PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Ningbo Richen Electrical Appliance Co., Ltd

USPTO PatentsView assignee record - 13 granted patents across 11 technology areas, active 2016–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F24C (DOMESTIC STOVES OR RANGES  ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION).

Explore the portfolio See the ranking
13
Total patents granted
11
CPC technology areas
9.7
Avg claims per patent
+450%
5-year filing velocity

The verdict

Ningbo holds 13 US patents across 11 technology areas, rank #21,501 of 50,000 tracked assignees.

#21,501
of 50,000 US assignees by volume
Top 60%
by Innovation Score (32.2/100)
9.7
avg claims per patent
+450%
filing velocity, last 5 yrs

Portfolio overview

Ningbo Richen Electrical Appliance Co., Ltd has been granted 13 US utility patents between 2016 and 2025, placing Ningbo Richen Electrical Appliance Co., Ltd at rank #21,501 across all assignees tracked by PlainPatent. This portfolio spans 11 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.7 claims per patent with primary concentration in F24C (DOMESTIC STOVES OR RANGES  ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION). As a Foreign Corporation, Ningbo Richen Electrical Appliance Co., Ltd is one of the more focused assignees in the PatentsView dataset. By volume, Ningbo sits between Nikles TEC Italia S.r.l. (13 patents, rank #21,497) and Nitto Shinko Corporation (13 patents, rank #21,505) - the closest US assignees by grant volume. The composite Innovation Score of 32.2/100 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 11 grants, compared with 2 in the 2015–2019 window, a +450% 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. Ningbo Richen Electrical Appliance Co., Ltd's 9.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 11 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Ningbo Richen Electrical Appliance Co., Ltd against peers pursuing similar technology classes.

Who files at Ningbo's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Ningbo holds 13 patents at rank #21,501, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Ningbo

By rank, the assignees closest to #21,501 in granted patent volume.

Leaders in F24C (Domestic Stoves OR Ranges)

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

Ningbo's Innovation Score vs. every tracked assignee

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

32 Top 60% higher than 40% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). This entry sits in this band. 40–50: 11,491 US assignees (23%). Above this entry. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

0.511.522.533.5 20162019202020212022202320242025 1
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
Ningbo Richen Electrical Appliance Co., Ltd patent grants by year, 2015–2025
Year Patents Granted Share of Period
2016 1 7.7%
2019 1 7.7%
2020 2 15.4%
2021 3 23.1%
2022 1 7.7%
2023 2 15.4%
2024 2 15.4%
2025 1 7.7%

Which technologies does Ningbo Richen Electrical Appliance Co., Ltd patent most?

Top 11 of 11 technology areas

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Focused
Claim Depth Simple
Velocity Accelerating

Where it ranks

Overall rank by patents

#21,501

Across all tracked assignees

Innovation Score

32.2 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Ningbo Richen Electrical Appliance Co., Ltd hold?
Ningbo Richen Electrical Appliance Co., Ltd holds 13 US granted patents filed between 2016 and 2025, spanning 11 technology areas.
What is Ningbo Richen Electrical Appliance Co., Ltd's Innovation Score?
Ningbo Richen Electrical Appliance Co., Ltd has an Innovation Score of 32.2 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Ningbo Richen Electrical Appliance Co., Ltd focus on?
Ningbo Richen Electrical Appliance Co., Ltd's top technology area is F24C (DOMESTIC STOVES OR RANGES  ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION) with 8 patents. The company has filed patents in 11 CPC subclasses total.
Is Ningbo Richen Electrical Appliance Co., Ltd's patent filing rate increasing or decreasing?
Ningbo Richen Electrical Appliance Co., Ltd's recent filing velocity is +450% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for Ningbo Richen Electrical Appliance Co., Ltd's patents?
Ningbo Richen Electrical Appliance Co., Ltd's patents average 9.7 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the Ningbo Richen Electrical Appliance 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.

How to use this portfolio

Ningbo's 13 grants land it in the top 60% 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 - Ningbo ranks #21,501 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in F24C - see who else leads that technology area. F24C 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.

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

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.