USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Bizen Chemical Co., Ltd.

USPTO PatentsView assignee record - 7 granted patents across 12 technology areas, active 2018–2022. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C07C (ACYCLIC OR CARBOCYCLIC COMPOUNDS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

11.3

Avg claims per patent

-60%

5-year filing velocity

The verdict

Bizen holds 7 US patents across 12 technology areas, rank #34,551 of 50,000 tracked assignees.

#34,551
of 50,000 US assignees by volume: Top 76%
by Innovation Score (27.5/100): 11.3
avg claims per patent: -60%
filing velocity, last 5 yrs

Portfolio overview

Bizen Chemical Co., Ltd. has been granted 7 US utility patents between 2018 and 2022, placing Bizen Chemical Co., Ltd. at rank #34,551 across all assignees tracked by PlainPatent. This portfolio spans 12 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.3 claims per patent with primary concentration in C07C (ACYCLIC OR CARBOCYCLIC COMPOUNDS). As a Foreign Corporation, Bizen Chemical Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Bizen sits between Biotek Environmental Science Ltd (7 patents, rank #34,547) and Black Swan, Llc (7 patents, rank #34,555) - the closest US assignees by grant volume. The composite Innovation Score of 27.5/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 2 grants, compared with 5 in the 2015–2019 window, a -60% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Bizen Chemical Co., Ltd.'s 11.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 12 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Bizen Chemical Co., Ltd. against peers pursuing similar technology classes.

Biotek Environmen…

7
Biotras Holdings

7
Bioz

7
Bittium Wireless…

7
Blac-rac Manufact…

7
Blach Construction

7
Black Duck Softwa…

7
Black Swan

7
Bizen Chemical ◀

7

What this shows Bizen holds 7 patents at rank #34,551, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Bizen

By rank, the assignees closest to #34,551 in granted patent volume.

Leaders in C07C (Acyclic OR Carbocyclic Compounds)

Other assignees with the most granted patents in Bizen's primary technology class.

Bizen's Innovation Score vs. every tracked assignee

Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)

28 Top 76% higher than 24% of 50,000 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2018–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Bizen Chemical Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	14.3%
2019	4	57.1%
2021	1	14.3%
2022	1	14.3%

Which technologies does Bizen Chemical Co., Ltd. patent most?

C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS 6

C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE 3

C11C - FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM 3

C11B - PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES 3

C12Y - ENZYMES 2

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 1

A23L - FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF 1

A61P - SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS 1

A61K - PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES 1

C12N - MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA 1

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1

B01D - SEPARATION 1

Top 12 of 12 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#34,551

Across all tracked assignees

Innovation Score

27.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Bizen Chemical Co., Ltd. hold?

Bizen Chemical Co., Ltd. holds 7 US granted patents filed between 2018 and 2022, spanning 12 technology areas.

What is Bizen Chemical Co., Ltd.'s Innovation Score?

Bizen Chemical Co., Ltd. has an Innovation Score of 27.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Bizen Chemical Co., Ltd. focus on?

Bizen Chemical Co., Ltd.'s top technology area is C07C (ACYCLIC OR CARBOCYCLIC COMPOUNDS) with 6 patents. The company has filed patents in 12 CPC subclasses total.

Is Bizen Chemical Co., Ltd.'s patent filing rate increasing or decreasing?

Bizen Chemical Co., Ltd.'s recent filing velocity is -60% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Bizen Chemical Co., Ltd.'s patents?

Bizen Chemical Co., Ltd.'s patents average 11.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Bizen Chemical Co., Ltd. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

How to use this portfolio

Bizen's 7 grants land it in the top 76% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Bizen ranks #34,551 of 50,000. Top 50 holders
Most of this portfolio concentrates in C07C - see who else leads that technology area. C07C leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.