Where does Wuhan Keda Marble Protective Materials Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Wuhan Keda Marble Protective Materials Co., Ltd. ranks #44,124 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 Wuhan Keda Marble Protective Materials Co., Ltd. hold?

Wuhan Keda Marble Protective Materials Co., Ltd. holds 6 US utility patents granted between 2015 and 2018, spanning 4 technology areas.

What is Wuhan Keda Marble Protective Materials Co., Ltd.'s Innovation Score?

Wuhan Keda Marble Protective Materials Co., Ltd. has an Innovation Score of 19.7 out of 100 (6th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Wuhan Keda Marble Protective Materials Co., Ltd.'s patent grant rate increasing or decreasing?

Wuhan Keda Marble Protective Materials Co., Ltd.'s recent grant velocity is -100% 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 Wuhan Keda Marble Protective Materials Co., Ltd.'s patents?

Wuhan Keda Marble Protective Materials Co., Ltd.'s patents average 9.8 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Wuhan Keda Marble Protective Materials Co., Ltd.

Q: What technology areas does Wuhan Keda Marble Protective Materials Co., Ltd. focus on?

Wuhan Keda Marble Protective Materials Co., Ltd.'s top technology area is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients) with 5 patents, ranking #547 of 1,963 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

Q: How is the Wuhan Keda Marble Protective Materials 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 PatentsView assignee record - 6 granted patents across 4 technology areas, recorded in grant years 2015–2018. 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: C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Wuhan ranks #44,124 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 4 technology areas.

#44,124
of 49,997 US assignees by volume: 6th percentile
by Innovation Score (19.7/100): 9.8
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R44124 · Foreign Corporation #44,124 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #44,124/49,997
PHOTO-FINISH Worgas Bruciatori S…
CPC-NARROW C08K · 4 areas
INNOV-LOW 19.7/100
CLAIMS-PAR 9.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Worgas Bruciatori S.R.L. (±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 Wuhan’s 19.7 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 6.7 pts (34%) Velocity 0.0 pts (0%) Breadth 7.1 pts (36%) Claim depth 5.9 pts (30%)

Qualcomm Incorporated · highest

85
Wuhan Keda Marble… · this assignee

20
3D Lighting… · lowest

7

What this shows Wuhan's Innovation Score is 19.7/100 (6th 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 Wuhan?

Each dot is one of Wuhan’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). Wuhan’s own 9.8 claims/patent is at or below the 11.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Wuhan's grants concentrate

Wuhan Keda Marble Protective Materials Co., Ltd. is a focused PatentsView assignee: 4 CPC subclasses with 83.3% of grants classified under C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients). Peak complete grant year is 2016 (3 grants) versus a trough of 1 in 2018. By volume, Wuhan sits between Worgas Bruciatori S.R.L. and Wyss Center FOR BIO AND Neuro Engineering.

Worgas Bruciatori…

6
Worldmate

6
Wota

6
Wuhan Changsheng…

6
Wuhan Research In…

6
Wulftec Internati…

6
Wuxi Xivi Science…

6
Wyss Center FOR B…

6
Wuhan Keda Marble… ◀

6

What this shows Wuhan holds 6 patents at rank #44,026, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Wuhan

By rank, the assignees closest to #44,026 in granted patent volume.

Leaders in C08K (Use of inorganic or non-macromolecular organic substances…)

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

Wuhan's Innovation Score vs. every tracked assignee

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

20 6th percentile higher than 6% 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 · 2015–2018

Grants by year

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

View data table

Wuhan Keda Marble Protective Materials Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	33.3%
2016	3	50.0%
2018	1	16.7%

Which technologies does Wuhan Keda Marble Protective Materials Co., Ltd. patent most?

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 5

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 4

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 3

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 2

Top 4 of 4 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

Wuhan Keda Marble Protective Materials Co., Ltd.'s patent record in context - here's where to go next.

Wuhan Keda Marble Protective Materials Co., Ltd.'s lead technology class is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients), 83.3% of its portfolio - see every assignee active in that class. Explore C08K
Ranked #44,124 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Wuhan Keda Marble Protective Materials Co., Ltd. against Worgas Bruciatori S.R.L., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 19.7/100 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.