USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kyowa Chemical Industry Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 13 technology areas, active 2016–2021. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C01F (COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

9.2

Avg claims per patent

-80%

5-year filing velocity

The verdict

Kyowa holds 6 US patents across 13 technology areas, rank #41,221 of 50,000 tracked assignees.

#41,221
of 50,000 US assignees by volume: Top 84%
by Innovation Score (25.0/100): 9.2
avg claims per patent: -80%
filing velocity, last 5 yrs

Portfolio overview

Kyowa Chemical Industry Co., Ltd. has been granted 6 US utility patents between 2016 and 2021, placing Kyowa Chemical Industry Co., Ltd. at rank #41,221 across all assignees tracked by PlainPatent. This portfolio spans 13 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.2 claims per patent with primary concentration in C01F (COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS). As a Foreign Corporation, Kyowa Chemical Industry Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Kyowa sits between Kuraray Chemical Co., Ltd. (6 patents, rank #41,217) and Kalibrate Technologies Limited (6 patents, rank #41,225) - the closest US assignees by grant volume. The composite Innovation Score of 25.0/100 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 1 grants, compared with 5 in the 2015–2019 window, a -80% 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. Kyowa Chemical Industry Co., Ltd.'s 9.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 13 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Kyowa Chemical Industry Co., Ltd. against peers pursuing similar technology classes.

Kuraray Chemical

6
Kusumoto Chemicals

6
KWIK LOK

6
Kyocera OY

6
Kyowa Leather Clo…

6
Kabbage

6
Kalivir Immunothe…

6
Kalibrate

6
Kyowa Chemical In… ◀

6

What this shows Kyowa holds 6 patents at rank #41,221, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kyowa

By rank, the assignees closest to #41,221 in granted patent volume.

Leaders in C01F (Compounds OF THE Metals Beryllium)

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

Kyowa's Innovation Score vs. every tracked assignee

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

25 Top 84% higher than 16% 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 · 2016–2021

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Kyowa Chemical Industry Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	3	50.0%
2018	1	16.7%
2019	1	16.7%
2021	1	16.7%

Which technologies does Kyowa Chemical Industry Co., Ltd. patent most?

C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 6

C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS 5

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 4

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 4

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 1

C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS 1

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 1

C09C - TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS 1

B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES 1

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

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 1

C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 1

C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 1

Top 13 of 13 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#41,221

Across all tracked assignees

Innovation Score

25.0 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 Kyowa Chemical Industry Co., Ltd. hold?

Kyowa Chemical Industry Co., Ltd. holds 6 US granted patents filed between 2016 and 2021, spanning 13 technology areas.

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

Kyowa Chemical Industry Co., Ltd. has an Innovation Score of 25.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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

Kyowa Chemical Industry Co., Ltd.'s top technology area is C01F (COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS) with 6 patents. The company has filed patents in 13 CPC subclasses total.

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

Kyowa Chemical Industry Co., Ltd.'s recent filing velocity is -80% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

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

Kyowa Chemical Industry Co., Ltd.'s patents average 9.2 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Kyowa Chemical Industry 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

Kyowa's 6 grants land it in the top 84% 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 - Kyowa ranks #41,221 of 50,000. Top 50 holders
Most of this portfolio concentrates in C01F - see who else leads that technology area. C01F 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.