Where does Zhejiang Sanhua Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Zhejiang Sanhua Co., Ltd ranks #22,082 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 Zhejiang Sanhua Co., Ltd hold?

Zhejiang Sanhua Co., Ltd holds 13 US utility patents granted between 2015 and 2019, spanning 6 technology areas.

What is Zhejiang Sanhua Co., Ltd's Innovation Score?

Zhejiang Sanhua Co., Ltd has an Innovation Score of 27.7 out of 100 (25th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Zhejiang Sanhua Co., Ltd's patent grant rate increasing or decreasing?

Zhejiang Sanhua 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 Zhejiang Sanhua Co., Ltd's patents?

Zhejiang Sanhua Co., Ltd's patents average 16.5 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 Zhejiang Sanhua 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

Zhejiang Sanhua Co., Ltd

Q: What technology areas does Zhejiang Sanhua Co., Ltd focus on?

Zhejiang Sanhua Co., Ltd's top technology area is F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems) with 13 patents, ranking #79 of 704 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

USPTO PatentsView assignee record - 13 granted patents across 6 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: F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Zhejiang ranks #22,082 of 49,997 tracked US assignees by granted-patent volume, with 13 patents across 6 technology areas.

#22,082
of 49,997 US assignees by volume: 25th percentile
by Innovation Score (27.7/100): 16.5
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R22082 · Foreign Corporation #22,082 · 13 grants

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

GRANTS-MICRO 13 grants
MID-PACK #22,082/49,997
PHOTO-FINISH Zhejiang FLY CUP
CPC-NARROW F25B · 6 areas
INNOV-THIN 27.7/100
CLAIMS-RICH 16.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Zhejiang FLY CUP 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 Zhejiang’s 27.7 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 9.1 pts (33%) Velocity 0.0 pts (0%) Breadth 8.7 pts (31%) Claim depth 9.9 pts (36%)

Qualcomm Incorporated · highest

85
Zhejiang Sanhua · this assignee

28
3D Lighting… · lowest

7

What this shows Zhejiang's Innovation Score is 27.7/100 (25th 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 Zhejiang?

Each dot is one of Zhejiang’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). Zhejiang’s own 16.5 claims/patent is ABOVE the 9.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Zhejiang's grants concentrate

Zhejiang Sanhua Co., Ltd is a focused PatentsView assignee: 6 CPC subclasses with 100% of grants classified under F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems). Peak complete grant year is 2016 (8 grants) versus a trough of 1 in 2015. By volume, Zhejiang sits between Zhejiang FLY CUP CO.,LTD and Zynerba Pharmaceuticals, Inc..

Zhejiang FLY CUP

13
Zhejiang Hengyi P…

13
Zhejiang Quhua Fl…

13
Zhejiang Sanhua C…

13
Zhuhai Hengqin Su…

13
Zoll Respicardia

13
ZTE Microelectron…

13
Zynerba Pharmaceu…

13
Zhejiang Sanhua ◀

13

What this shows Zhejiang holds 13 patents at rank #22,073, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Zhejiang

By rank, the assignees closest to #22,073 in granted patent volume.

Leaders in F25B (Refrigeration Machines)

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

Zhejiang's Innovation Score vs. every tracked assignee

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

28 25th percentile higher than 25% 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

Zhejiang Sanhua Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	7.7%
2016	8	61.5%
2017	3	23.1%
2019	1	7.7%

Which technologies does Zhejiang Sanhua Co., Ltd patent most?

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 13

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 11

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 9

Y10T - Technical Subjects Covered BY Former US Classification 4

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 1

B01D - Separation 1

Top 6 of 6 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

Zhejiang Sanhua Co., Ltd's patent record in context - here's where to go next.

Zhejiang Sanhua Co., Ltd's lead technology class is F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems), 100% of its portfolio - see every assignee active in that class. Explore F25B
Ranked #22,082 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zhejiang Sanhua Co., Ltd against Zhejiang FLY CUP CO.,LTD, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.7/100 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.