Where does Beijing Huamei Inc. Cnpc rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Beijing Huamei Inc. Cnpc ranks #45,099 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 Beijing Huamei Inc. Cnpc hold?

Beijing Huamei Inc. Cnpc holds 5 US utility patents granted between 2022 and 2025, spanning 4 technology areas.

What is Beijing Huamei Inc. Cnpc's Innovation Score?

Beijing Huamei Inc. Cnpc has an Innovation Score of 41.9 out of 100 (top 32% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Beijing Huamei Inc. Cnpc's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Beijing Huamei Inc. Cnpc.

What does claim depth mean for Beijing Huamei Inc. Cnpc's patents?

Beijing Huamei Inc. Cnpc's patents average 14.4 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 Beijing Huamei Inc. Cnpc 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

Beijing Huamei Inc. Cnpc

Q: What technology areas does Beijing Huamei Inc. Cnpc focus on?

Beijing Huamei Inc. Cnpc's top technology area is E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells) with 5 patents, ranking #669 of 1,363 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 4 technology areas, recorded in grant years 2022–2025. 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: E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Beijing ranks #45,099 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 4 technology areas.

#45,099
of 49,997 US assignees by volume: Top 32%
by Innovation Score (41.9/100): 14.4
avg claims per patent

USPTO PatentsView assignee plate

Corpus R45099 · Foreign Corporation #45,099 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 5 grants
BOTTOM-DECILE #45,099/49,997
PHOTO-FINISH Beeline Group
CPC-NARROW E21B · 4 areas
INNOV-PAR 41.9/100
CLAIMS-RICH 14.4 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2025 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Beeline Group, LLC (±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 Beijing’s 41.9 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 6.2 pts (15%) Velocity 20.0 pts (48%) Breadth 7.1 pts (17%) Claim depth 8.6 pts (21%)

Qualcomm Incorporated · highest

85
Beijing Huamei Cnpc · this assignee

42
3D Lighting… · lowest

7

What this shows Beijing's Innovation Score is 41.9/100 (top 32% 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 Beijing?

Each dot is one of Beijing’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). Beijing’s own 14.4 claims/patent is ABOVE the 9.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Beijing's grants concentrate

Beijing Huamei Inc. Cnpc is a focused PatentsView assignee: 4 CPC subclasses with 100% of grants classified under E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells). Peak complete grant year is 2023 (2 grants) versus a trough of 1 in 2022. By volume, Beijing sits between Beeline Group, LLC and Beijing Siling Robot Technology Co., Ltd..

Beijing's three-year grant acceleration

Beijing Huamei Inc. Cnpc shows 4 grants in 2022–2024 against only 0 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.

Beeline Group

5
Beeton Dickinson…

5
Beijing CHJ Infor…

5
Beijing Greenvall…

5
Beijing Landwell…

5
Beijing Ruisizhix…

5
Beijing Shuimujin…

5
Beijing Siling Ro…

5
Beijing Huamei Cn… ◀

5

What this shows Beijing holds 5 patents at rank #45,255, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Beijing

By rank, the assignees closest to #45,255 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Beijing's Innovation Score vs. every tracked assignee

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

42 Top 32% higher than 68% 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Beijing Huamei Inc. Cnpc patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	1	20.0%
2023	2	40.0%
2024	1	20.0%
2025partial year	1	20.0%

Which technologies does Beijing Huamei Inc. Cnpc patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 5

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 1

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 1

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 1

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

Beijing Huamei Inc. Cnpc's patent record in context - here's where to go next.

Beijing Huamei Inc. Cnpc's lead technology class is E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells), 100% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #45,099 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Beijing Huamei Inc. Cnpc against Beeline Group, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.9/100 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.