Where does Refratechnik Holding GmbH rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Refratechnik Holding GmbH ranks #21,677 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 Refratechnik Holding GmbH hold?

Refratechnik Holding GmbH holds 13 US utility patents granted between 2016 and 2023, spanning 16 technology areas.

What is Refratechnik Holding GmbH's Innovation Score?

Refratechnik Holding 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%).

Is Refratechnik Holding GmbH's patent grant rate increasing or decreasing?

Refratechnik Holding GmbH's recent grant velocity is -37% 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 Refratechnik Holding GmbH's patents?

Refratechnik Holding GmbH's patents average 33.3 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 Refratechnik Holding 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

Refratechnik Holding GmbH

Q: What technology areas does Refratechnik Holding GmbH focus on?

Refratechnik Holding GmbH's top technology area is C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone) with 12 patents, ranking #117 of 1,052 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

USPTO PatentsView assignee record - 13 granted patents across 16 technology areas, recorded in grant years 2016–2023. 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: C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Refratechnik ranks #21,677 of 49,997 tracked US assignees by granted-patent volume, with 13 patents across 16 technology areas.

#21,677
of 49,997 US assignees by volume: Top 28%
by Innovation Score (43.3/100): 33.3
avg claims per patent: -37%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R21677 · Foreign Corporation #21,677 · 13 grants

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

GRANTS-MICRO 13 grants
MID-PACK #21,677/49,997
PHOTO-FINISH Real Imaging…
CPC-FOCUS C04B · 16 areas
INNOV-PAR 43.3/100
CLAIMS-DENSE 33.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -37% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Real Imaging Technology Co., 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 Refratechnik’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 9.1 pts (21%) Velocity 5.0 pts (12%) Breadth 14.1 pts (33%) Claim depth 15.0 pts (35%)

Qualcomm Incorporated · highest

85
Refratechnik Holding · this assignee

43
3D Lighting… · lowest

7

What this shows Refratechnik'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 Refratechnik?

Each dot is one of Refratechnik’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). Refratechnik’s own 33.3 claims/patent is ABOVE the 18.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Refratechnik's grants concentrate

Refratechnik Holding GmbH is a focused PatentsView assignee: 16 CPC subclasses with 92.3% of grants classified under C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone). Peak complete grant year is 2018 (3 grants) versus a trough of 1 in 2017. By volume, Refratechnik sits between Real Imaging Technology Co., Ltd and Relypsa, Inc..

Refratechnik's three-year grant acceleration

Refratechnik Holding GmbH shows 3 grants in 2022–2024 against only 4 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.

Real Imaging Tech…

13
Red Viking Group

13
Redshift Bioanaly…

13
Redwood Robotics

13
Regenlab USA

13
Relamp

13
Relay Therapeutics

13
Relypsa

13
Refratechnik Hold… ◀

13

What this shows Refratechnik holds 13 patents at rank #21,691, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Refratechnik

By rank, the assignees closest to #21,691 in granted patent volume.

Leaders in C04B (Lime)

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

Refratechnik'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 · 2016–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Refratechnik Holding GmbH patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	2	15.4%
2017	1	7.7%
2018	3	23.1%
2019	2	15.4%
2021	2	15.4%
2022	2	15.4%
2023	1	7.7%

Which technologies does Refratechnik Holding GmbH patent most?

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 12

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 4

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 4

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 3

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 2

F23M - Casings, Linings, Walls OR Doors Specially Adapted FOR Combustion Chambers, e.g. FIREBRIDGES; Devices FOR Deflecting AIR, Flames OR Combustion Products IN Combustion CHAMBERS; Safety Arrangements Specially Adapted FOR Combustion APPARATUS; Details OF Combustion Chambers, NOT Otherwise Provided FOR 2

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 1

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 1

B60R - Vehicles, Vehicle Fittings, OR Vehicle Parts, NOT Otherwise Provided FOR 1

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

D04H - Making Textile Fabrics, e.g. From Fibres OR Filamentary Material ; Fabrics Made BY Such Processes OR Apparatus, e.g. Felts, Non-woven FABRICS; COTTON-WOOL; Wadding ; ; Non-woven Fabrics From Staple Fibres, Filaments OR Yarns, Bonded With AT Least ONE Web-like Material During Their Consolidation 1

G06F - Electric Digital Data Processing 1

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

B82Y - Specific Uses OR Applications OF NANOSTRUCTURES; Measurement OR Analysis OF NANOSTRUCTURES; Manufacture OR Treatment OF Nanostructures 1

Top 15 of 16 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

Refratechnik Holding GmbH's patent record in context - here's where to go next.

Refratechnik Holding GmbH's lead technology class is C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone), 92.3% of its portfolio - see every assignee active in that class. Explore C04B
Ranked #21,677 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Refratechnik Holding GmbH against Real Imaging Technology Co., 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.