Where does Hangzhou Zero Zero Technology Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hangzhou Zero Zero Technology Co., Ltd. ranks #8,041 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 Hangzhou Zero Zero Technology Co., Ltd. hold?

Hangzhou Zero Zero Technology Co., Ltd. holds 40 US utility patents granted between 2018 and 2024, spanning 18 technology areas.

What is Hangzhou Zero Zero Technology Co., Ltd.'s Innovation Score?

Hangzhou Zero Zero Technology Co., Ltd. has an Innovation Score of 42.9 out of 100 (top 29% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hangzhou Zero Zero Technology Co., Ltd. focus on?

Hangzhou Zero Zero Technology Co., Ltd.'s top technology area is B64U (Unmanned Aerial Vehicles [UAV]; Equipment Therefor) with 37 patents, ranking #27 of 545 assignees active in that subclass. Grants appear in 18 CPC subclasses total.

Is Hangzhou Zero Zero Technology Co., Ltd.'s patent grant rate increasing or decreasing?

Hangzhou Zero Zero Technology Co., Ltd.'s recent grant velocity is +108% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Hangzhou Zero Zero Technology Co., Ltd.'s patents?

Hangzhou Zero Zero Technology Co., Ltd.'s patents average 18.6 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 Hangzhou Zero Zero Technology 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

Hangzhou Zero Zero Technology Co., Ltd.

USPTO PatentsView assignee record - 40 granted patents across 18 technology areas, recorded in grant years 2018–2024. 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: B64U (Unmanned Aerial Vehicles [UAV]; Equipment Therefor).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hangzhou ranks #8,041 of 49,997 tracked US assignees by granted-patent volume, with 40 patents across 18 technology areas.

#8,041
of 49,997 US assignees by volume: Top 29%
by Innovation Score (42.9/100): 18.6
avg claims per patent: +108%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8041 · Foreign Corporation #8,041 · 40 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 40 grants
UPPER-Q #8,041/49,997
PHOTO-FINISH Green Cross
CPC-FOCUS B64U · 18 areas
INNOV-PAR 42.9/100
CLAIMS-RICH 18.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +108% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Green Cross Corporation (±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 Hangzhou’s 42.9 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 12.8 pts (30%) Velocity 3.9 pts (9%) Breadth 15.0 pts (35%) Claim depth 11.2 pts (26%)

Qualcomm Incorporated · highest

85
Acciona Windpower · near

43
Biomet Sports Medicine · near

43
Black Hills IP… · near

43
GS Caltex · near

43
Hangzhou Zero Zero… · this assignee

43
3D Lighting… · lowest

7

What this shows Hangzhou's Innovation Score is 42.9/100 (top 29% 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 Hangzhou?

Each dot is one of Hangzhou’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). Hangzhou’s own 18.6 claims/patent is ABOVE the 14.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Hangzhou's grants concentrate

Hangzhou Zero Zero Technology Co., Ltd. is a focused PatentsView assignee: 18 CPC subclasses with 92.5% of grants classified under B64U (Unmanned Aerial Vehicles [UAV]; Equipment Therefor). Peak complete grant year is 2019 (8 grants) versus a trough of 3 in 2024. By volume, Hangzhou sits between Guardian Europe S.A.R.L. and Hunan University.

Hangzhou's three-year grant acceleration

From 2019–2021 to 2022–2024, Hangzhou Zero Zero Technology Co., Ltd. moved from 22 to 13 grants (0.59x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Guardian Europe R…

40
Gunze

40
Green Cross

40
Guangdong Midea W…

40
Heraeus Noblelight

40
HZO

40
Holland

40
Hunan University

40
Hangzhou Zero Zer… ◀

40

What this shows Hangzhou holds 40 patents at rank #8,041, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hangzhou

By rank, the assignees closest to #8,041 in granted patent volume.

Leaders in B64U (Unmanned Aerial Vehicles [UAV])

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hangzhou, neither rank-band nor same-CPC leaders (those blocks stay above). In B64U (Unmanned Aerial Vehicles [UAV]), Hangzhou ranks #27 of 545 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (43 here).

Acciona Windpower, S.A. 43 Black Hills IP Holdings, LLC 43 GS Caltex Corporation 43 Biomet Sports Medicine, LLC 43

Hangzhou's Innovation Score vs. every tracked assignee

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

43 Top 29% higher than 71% 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 · 2018–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Hangzhou Zero Zero Technology Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	5	12.5%
2019	8	20.0%
2020	6	15.0%
2021	8	20.0%
2022	6	15.0%
2023	4	10.0%
2024	3	7.5%

Which technologies does Hangzhou Zero Zero Technology Co., Ltd. patent most?

B64U - Unmanned Aerial Vehicles [UAV]; Equipment Therefor 37

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 26

B64C - AEROPLANES; Helicopters 16

H04N - Pictorial Communication, e.g. Television 13

Y02T - Climate Change Mitigation Technologies Related TO Transportation 7

G06F - Electric Digital Data Processing 7

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 5

G06V - Image OR Video Recognition OR Understanding 4

G06T - Image Data Processing OR Generation, IN General 3

B64D - Equipment FOR Fitting IN OR TO AIRCRAFT; Flight SUITS; PARACHUTES; Arrangement OR Mounting OF Power Plants OR Propulsion Transmissions IN Aircraft 3

G08G - Traffic Control Systems 2

G01C - Measuring Distances, Levels OR BEARINGS; SURVEYING; NAVIGATION; Gyroscopic INSTRUMENTS; Photogrammetry OR Videogrammetry 2

G03B - Apparatus OR Arrangements FOR Taking Photographs OR FOR Projecting OR Viewing THEM; Apparatus OR Arrangements Employing Analogous Techniques Using Waves Other Than Optical WAVES; Accessories Therefor 2

G02B - Optical Elements, Systems OR Apparatus 1

H02K - Dynamo-electric Machines 1

Top 15 of 18 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

Hangzhou Zero Zero Technology Co., Ltd.'s patent record in context - here's where to go next.

Hangzhou Zero Zero Technology Co., Ltd.'s lead technology class is B64U (Unmanned Aerial Vehicles [UAV]; Equipment Therefor), 92.5% of its portfolio - see every assignee active in that class. Explore B64U
Ranked #8,041 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hangzhou Zero Zero Technology Co., Ltd. against Guardian Europe S.A.R.L., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 42.9/100 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.