co., Ltd. and Ihara Chemical Industry Co., Ltd. His experience in these organizations has allowed him to refine his expertise in chemical innovations and agricultural applications.

Collaborations

Ohba has collaborated with esteemed colleagues, including Shigehiko Tachikawa and Sumio Yokota. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Nobuyuki Ohba's contributions to herbicide development highlight his innovative spirit and dedication to improving agricultural practices. His patents reflect a commitment to creating effective solutions for weed management, benefiting farmers and the agricultural industry as a whole.

Profile summary based on public USPTO records.

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]