Overall rank by patents
#4,561
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Hangzhou Sanhua Research Institute Co., Ltd.
USPTO PatentsView assignee record — 77 granted patents across 48 technology areas, active 2016–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B60H (ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES).
77
Total patents granted
48
CPC technology areas
14.4
Avg claims per patent
+96%
5-year filing velocity
The verdict
Hangzhou holds 77 US patents across 48 technology areas — rank #4,561 of 50,000 tracked assignees.
- #4,561
- of 50,000 US assignees by volume
- Top 7%
- by Innovation Score (55.6/100)
- 14.4
- avg claims per patent
- +96%
- filing velocity, last 5 yrs
Portfolio overview
HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. has been granted 77 US utility patents between 2016 and 2025, placing HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. at rank #4,561 across all assignees tracked by PlainPatent. This portfolio spans 48 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.4 claims per patent with primary concentration in B60H (ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES). As a Foreign Corporation, HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. is one of the more focused assignees in the PatentsView dataset. The composite Innovation Score of 55.6/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.
Filing cadence tells the strategic story. Between 2020 and 2025 the company received 51 grants, compared with 26 in the 2015–2019 window — a +96% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.
Claim depth and technology breadth together indicate competitive posture. HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.'s 14.4 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 48 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. against peers pursuing similar technology classes.
How does HANGZHOU compare?
Granted US patents 2015–2025 versus the largest corporate holders — this company marked ◀
- Samsung
SAMSUNG ELECTRONICS CO., LTD.
106,890 patents
- International Bus…
International Business Machines Corporation
72,926 patents
- Canon 34,378
Canon Kabushiki Kaisha
34,378 patents
- LG 32,607
LG ELECTRONICS INC.
32,607 patents
- Taiwan Semiconduc… 31,041
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
31,041 patents
- Apple 30,560
Apple Inc.
30,560 patents
- Qualcomm Incorpor… 30,354
QUALCOMM Incorporated
30,354 patents
- Intel 27,498
Intel Corporation
27,498 patents
- Hangzhou Sanhua R… ◀ 77
HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.
77 patents
What this shows HANGZHOU holds 77 patents — placing it at rank #4,561 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.
HANGZHOU's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
56 Top 7% higher than 93% of 50,000 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
| 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% |
| 2025 | 9 | 11.7% |
Which technologies does HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. patent most?
Top 15 of 48 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Multi-domain
Claim Depth Standard
Velocity Accelerating
Frequently Asked Questions
How many patents does HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. hold?
HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. holds 77 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
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. The company has filed patents in 48 CPC subclasses total.
Is HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.'s patent filing rate increasing or decreasing?
HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.'s recent filing velocity is +96% compared to the prior five-year period. This indicates accelerating innovation.
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 falls within the standard range, providing solid legal coverage.
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.
Learn More
How to use this portfolio
Hangzhou's 77 grants land it in the top 7% by Innovation Score — but volume alone doesn't tell you where the strength sits.
- Read that count against the largest US assignees before treating it as dominance — Hangzhou ranks #4,561 of 50,000. Top 50 holders
- Most of this portfolio concentrates in B60H — see who else leads that technology area. B60H leaders
- Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works
Patent counts and the Innovation Score measure patenting activity — not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.
Explore the patent dataset
B60H technology
HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.'s primary CPC class — all holders and yearly trends
Top 50 patent holders
See where HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. ranks among the largest US patent assignees
All technology classes
Browse every CPC technology area by patent activity
How the score works
The four dimensions behind the Innovation Score
Related
Data sourced from USPTO PatentsView — official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial
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
