Where does Hangzhou XZB Tech Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hangzhou XZB Tech Co., Ltd ranks #31,867 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 XZB Tech Co., Ltd hold?

Hangzhou XZB Tech Co., Ltd holds 8 US utility patents granted between 2015 and 2019, spanning 9 technology areas.

What is Hangzhou XZB Tech Co., Ltd's Innovation Score?

Hangzhou XZB Tech Co., Ltd has an Innovation Score of 23.0 out of 100 (11th percentile 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 XZB Tech Co., Ltd focus on?

Hangzhou XZB Tech Co., Ltd's top technology area is F01L (Cyclically Operating Valves FOR Machines OR Engines) with 6 patents, ranking #48 of 181 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is Hangzhou XZB Tech Co., Ltd's patent grant rate increasing or decreasing?

Hangzhou XZB Tech 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 Hangzhou XZB Tech Co., Ltd's patents?

Hangzhou XZB Tech Co., Ltd's patents average 8.0 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 Hangzhou XZB Tech 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 XZB Tech Co., Ltd

USPTO PatentsView assignee record - 8 granted patents across 9 technology areas, recorded in grant years 2015–2019. 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: F01L (Cyclically Operating Valves FOR Machines OR Engines).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hangzhou ranks #31,867 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 9 technology areas.

#31,867
of 49,997 US assignees by volume: 11th percentile
by Innovation Score (23.0/100): 8.0
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R31867 · Foreign Corporation #31,867 · 8 grants

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

GRANTS-MICRO 8 grants
MID-PACK #31,867/49,997
PHOTO-FINISH Haiwei Zhlyuan…
CPC-NARROW F01L · 9 areas
INNOV-THIN 23.0/100
CLAIMS-PAR 8.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Haiwei Zhlyuan Technology (Shenzhen)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 Hangzhou’s 23.0 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 7.6 pts (33%) Velocity 0.0 pts (0%) Breadth 10.6 pts (46%) Claim depth 4.8 pts (21%)

Qualcomm Incorporated · highest

85
Hangzhou XZB Tech · this assignee

23
3D Lighting… · lowest

7

What this shows Hangzhou's Innovation Score is 23.0/100 (11th 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 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 8.0 claims/patent is ABOVE the 1.5 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 XZB Tech Co., Ltd is a focused PatentsView assignee: 9 CPC subclasses with 75% of grants classified under F01L (Cyclically Operating Valves FOR Machines OR Engines). Peak complete grant year is 2019 (4 grants) versus a trough of 1 in 2015. By volume, Hangzhou sits between Haiwei Zhlyuan Technology (Shenzhen)Co., Ltd and Hard Metals Australia Pty Limited.

Haiwei Zhlyuan Te…

8
Haldex Brake

8
Hammersmith Nomin…

8
Hangzhou Dana Tec…

8
Hangzhou Yixiang…

8
Hangzhou Yixiang…

8
Hangzhou Youngsun…

8
Hard Metals Austr…

8
Hangzhou XZB Tech ◀

8

What this shows Hangzhou holds 8 patents at rank #31,926, 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 #31,926 in granted patent volume.

Leaders in F01L (Cyclically Operating Valves FOR Machines OR Engines)

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

Hangzhou's Innovation Score vs. every tracked assignee

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

23 11th percentile higher than 11% 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 · 2015–2019

Grants by year

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

View data table

Hangzhou XZB Tech Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	12.5%
2018	3	37.5%
2019	4	50.0%

Which technologies does Hangzhou XZB Tech Co., Ltd patent most?

F01L - Cyclically Operating Valves FOR Machines OR Engines 6

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 3

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 3

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 2

F16H - Gearing 1

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

Y10T - Technical Subjects Covered BY Former US Classification 1

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

Top 9 of 9 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 XZB Tech Co., Ltd's patent record in context - here's where to go next.

Hangzhou XZB Tech Co., Ltd's lead technology class is F01L (Cyclically Operating Valves FOR Machines OR Engines), 75% of its portfolio - see every assignee active in that class. Explore F01L
Ranked #31,867 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hangzhou XZB Tech Co., Ltd against Haiwei Zhlyuan Technology (Shenzhen)Co., Ltd, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 23.0/100 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.