Where does Bizen Chemical Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Bizen Chemical Co., Ltd. ranks #34,513 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

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

Bizen Chemical Co., Ltd. holds 7 US utility patents granted 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 (24th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant 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, ranking #724 of 2,691 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

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

Bizen Chemical Co., Ltd.'s recent grant velocity is -60% compared to the prior five-year period (grant years, not application filing dates). Grant 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 an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Bizen Chemical Co., Ltd.

USPTO PatentsView assignee record - 7 granted patents across 12 technology areas, recorded in grant years 2018–2022. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: C07C (Acyclic OR Carbocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Bizen ranks #34,513 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 12 technology areas.

#34,513
of 49,997 US assignees by volume: 24th percentile
by Innovation Score (27.5/100): 11.3
avg claims per patent: -60%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R34513 · Foreign Corporation #34,513 · 7 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 7 grants
MID-PACK #34,513/49,997
PHOTO-FINISH Biotek Environmental…
CPC-FOCUS C07C · 12 areas
INNOV-THIN 27.5/100
CLAIMS-PAR 11.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -60% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Biotek Environmental Science Ltd (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Bizen’s 27.5 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 7.2 pts (26%) Velocity 1.3 pts (5%) Breadth 12.2 pts (44%) Claim depth 6.8 pts (25%)

Qualcomm Incorporated · highest

85
Bizen Chemical · this assignee

28
3D Lighting… · lowest

7

What this shows Bizen's Innovation Score is 27.5/100 (24th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Bizen?

Each dot is one of Bizen’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Bizen’s own 11.3 claims/patent is at or below the 17.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Bizen vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Bizen's grants concentrate

Bizen Chemical Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 85.7% of grants classified under C07C (Acyclic OR Carbocyclic Compounds). Peak complete grant year is 2019 (4 grants) versus a trough of 1 in 2018. By volume, Bizen sits between Biotek Environmental Science Ltd and Black Swan, LLC.

Bizen's three-year grant acceleration

Bizen Chemical Co., Ltd. shows 1 grants in 2022–2024 against only 5 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

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, grant velocity, technology breadth, and claim depth (0–100)

28 24th percentile higher than 24% of 49,997 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

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Bizen Chemical Co., Ltd.'s patent record in context - here's where to go next.

Bizen Chemical Co., Ltd.'s lead technology class is C07C (Acyclic OR Carbocyclic Compounds), 85.7% of its portfolio - see every assignee active in that class. Explore C07C
Ranked #34,513 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Bizen Chemical Co., Ltd. against Biotek Environmental Science Ltd, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.5/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

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

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 by PlainPatent , US Patent Intelligence Editorial Process · 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.