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

According to USPTO PatentsView (2015–2025 granted utility patents), Zhejiang Shengli Plastic Co., Ltd. ranks #44,240 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 Shengli Plastic Co., Ltd. hold?

Zhejiang Shengli Plastic Co., Ltd. holds 6 US utility patents granted between 2017 and 2024, spanning 0 technology areas.

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

Zhejiang Shengli Plastic Co., Ltd. has an Innovation Score of 10.7 out of 100 (2nd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Zhejiang Shengli Plastic Co., Ltd. focus on?

Zhejiang Shengli Plastic Co., Ltd. holds grants across 0 technology areas classified under the Cooperative Patent Classification system.

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

Zhejiang Shengli Plastic Co., Ltd.'s recent grant velocity is -80% 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 Shengli Plastic Co., Ltd.'s patents?

Zhejiang Shengli Plastic Co., Ltd.'s patents average 1.0 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 Shengli Plastic 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 Shengli Plastic Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 0 technology areas, recorded in grant years 2017–2024. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength.

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Zhejiang ranks #44,240 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 0 technology areas.

#44,240
of 49,997 US assignees by volume: 2nd percentile
by Innovation Score (10.7/100): 1.0
avg claims per patent: -80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R44240 · Foreign Corporation #44,240 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-UNK · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #44,240/49,997
PHOTO-FINISH Zhejiang Haochuan…
CPC-UNK CPC blank
INNOV-LOW 10.7/100
CLAIMS-SPARSE 1.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -80% vel
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Zhejiang Haochuan Rubber & Plastic 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 10.7 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 6.7 pts (63%) Velocity 3.3 pts (31%) Breadth 0.0 pts (0%) Claim depth 0.6 pts (6%)

Qualcomm Incorporated · highest

85
Zhejiang Shengli… · this assignee

11
3D Lighting… · lowest

7

What this shows Zhejiang's Innovation Score is 10.7/100 (2nd 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 1.0 claims/patent is at or below the 8.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Zhejiang's grants concentrate

Zhejiang Shengli Plastic Co., Ltd. is a focused PatentsView assignee: 0 CPC subclasses . Peak complete grant year is 2017 (2 grants) versus a trough of 1 in 2018. By volume, Zhejiang sits between Zhejiang Haochuan Rubber & Plastic Co., Ltd. and Zhongke Jingyuan Electron Limited, Beijing (CN).

Zhejiang's three-year grant acceleration

Zhejiang Shengli Plastic Co., Ltd. shows 1 grants in 2022–2024 against only 2 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Zhejiang Haochuan…

6
Zhejiang Huangma…

6
Zhejiang Medicine

6
Zhejiang Sanyou V…

6
Zhejiang Zuojian…

6
Zhonghao Chenguan…

6
Zhongke Jingyuan…

6
Zhongke Jingyuan…

6
Zhejiang Shengli… ◀

6

What this shows Zhejiang holds 6 patents at rank #44,223, 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 #44,223 in granted patent volume.

Zhejiang's Innovation Score vs. every tracked assignee

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

11 2nd percentile higher than 2% 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 · 2017–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Zhejiang Shengli Plastic Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	2	33.3%
2018	1	16.7%
2019	2	33.3%
2024	1	16.7%

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

Ranked #44,240 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zhejiang Shengli Plastic Co., Ltd. against Zhejiang Haochuan Rubber & Plastic Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 10.7/100 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.