Where does Tung Hing Plastic Manufactory Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tung Hing Plastic Manufactory Limited ranks #11,492 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 Tung Hing Plastic Manufactory Limited hold?

Tung Hing Plastic Manufactory Limited holds 27 US utility patents granted between 2015 and 2025, spanning 9 technology areas.

What is Tung Hing Plastic Manufactory Limited's Innovation Score?

Tung Hing Plastic Manufactory Limited has an Innovation Score of 28.2 out of 100 (27th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Tung Hing Plastic Manufactory Limited's patent grant rate increasing or decreasing?

Tung Hing Plastic Manufactory Limited's recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Tung Hing Plastic Manufactory Limited's patents?

Tung Hing Plastic Manufactory Limited's patents average 9.0 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 Tung Hing Plastic Manufactory Limited 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

Tung Hing Plastic Manufactory Limited

Q: What technology areas does Tung Hing Plastic Manufactory Limited focus on?

Tung Hing Plastic Manufactory Limited's top technology area is A45D (Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring) with 10 patents, ranking #60 of 429 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

USPTO PatentsView assignee record - 27 granted patents across 9 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: A45D (Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Tung ranks #11,492 of 49,997 tracked US assignees by granted-patent volume, with 27 patents across 9 technology areas.

#11,492
of 49,997 US assignees by volume: 27th percentile
by Innovation Score (28.2/100): 9.0
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R11492 · Foreign Corporation #11,492 · 27 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 27 grants
UPPER-Q #11,492/49,997
PHOTO-FINISH Thermo Electron LED
CPC-NARROW A45D · 9 areas
INNOV-THIN 28.2/100
CLAIMS-PAR 9.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Thermo Electron LED GmbH (±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 Tung’s 28.2 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 11.5 pts (41%) Velocity 0.7 pts (2%) Breadth 10.6 pts (38%) Claim depth 5.4 pts (19%)

Qualcomm Incorporated · highest

85
Brooks Sports · near

28
Celadon Systems · near

28
Cellresearch PTE · near

28
Tung Hing Plastic… · this assignee

28
Zero Friction · near

28
3D Lighting… · lowest

7

What this shows Tung's Innovation Score is 28.2/100 (27th 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 Tung?

Each dot is one of Tung’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). Tung’s own 9.0 claims/patent is at or below the 12.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Tung's grants concentrate

Tung Hing Plastic Manufactory Limited is a focused PatentsView assignee: 9 CPC subclasses with 37% of grants classified under A45D (Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring). Peak complete grant year is 2019 (8 grants) versus a trough of 1 in 2015. By volume, Tung sits between Thermo Electron LED GmbH and Unitract Syringe PTY Ltd.

Tung's three-year grant acceleration

Tung Hing Plastic Manufactory Limited shows 2 grants in 2022–2024 against only 18 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.

Thermo Electron L…

27
Tokai Optical

27
Top Knobs USA

27
Trelleborg Sealin…

27
Two Six Labs

27
UBE Machinery

27
Umicore Shokubai…

27
Unitract Syringe…

27
Tung Hing Plastic… ◀

27

What this shows Tung holds 27 patents at rank #11,490, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tung

By rank, the assignees closest to #11,490 in granted patent volume.

Leaders in A45D (Hairdressing OR Shaving Equipment)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Tung, neither rank-band nor same-CPC leaders (those blocks stay above). In A45D (Hairdressing OR Shaving Equipment), Tung ranks #60 of 429 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (28 here).

Brooks Sports, Inc. 28 Celadon Systems, Inc. 28 Cellresearch Corporation PTE. Ltd. 28 Zero Friction, LLC 28

Tung's Innovation Score vs. every tracked assignee

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

28 27th percentile higher than 27% 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

Tung Hing Plastic Manufactory Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	3.7%
2017	2	7.4%
2018	1	3.7%
2019	8	29.6%
2020	2	7.4%
2021	8	29.6%
2022	1	3.7%
2023	1	3.7%
2025partial year	3	11.1%

Which technologies does Tung Hing Plastic Manufactory Limited patent most?

A45D - Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring 10

A46B - Brushes 5

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 3

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 3

B29K - Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts 2

A46D - Manufacture OF Brushes 2

B21G - Making Needles, Pins OR Nails OF Metal 2

B21F - Working OR Processing OF Metal Wire 2

A47L - Domestic Washing OR Cleaning ; Suction Cleaners IN General 1

Top 9 of 9 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

Tung Hing Plastic Manufactory Limited's patent record in context - here's where to go next.

Tung Hing Plastic Manufactory Limited's lead technology class is A45D (Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring), 37% of its portfolio - see every assignee active in that class. Explore A45D
Ranked #11,492 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tung Hing Plastic Manufactory Limited against Thermo Electron LED GmbH, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 28.2/100 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.