Where does Hydac Filtertechnik GMBH rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hydac Filtertechnik GMBH ranks #5,594 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 Filtertechnik GMBH hold?

Hydac Filtertechnik GMBH holds 61 US utility patents granted between 2015 and 2025, spanning 28 technology areas.

What is Hydac Filtertechnik GMBH's Innovation Score?

Hydac Filtertechnik GMBH has an Innovation Score of 43.3 out of 100 (top 28% 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 Filtertechnik GMBH focus on?

Hydac Filtertechnik GMBH's top technology area is B01D (Separation) with 54 patents, ranking #79 of 3,536 assignees active in that subclass. Grants appear in 28 CPC subclasses total.

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

Hydac Filtertechnik GMBH's recent grant velocity is -82% 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 Hydac Filtertechnik GMBH's patents?

Hydac Filtertechnik GMBH's patents average 15.2 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 Filtertechnik 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 Filtertechnik GMBH

USPTO PatentsView assignee record - 61 granted patents across 28 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hydac ranks #5,594 of 49,997 tracked US assignees by granted-patent volume, with 61 patents across 28 technology areas.

#5,594
of 49,997 US assignees by volume: Top 28%
by Innovation Score (43.3/100): 15.2
avg claims per patent: -82%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5594 · Foreign Corporation #5,594 · 61 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 61 grants
UPPER-Q #5,594/49,997
PHOTO-FINISH Flooring
CPC-FOCUS B01D · 28 areas
INNOV-PAR 43.3/100
CLAIMS-RICH 15.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -82% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Flooring Technologies 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 Hydac’s 43.3 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 14.3 pts (33%) Velocity 1.3 pts (3%) Breadth 18.7 pts (43%) Claim depth 9.1 pts (21%)

Qualcomm Incorporated · highest

85
De' Longhi Appliance… · near

43
Hydac Filtertechnik · this assignee

43
Sony Computer… · near

43
Draka Comteq B V · near

43
Hood Technology · near

43
3D Lighting… · lowest

7

What this shows Hydac's Innovation Score is 43.3/100 (top 28% 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 Hydac?

Each dot is one of Hydac’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). Hydac’s own 15.2 claims/patent is at or below the 17.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Hydac's grants concentrate

Hydac Filtertechnik GMBH is a focused PatentsView assignee: 28 CPC subclasses with 88.5% of grants classified under B01D (Separation). Peak complete grant year is 2018 (13 grants) versus a trough of 1 in 2024. By volume, Hydac sits between Flooring Technologies Ltd. and Infinidat Ltd..

Hydac's three-year grant acceleration

Hydac Filtertechnik GMBH shows 3 grants in 2022–2024 against only 16 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.

Flooring

61
Garden Genetics

61
Groz-beckert KG

61
Gen Digital

61
Hydro-quÉBEC

61
Haemonetics

61
Harbin Engineerin…

61
Infinidat

61
Hydac Filtertechn… ◀

61

What this shows Hydac holds 61 patents at rank #5,591, 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 #5,591 in granted patent volume.

Leaders in B01D (Separation)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hydac, neither rank-band nor same-CPC leaders (those blocks stay above). In B01D (Separation), Hydac ranks #79 of 3,536 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (43 here).

De' Longhi Appliances S.R.L. CON Unico Socio 43 Sony Computer Entertainment America, LLC 43 Draka Comteq B.V. 43 Hood Technology Corporation 43

Similar claim depth

Nearest assignees by average claims per patent (15.2 here).

Nuovo Pignone SRL 15.2 avg Positec Power Tools (Suzhou) Co., Ltd. 15.2 avg Carbon Technology Holdings, LLC 15.2 avg Beijing Naura Microelectronics Equipment Co., Ltd. 15.2 avg

Hydac's Innovation Score vs. every tracked assignee

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

43 Top 28% higher than 72% 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

Hydac Filtertechnik GMBH patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	8	13.1%
2016	7	11.5%
2017	11	18.0%
2018	13	21.3%
2019	10	16.4%
2020	4	6.6%
2021	2	3.3%
2022	2	3.3%
2024	1	1.6%
2025partial year	3	4.9%

Which technologies does Hydac Filtertechnik GMBH patent most?

B01D - Separation 54

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 10

Y10T - Technical Subjects Covered BY Former US Classification 6

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

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 2

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 2

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 2

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

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 2

D21H - Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherwise Provided FOR 1

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 1

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 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

Top 15 of 28 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

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

Hydac Filtertechnik GMBH's lead technology class is B01D (Separation), 88.5% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #5,594 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hydac Filtertechnik GMBH against Flooring Technologies Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 43.3/100 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.