Overall rank by patents
#44,183
Across all tracked assignees
USPTO PatentsView assignee record - 6 granted patents across 5 technology areas, active 2017–2020. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS).
The verdict
Zhejiang holds 6 US patents across 5 technology areas, rank #44,183 of 50,000 tracked assignees.
Zhejiang Kanglaite Group Co., Ltd. has been granted 6 US utility patents between 2017 and 2020, placing Zhejiang Kanglaite Group Co., Ltd. at rank #44,183 across all assignees tracked by PlainPatent. This portfolio spans 5 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.5 claims per patent with primary concentration in A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS). As a Foreign Corporation, Zhejiang Kanglaite Group Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Zhejiang sits between ZEFR, Inc. (6 patents, rank #44,179) and Zhejiang Research Institute OF Chemical Industry Co., Ltd. (6 patents, rank #44,187) - the closest US assignees by grant volume. The composite Innovation Score of 23.3/100 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 1 grants, compared with 5 in the 2015–2019 window, a -80% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Zhejiang Kanglaite Group Co., Ltd.'s 14.5 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 5 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Zhejiang Kanglaite Group Co., Ltd. against peers pursuing similar technology classes.
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
ZEFR, Inc.
6 patents
ZENCOLOR CORPORATION
6 patents
ZENGO LTD
6 patents
ZF Padova S.r.l.
6 patents
ZHEJIANG LINYA CO., LTD.
6 patents
ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.
6 patents
ZHEJIANG RAYTHEON TECHNOLOGY CO., LTD.
6 patents
ZHEJIANG RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD.
6 patents
ZHEJIANG KANGLAITE GROUP CO., LTD.
6 patents
What this shows Zhejiang holds 6 patents at rank #44,183, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.
By rank, the assignees closest to #44,183 in granted patent volume.
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, filing velocity, technology breadth, and claim depth (0–100)
23 Top 88% higher than 12% 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
Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2017 | 2 | 33.3% |
| 2018 | 2 | 33.3% |
| 2019 | 1 | 16.7% |
| 2020 | 1 | 16.7% |
Top 5 of 5 technology areas
Overall rank by patents
#44,183
Across all tracked assignees
23.3 out of 100
How to use this portfolio
Zhejiang's 6 grants land it in the top 88% by Innovation Score, but volume alone doesn't tell you where the strength sits.
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.
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.