Where does Wanhua Chemical (NINGBO) Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Wanhua Chemical (NINGBO) Co., Ltd. ranks #19,341 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 Wanhua Chemical (NINGBO) Co., Ltd. hold?

Wanhua Chemical (NINGBO) Co., Ltd. holds 15 US utility patents granted between 2016 and 2025, spanning 20 technology areas.

What is Wanhua Chemical (NINGBO) Co., Ltd.'s Innovation Score?

Wanhua Chemical (NINGBO) Co., Ltd. has an Innovation Score of 54.4 out of 100 (top 8% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Wanhua Chemical (NINGBO) Co., Ltd.'s patent grant rate increasing or decreasing?

Wanhua Chemical (NINGBO) Co., Ltd.'s recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Wanhua Chemical (NINGBO) Co., Ltd.'s patents?

Wanhua Chemical (NINGBO) Co., Ltd.'s patents average 15.0 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 Wanhua Chemical (NINGBO) 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

Wanhua Chemical (NINGBO) Co., Ltd.

Q: What technology areas does Wanhua Chemical (NINGBO) Co., Ltd. focus on?

Wanhua Chemical (NINGBO) Co., Ltd.'s top technology area is C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds) with 9 patents, ranking #361 of 1,741 assignees active in that subclass. Grants appear in 20 CPC subclasses total.

USPTO PatentsView assignee record - 15 granted patents across 20 technology areas, recorded in grant years 2016–2025. 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: C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Wanhua ranks #19,341 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 20 technology areas.

#19,341
of 49,997 US assignees by volume: Top 8%
by Innovation Score (54.4/100): 15.0
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R19341 · Foreign Corporation #19,341 · 15 grants

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

GRANTS-MICRO 15 grants
MID-PACK #19,341/49,997
PHOTO-FINISH Virginia Innovation…
CPC-FOCUS C08G · 20 areas
INNOV-PAR 54.4/100
CLAIMS-RICH 15.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Virginia Innovation Sciences, Inc (±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 Wanhua’s 54.4 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 9.6 pts (18%) Velocity 20.0 pts (37%) Breadth 15.8 pts (29%) Claim depth 9.0 pts (17%)

Qualcomm Incorporated · highest

85
Wanhua Chemical… · this assignee

54
3D Lighting… · lowest

7

What this shows Wanhua's Innovation Score is 54.4/100 (top 8% 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 Wanhua?

Each dot is one of Wanhua’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). Wanhua’s own 15.0 claims/patent is at or below the 16.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Wanhua's grants concentrate

Wanhua Chemical (NINGBO) Co., Ltd. is a focused PatentsView assignee: 20 CPC subclasses with 60% of grants classified under C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds). Peak complete grant year is 2017 (3 grants) versus a trough of 1 in 2016. By volume, Wanhua sits between Virginia Innovation Sciences, Inc and Wacker Nueson Production Americas LLC.

Wanhua's three-year grant acceleration

Wanhua Chemical (NINGBO) Co., Ltd. shows 5 grants in 2022–2024 against only 1 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.

Virginia Innovati…

15
Vistadeltek

15
Vita Inclinata IP…

15
Votiro Cybersec

15
Welead Infrastruc…

15
Wenzhou Medical U…

15
WMF

15
Wacker Nueson Pro…

15
Wanhua Chemical (… ◀

15

What this shows Wanhua holds 15 patents at rank #19,334, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Wanhua

By rank, the assignees closest to #19,334 in granted patent volume.

Leaders in C08G (Macromolecular Compounds Obtained Otherwise Than BY React…)

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

Wanhua's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% 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 · 2016–2025

Grants by year

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

View data table

Wanhua Chemical (NINGBO) Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	6.7%
2017	3	20.0%
2019	1	6.7%
2023	2	13.3%
2024	3	20.0%
2025partial year	5	33.3%

Which technologies does Wanhua Chemical (NINGBO) Co., Ltd. patent most?

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 9

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 4

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 4

C08L - Compositions OF Macromolecular Compounds 4

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 3

C07C - Acyclic OR Carbocyclic Compounds 2

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 2

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 2

F22B - Methods OF Steam GENERATION; Steam Boilers 1

C07D - Heterocyclic Compounds 1

A61Q - Specific USE OF Cosmetics OR Similar Toiletry Preparations 1

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 1

F28C - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media Come Into Direct Contact Without Chemical Interaction 1

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 1

B01D - Separation 1

Top 15 of 20 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

Wanhua Chemical (NINGBO) Co., Ltd.'s patent record in context - here's where to go next.

Wanhua Chemical (NINGBO) Co., Ltd.'s lead technology class is C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds), 60% of its portfolio - see every assignee active in that class. Explore C08G
Ranked #19,341 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Wanhua Chemical (NINGBO) Co., Ltd. against Virginia Innovation Sciences, Inc, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 54.4/100 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.