Where does Heishin Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Heishin Ltd. ranks #13,459 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 Heishin Ltd. hold?

Heishin Ltd. holds 22 US utility patents granted between 2015 and 2025, spanning 12 technology areas.

What is Heishin Ltd.'s Innovation Score?

Heishin Ltd. has an Innovation Score of 31.3 out of 100 (37th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Heishin Ltd.'s patent grant rate increasing or decreasing?

Heishin Ltd.'s recent grant velocity is -64% 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 Heishin Ltd.'s patents?

Heishin Ltd.'s patents average 8.1 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 Heishin 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

Heishin Ltd.

Q: What technology areas does Heishin Ltd. focus on?

Heishin Ltd.'s top technology area is F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps) with 15 patents, ranking #42 of 587 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

USPTO PatentsView assignee record - 22 granted patents across 12 technology areas, recorded in grant years 2015–2025. 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: F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Heishin ranks #13,459 of 49,997 tracked US assignees by granted-patent volume, with 22 patents across 12 technology areas.

#13,459
of 49,997 US assignees by volume: 37th percentile
by Innovation Score (31.3/100): 8.1
avg claims per patent: -64%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R13459 · Foreign Corporation #13,459 · 22 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 22 grants
MID-PACK #13,459/49,997
PHOTO-FINISH Guangzhou Institutes…
CPC-FOCUS F04C · 12 areas
INNOV-THIN 31.3/100
CLAIMS-PAR 8.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -64% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences (±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 Heishin’s 31.3 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 10.8 pts (35%) Velocity 3.3 pts (11%) Breadth 12.2 pts (39%) Claim depth 4.9 pts (16%)

Qualcomm Incorporated · highest

85
Heishin · this assignee

31
3D Lighting… · lowest

7

What this shows Heishin's Innovation Score is 31.3/100 (37th 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 Heishin?

Each dot is one of Heishin’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). Heishin’s own 8.1 claims/patent is at or below the 12.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Heishin's grants concentrate

Heishin Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 68.2% of grants classified under F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps). Peak complete grant year is 2019 (7 grants) versus a trough of 1 in 2015. By volume, Heishin sits between Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences and Hochland SE.

Heishin's three-year grant acceleration

Heishin Ltd. shows 4 grants in 2022–2024 against only 8 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.

Guangzhou Institu…

22
Hangzhou Chipjet…

22
HCL Italy S p A

22
Hefei BOE Display…

22
Hgst

22
Hioki Denki

22
Hisense Ronshen (…

22
Hochland SE

22
Heishin ◀

22

What this shows Heishin holds 22 patents at rank #13,453, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Heishin

By rank, the assignees closest to #13,453 in granted patent volume.

Leaders in F04C (Rotary-piston)

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

Heishin's Innovation Score vs. every tracked assignee

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

31 37th percentile higher than 37% 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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Heishin Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	4.5%
2016	1	4.5%
2017	1	4.5%
2018	4	18.2%
2019	7	31.8%
2021	1	4.5%
2022	2	9.1%
2023	1	4.5%
2024	1	4.5%
2025partial year	3	13.6%

Which technologies does Heishin Ltd. patent most?

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 15

B05C - Apparatus FOR Applying Fluent Materials TO Surfaces, IN General 7

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 4

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 2

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

F04D - Non-positive-displacement Pumps 1

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 1

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 1

B29B - Preparation OR Pretreatment OF THE Material TO BE SHAPED; Making Granules OR PREFORMS; Recovery OF Plastics OR Other Constituents OF Waste Material Containing Plastics 1

B41J - TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors 1

F05C - Indexing Scheme Relating TO Materials, Material Properties OR Material Characteristics FOR Machines, Engines OR Pumps Other Than Non-positive-displacement Machines OR Engines 1

F01C - Rotary-piston OR Oscillating-piston Machines OR Engines 1

Top 12 of 12 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

Heishin Ltd.'s patent record in context - here's where to go next.

Heishin Ltd.'s lead technology class is F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps), 68.2% of its portfolio - see every assignee active in that class. Explore F04C
Ranked #13,459 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Heishin Ltd. against Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 31.3/100 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.