USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Yonwoo Co., Ltd.

USPTO PatentsView assignee record - 173 granted patents across 16 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A45D (HAIRDRESSING OR SHAVING EQUIPMENT ; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING).

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

Explore the portfolio See the ranking

173

Total patents granted

CPC technology areas

3.7

Avg claims per patent

-14%

5-year filing velocity

The verdict

Yonwoo holds 173 US patents across 16 technology areas, rank #2,272 of 50,000 tracked assignees.

#2,272
of 50,000 US assignees by volume: Top 42%
by Innovation Score (38.1/100): 3.7
avg claims per patent: -14%
filing velocity, last 5 yrs

Portfolio overview

Yonwoo Co., Ltd. has been granted 173 US utility patents between 2015 and 2025, placing Yonwoo Co., Ltd. at rank #2,272 across all assignees tracked by PlainPatent. This portfolio spans 16 distinct Cooperative Patent Classification (CPC) subclasses, averaging 3.7 claims per patent with primary concentration in A45D (HAIRDRESSING OR SHAVING EQUIPMENT ; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING). As a Foreign Corporation, Yonwoo Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Yonwoo sits between Luxtera, Inc. (173 patents, rank #2,268) and Cryptography Research, Inc. (172 patents, rank #2,276) - the closest US assignees by grant volume. The composite Innovation Score of 38.1/100 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 80 grants, compared with 93 in the 2015–2019 window, a -14% 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. Yonwoo Co., Ltd.'s 3.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 16 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Yonwoo Co., Ltd. against peers pursuing similar technology classes.

Luxtera

173
Ossia

173
The Government of…

173
Universal Lighting

173
Yonwoo ◀

173
AGS

172
Aeva

172
Cataler

172
Cryptography Rese…

172

What this shows Yonwoo holds 173 patents at rank #2,272, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Yonwoo

By rank, the assignees closest to #2,272 in granted patent volume.

Leaders in A45D (Hairdressing OR Shaving Equipment)

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

Yonwoo's Innovation Score vs. every tracked assignee

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

38 Top 42% higher than 58% 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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Yonwoo Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	16	9.2%
2016	18	10.4%
2017	21	12.1%
2018	23	13.3%
2019	15	8.7%
2020	24	13.9%
2021	16	9.2%
2022	5	2.9%
2023	13	7.5%
2024	14	8.1%
2025	8	4.6%

Which technologies does Yonwoo Co., Ltd. patent most?

A45D - HAIRDRESSING OR SHAVING EQUIPMENT ; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING 61

B05B - SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 50

B65D - CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES 39

B01L - CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE 4

G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME 4

F16F - SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION 3

F04B - POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 2

A61M - DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY ; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY ; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR 2

B05C - APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL 1

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 1

A46B - BRUSHES 1

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 1

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 1

A24F - SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES 1

A47J - KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES 1

Top 15 of 16 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#2,272

Across all tracked assignees

Innovation Score

38.1 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 Yonwoo Co., Ltd. hold?

Yonwoo Co., Ltd. holds 173 US granted patents filed between 2015 and 2025, spanning 16 technology areas.

What is Yonwoo Co., Ltd.'s Innovation Score?

Yonwoo Co., Ltd. has an Innovation Score of 38.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Yonwoo Co., Ltd. focus on?

Yonwoo Co., Ltd.'s top technology area is A45D (HAIRDRESSING OR SHAVING EQUIPMENT ; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING) with 61 patents. The company has filed patents in 16 CPC subclasses total.

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

Yonwoo Co., Ltd.'s recent filing velocity is -14% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

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

Yonwoo Co., Ltd.'s patents average 3.7 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Yonwoo 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

Yonwoo's 173 grants land it in the top 42% 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 - Yonwoo ranks #2,272 of 50,000. Top 50 holders
Most of this portfolio concentrates in A45D - see who else leads that technology area. A45D 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.