Where does Hydac Filter Systems GMBH rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hydac Filter Systems GMBH ranks #29,022 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 Hydac Filter Systems GMBH hold?

Hydac Filter Systems GMBH holds 9 US utility patents granted between 2015 and 2023, spanning 10 technology areas.

What is Hydac Filter Systems GMBH's Innovation Score?

Hydac Filter Systems GMBH has an Innovation Score of 41.7 out of 100 (top 33% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hydac Filter Systems GMBH focus on?

Hydac Filter Systems GMBH's top technology area is B01D (Separation) with 7 patents. Grants appear in 10 CPC subclasses total.

Is Hydac Filter Systems GMBH's patent grant rate increasing or decreasing?

Hydac Filter Systems GMBH's recent grant velocity is +25% 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 Hydac Filter Systems GMBH's patents?

Hydac Filter Systems GMBH's patents average 15.3 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 Hydac Filter Systems GMBH 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

Hydac Filter Systems GMBH

USPTO PatentsView assignee record - 9 granted patents across 10 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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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hydac ranks #29,022 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 10 technology areas.

#29,022
of 49,997 US assignees by volume: Top 33%
by Innovation Score (41.7/100): 15.3
avg claims per patent: +25%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R29022 · Foreign Corporation #29,022 · 9 grants

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

GRANTS-MICRO 9 grants
MID-PACK #29,022/49,997
PHOTO-FINISH Hamlet Protein A/S
CPC-FOCUS B01D · 10 areas
INNOV-PAR 41.7/100
CLAIMS-RICH 15.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +25% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hamlet Protein A/S (±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.

Qualcomm Incorporated · highest

85
Hydac Filter Systems · this assignee

42
3D Lighting… · lowest

7

What this shows Hydac's Innovation Score is 41.7/100 (top 33% 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.

Where Hydac's grants concentrate

Hydac Filter Systems GMBH is a focused PatentsView assignee: 10 CPC subclasses with 77.8% of grants classified under B01D (Separation). Peak complete grant year is 2022 (2 grants) versus a trough of 1 in 2015. By volume, Hydac sits between Hunan Vathin Medical Instrument Co., Ltd. and Hangzhou Jindoutengyun Technologies Co., Ltd..

Hydac's three-year grant acceleration

Hydac Filter Systems GMBH shows 4 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.

Hunan Vathin Medi…

9
Hunter's Specialt…

9
Husky Liners

9
Hybrid Razor

9
Hyglos Invest

9
Hyundai Powertech

9
Hamlet Protein A/S

9
Hangzhou Jindoute…

9
Hydac Filter Syst… ◀

9

What this shows Hydac holds 9 patents at rank #28,961, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hydac

By rank, the assignees closest to #28,961 in granted patent volume.

Leaders in B01D (Separation)

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

Hydac's Innovation Score vs. every tracked assignee

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

42 Top 33% higher than 67% 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

Hydac Filter Systems GMBH patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	11.1%
2016	1	11.1%
2018	1	11.1%
2019	1	11.1%
2020	1	11.1%
2022	2	22.2%
2023	2	22.2%

Which technologies does Hydac Filter Systems GMBH patent most?

B01D - Separation 7

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 2

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 2

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 1

F03D - Wind Motors 1

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

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

C10G - Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes 1

Top 10 of 10 technology areas

Where it ranks

Overall rank by patents

#29,022

of 49,997 tracked assignees

Innovation Score

41.7 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Hydac Filter Systems GMBH's patent record in context - here's where to go next.

Hydac Filter Systems GMBH's lead technology class is B01D (Separation), 77.8% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #29,022 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hydac Filter Systems GMBH against Hunan Vathin Medical Instrument Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.7/100 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.