Where does ZiLift Holdings, Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), ZiLift Holdings, Limited ranks #30,688 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 ZiLift Holdings, Limited hold?

ZiLift Holdings, Limited holds 9 US utility patents granted between 2016 and 2022, spanning 7 technology areas.

What is ZiLift Holdings, Limited's Innovation Score?

ZiLift Holdings, Limited has an Innovation Score of 32.0 out of 100 (40th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is ZiLift Holdings, Limited's patent grant rate increasing or decreasing?

ZiLift Holdings, Limited's recent grant velocity is +25% 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 ZiLift Holdings, Limited's patents?

ZiLift Holdings, Limited's patents average 21.8 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.

How is the ZiLift Holdings, Limited 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

ZiLift Holdings, Limited

Q: What technology areas does ZiLift Holdings, Limited focus on?

ZiLift Holdings, Limited'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 7 patents, ranking #483 of 1,363 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

USPTO PatentsView assignee record - 9 granted patents across 7 technology areas, recorded in grant years 2016–2022. 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Zilift ranks #30,688 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 7 technology areas.

#30,688
of 49,997 US assignees by volume: 40th percentile
by Innovation Score (32.0/100): 21.8
avg claims per patent: +25%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R30688 · Foreign Corporation #30,688 · 9 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-DENSE · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MICRO 9 grants
MID-PACK #30,688/49,997
PHOTO-FINISH Zhejiang Huahai…
CPC-NARROW E21B · 7 areas
INNOV-THIN 32.0/100
CLAIMS-DENSE 21.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +25% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Zhejiang Huahai LiCheng Pharmaceutical Co., Ltd. (±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 Zilift’s 32.0 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 8.0 pts (25%) Velocity 1.7 pts (5%) Breadth 9.4 pts (29%) Claim depth 13.1 pts (41%)

Qualcomm Incorporated · highest

85
ZiLift Holdings · this assignee

32
3D Lighting… · lowest

7

What this shows Zilift's Innovation Score is 32.0/100 (40th 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 Zilift?

Each dot is one of Zilift’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). Zilift’s own 21.8 claims/patent is ABOVE the 12.6 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Zilift's grants concentrate

ZiLift Holdings, Limited is a focused PatentsView assignee: 7 CPC subclasses with 77.8% 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 2020 (3 grants) versus a trough of 1 in 2016. By volume, Zilift sits between Zhejiang Huahai LiCheng Pharmaceutical Co., Ltd. and Zoetis LLC.

Zilift's three-year grant acceleration

ZiLift Holdings, Limited shows 1 grants in 2022–2024 against only 4 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.

Zhejiang Huahai L…

9
Zhejiang Yinhong…

9
Zhongshan Ekar Up…

9
Zhongshan Gaoneng…

9
Ziteo

9
Zoccam

9
Zodiac Cabin Cont…

9
Zoetis

9
Zilift Holdings ◀

9

What this shows ZiLift holds 9 patents at rank #30,659, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near ZiLift

By rank, the assignees closest to #30,659 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Zilift's Innovation Score vs. every tracked assignee

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

32 40th percentile higher than 40% 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 · 2016–2022

Grants by year

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

View data table

ZiLift Holdings, Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	11.1%
2017	1	11.1%
2018	2	22.2%
2020	3	33.3%
2021	1	11.1%
2022	1	11.1%

Which technologies does ZiLift Holdings, Limited patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 7

H02K - Dynamo-electric Machines 2

F04D - Non-positive-displacement Pumps 2

F16C - SHAFTS; Flexible SHAFTS; Elements OR Crankshaft MECHANISMS; Rotary Bodies Other Than Gearing ELEMENTS; Bearings 1

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 1

Y10T - Technical Subjects Covered BY Former US Classification 1

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 1

Top 7 of 7 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

ZiLift Holdings, Limited's patent record in context - here's where to go next.

ZiLift Holdings, Limited'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), 77.8% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #30,688 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare ZiLift Holdings, Limited against Zhejiang Huahai LiCheng Pharmaceutical Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 32.0/100 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.