Where does Hangzhou Sanhua Research Institute Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hangzhou Sanhua Research Institute Co., Ltd. ranks #4,561 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 Sanhua Research Institute Co., Ltd. hold?

Hangzhou Sanhua Research Institute Co., Ltd. holds 77 US utility patents granted between 2016 and 2025, spanning 48 technology areas.

What is Hangzhou Sanhua Research Institute Co., Ltd.'s Innovation Score?

Hangzhou Sanhua Research Institute Co., Ltd. has an Innovation Score of 55.6 out of 100 (top 7% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hangzhou Sanhua Research Institute Co., Ltd.'s patent grant rate increasing or decreasing?

Hangzhou Sanhua Research Institute Co., Ltd.'s recent grant velocity is +62% 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 Sanhua Research Institute Co., Ltd.'s patents?

Hangzhou Sanhua Research Institute Co., Ltd.'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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hangzhou Sanhua Research Institute Co., Ltd.

Q: What technology areas does Hangzhou Sanhua Research Institute Co., Ltd. focus on?

Hangzhou Sanhua Research Institute Co., Ltd.'s top technology area is B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles) with 29 patents, ranking #24 of 379 assignees active in that subclass. Grants appear in 48 CPC subclasses total.

Q: How is the Hangzhou Sanhua Research Institute 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 PatentsView assignee record - 77 granted patents across 48 technology areas, recorded in grant years 2016–2025. 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: B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hangzhou ranks #4,561 of 49,997 tracked US assignees by granted-patent volume, with 77 patents across 48 technology areas.

#4,561
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.6/100): 14.4
avg claims per patent: +62%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4561 · Foreign Corporation #4,561 · 77 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 77 grants
TOP-DECILE #4,561/49,997
PHOTO-FINISH Emulate
CPC-WIDE B60H · 48 areas
INNOV-PAR 55.6/100
CLAIMS-RICH 14.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +62% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Emulate, Inc. (±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 55.6 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 15.0 pts (27%) Velocity 7.4 pts (13%) Breadth 24.5 pts (44%) Claim depth 8.6 pts (15%)

Qualcomm Incorporated · highest

85
Brp-rotax & KG · near

56
Faurecia Innenraum… · near

56
Hangzhou Sanhua… · this assignee

56
Institut Pasteur · near

56
Tyco UK · near

56
3D Lighting… · lowest

7

What this shows Hangzhou's Innovation Score is 55.6/100 (top 7% 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 14.4 claims/patent is at or below the 16.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Hangzhou's grants concentrate

Hangzhou Sanhua Research Institute Co., Ltd. is a focused PatentsView assignee: 48 CPC subclasses with 37.7% of grants classified under B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles). Peak complete grant year is 2019 (13 grants) versus a trough of 1 in 2018. By volume, Hangzhou sits between Emulate, Inc. and J.S.T. MFG. Co., Ltd..

Hangzhou's three-year grant acceleration

From 2019–2021 to 2022–2024, Hangzhou Sanhua Research Institute Co., Ltd. moved from 26 to 29 grants (1.11x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Emulate

77
GAF Energy

77
GE Oil & Gas Pres…

77
GLO AB

77
Hunan Brunp Recyc…

77
Idorsia Pharmaceu…

77
Isis Innovation

77
J S T MFG

77
Hangzhou Sanhua R… ◀

77

What this shows Hangzhou holds 77 patents at rank #4,561, 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 #4,561 in granted patent volume.

Leaders in B60H (Arrangements OF Heating)

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 B60H (Arrangements OF Heating), Hangzhou ranks #24 of 379 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (56 here).

Faurecia Innenraum Systeme GmbH 56 Tyco Electronics UK Ltd 56 Brp-rotax GMBH & Co. KG 56 Institut Pasteur 56

Similar claim depth

Nearest assignees by average claims per patent (14.4 here).

Shandong NEW Beiyang Information Technology Co., Ltd. 14.4 avg ETA SA Manufacture HORLOGÈRE Suisse 14.4 avg Institut National DES Sciences APPLIQUÉES DE Lyon 14.4 avg Qatar University 14.4 avg

Hangzhou's Innovation Score vs. every tracked assignee

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

56 Top 7% higher than 93% 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 · 2016–2025

Grants by year

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

View data table

Hangzhou Sanhua Research Institute Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	5	6.5%
2017	7	9.1%
2018	1	1.3%
2019	13	16.9%
2020	2	2.6%
2021	11	14.3%
2022	7	9.1%
2023	9	11.7%
2024	13	16.9%
2025partial year	9	11.7%

Which technologies does Hangzhou Sanhua Research Institute Co., Ltd. patent most?

B60H - Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles 29

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 25

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 24

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 23

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 10

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 7

H02K - Dynamo-electric Machines 5

Y02T - Climate Change Mitigation Technologies Related TO Transportation 5

B60K - Arrangement OR Mounting OF Propulsion Units OR OF Transmissions IN VEHICLES; Arrangement OR Mounting OF Plural Diverse Prime-movers IN VEHICLES; Auxiliary Drives FOR VEHICLES; Instrumentation OR Dashboards FOR VEHICLES; Arrangements IN Connection With Cooling, AIR Intake, GAS Exhaust OR Fuel Supply 5

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 4

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 4

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 3

F04D - Non-positive-displacement Pumps 3

B23P - Metal-working NOT Otherwise Provided FOR; Combined OPERATIONS; Universal Machine Tools 3

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 3

Top 15 of 48 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 Sanhua Research Institute Co., Ltd.'s patent record in context - here's where to go next.

Hangzhou Sanhua Research Institute Co., Ltd.'s lead technology class is B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles), 37.7% of its portfolio - see every assignee active in that class. Explore B60H
Ranked #4,561 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hangzhou Sanhua Research Institute Co., Ltd. against Emulate, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.6/100 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.