Where does Tianjin Polytechnic University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tianjin Polytechnic University ranks #15,700 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 Tianjin Polytechnic University hold?

Tianjin Polytechnic University holds 19 US utility patents granted between 2015 and 2023, spanning 26 technology areas.

What is Tianjin Polytechnic University's Innovation Score?

Tianjin Polytechnic University has an Innovation Score of 40.8 out of 100 (top 35% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Tianjin Polytechnic University focus on?

Tianjin Polytechnic University's top technology area is B01D (Separation) with 16 patents, ranking #303 of 3,536 assignees active in that subclass. Grants appear in 26 CPC subclasses total.

Is Tianjin Polytechnic University's patent grant rate increasing or decreasing?

Tianjin Polytechnic University's recent grant velocity is -10% 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 Tianjin Polytechnic University's patents?

Tianjin Polytechnic University's patents average 9.6 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 Tianjin Polytechnic University 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

Tianjin Polytechnic University

USPTO PatentsView assignee record - 19 granted patents across 26 technology areas, recorded in grant years 2015–2023. 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Tianjin ranks #15,700 of 49,997 tracked US assignees by granted-patent volume, with 19 patents across 26 technology areas.

#15,700
of 49,997 US assignees by volume: Top 35%
by Innovation Score (40.8/100): 9.6
avg claims per patent: -10%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R15700 · Foreign Corporation #15,700 · 19 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 19 grants
MID-PACK #15,700/49,997
PHOTO-FINISH THE Middleby
CPC-FOCUS B01D · 26 areas
INNOV-PAR 40.8/100
CLAIMS-PAR 9.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT -10% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: THE Middleby Corporation (±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 Tianjin’s 40.8 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 10.3 pts (25%) Velocity 6.7 pts (16%) Breadth 18.0 pts (44%) Claim depth 5.7 pts (14%)

Qualcomm Incorporated · highest

85
Tianjin Polytechnic… · this assignee

41
3D Lighting… · lowest

7

What this shows Tianjin's Innovation Score is 40.8/100 (top 35% 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 Tianjin?

Each dot is one of Tianjin’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). Tianjin’s own 9.6 claims/patent is at or below the 12.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Tianjin's grants concentrate

Tianjin Polytechnic University is a focused PatentsView assignee: 26 CPC subclasses with 84.2% of grants classified under B01D (Separation). Peak complete grant year is 2023 (4 grants) versus a trough of 1 in 2018. By volume, Tianjin sits between THE Middleby Corporation and Tosho, Inc..

Tianjin's three-year grant acceleration

Tianjin Polytechnic University shows 5 grants in 2022–2024 against only 5 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.

THE Middleby

19
THE Royal College…

19
THE Yoshida Denta…

19
Throughtek Techno…

19
Titanium Metals

19
Tiveni Mergeco

19
Tombow Pencil

19
Tosho

19
Tianjin Polytechn… ◀

19

What this shows Tianjin holds 19 patents at rank #15,680, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tianjin

By rank, the assignees closest to #15,680 in granted patent volume.

Leaders in B01D (Separation)

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

Tianjin's Innovation Score vs. every tracked assignee

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

41 Top 35% higher than 65% 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 · 2015–2023

Grants by year

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

View data table

Tianjin Polytechnic University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	15.8%
2016	3	15.8%
2017	2	10.5%
2018	1	5.3%
2019	1	5.3%
2020	2	10.5%
2021	2	10.5%
2022	1	5.3%
2023	4	21.1%

Which technologies does Tianjin Polytechnic University patent most?

B01D - Separation 16

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 7

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 5

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 2

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 2

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 2

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 2

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

B29D - Producing Particular Articles From Plastics OR From Substances IN A Plastic State 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 1

C08L - Compositions OF Macromolecular Compounds 1

C07D - Heterocyclic Compounds 1

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 1

Y02A - Technologies FOR Adaptation TO Climate Change 1

Top 15 of 26 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

Tianjin Polytechnic University's patent record in context - here's where to go next.

Tianjin Polytechnic University's lead technology class is B01D (Separation), 84.2% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #15,700 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tianjin Polytechnic University against THE Middleby Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.8/100 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.