Where does S.A. Lhoist Recherche et Développement rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), S.A. Lhoist Recherche et Développement ranks #7,764 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 S.A. Lhoist Recherche et Développement hold?

S.A. Lhoist Recherche et Développement holds 42 US utility patents granted between 2016 and 2025, spanning 27 technology areas.

What is S.A. Lhoist Recherche et Développement's Innovation Score?

S.A. Lhoist Recherche et Développement has an Innovation Score of 42.1 out of 100 (top 31% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is S.A. Lhoist Recherche et Développement's patent grant rate increasing or decreasing?

S.A. Lhoist Recherche et Développement's recent grant velocity is +77% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for S.A. Lhoist Recherche et Développement's patents?

S.A. Lhoist Recherche et Développement'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 S.A. Lhoist Recherche et Développement 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

S.A. Lhoist Recherche et Développement

Q: What technology areas does S.A. Lhoist Recherche et Développement focus on?

S.A. Lhoist Recherche et Développement'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 23 patents, ranking #56 of 1,052 assignees active in that subclass. Grants appear in 27 CPC subclasses total.

USPTO PatentsView assignee record - 42 granted patents across 27 technology areas, recorded in grant years 2016–2025. 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: 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, S.a. ranks #7,764 of 49,997 tracked US assignees by granted-patent volume, with 42 patents across 27 technology areas.

#7,764
of 49,997 US assignees by volume: Top 31%
by Innovation Score (42.1/100): 15.2
avg claims per patent: +77%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R7764 · Foreign Corporation #7,764 · 42 grants

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

GRANTS-SMALL 42 grants
UPPER-Q #7,764/49,997
PHOTO-FINISH Powdertech
CPC-FOCUS C04B · 27 areas
INNOV-PAR 42.1/100
CLAIMS-RICH 15.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +77% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Powdertech 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 S.a.’s 42.1 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 13.0 pts (31%) Velocity 1.6 pts (4%) Breadth 18.4 pts (44%) Claim depth 9.1 pts (22%)

Qualcomm Incorporated · highest

85
Carling · near

42
Hitachi Solutions · near

42
Kura Oncology · near

42
Lhoist Recherche et… · this assignee

42
Protean Electric · near

42
3D Lighting… · lowest

7

What this shows S.a.'s Innovation Score is 42.1/100 (top 31% 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 S.a.?

Each dot is one of S.a.’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). S.a.’s own 15.2 claims/patent is ABOVE the 13.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where S.a.'s grants concentrate

S.A. Lhoist Recherche et Développement is a focused PatentsView assignee: 27 CPC subclasses with 54.8% 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 2020 (9 grants) versus a trough of 1 in 2023. By volume, S.a. sits between Powdertech Co., Ltd. and Schott Pharma Schweiz AG.

S.a.'s three-year grant acceleration

From 2019–2021 to 2022–2024, S.A. Lhoist Recherche et Développement moved from 21 to 5 grants (0.24x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Powdertech

42
Quality Electrody…

42
REC Solar PTE

42
Rhodes

42
Safilo—SocietÀ Az…

42
Samsung Techwin

42
Santec Holdings

42
Schott Pharma Sch…

42
Lhoist Recherche… ◀

42

What this shows S.A. holds 42 patents at rank #7,763, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near SA

By rank, the assignees closest to #7,763 in granted patent volume.

Leaders in C04B (Lime)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for SA, neither rank-band nor same-CPC leaders (those blocks stay above). In C04B (Lime), SA ranks #56 of 1,052 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (42 here).

Hitachi Solutions, Ltd. 42 Protean Electric Limited 42 Carling Technologies, Inc. 42 Kura Oncology, Inc. 42

S.a.'s Innovation Score vs. every tracked assignee

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

42 Top 31% higher than 69% 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 · 2016–2025

Grants by year

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

View data table

S.A. Lhoist Recherche et Développement patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	2	4.8%
2017	6	14.3%
2018	2	4.8%
2019	3	7.1%
2020	9	21.4%
2021	9	21.4%
2022	2	4.8%
2023	1	2.4%
2024	2	4.8%
2025partial year	6	14.3%

Which technologies does S.A. Lhoist Recherche et Développement 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 23

C01F - Compounds OF THE Metals Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium, OR OF THE Rare-earth Metals 16

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 15

B01D - Separation 9

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 9

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 6

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 6

C22B - Production AND Refining OF Metals ; Pretreatment OF RAW Materials 5

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 5

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 4

C21C - Processing OF Pig-iron, e.g. Refining, Manufacture OF Wrought-iron OR STEEL; Treatment IN Molten State OF Ferrous Alloys 4

Y10T - Technical Subjects Covered BY Former US Classification 4

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 3

C21B - Manufacture OF Iron OR Steel 3

C09C - Treatment OF Inorganic Materials, Other Than Fibrous Fillers, TO Enhance Their Pigmenting OR Filling Properties ; Preparation OF Carbon Black ; ; Preparation OF Inorganic Materials Which ARE NO Single Chemical Compounds AND Which ARE Mainly Used AS Pigments OR Fillers 2

Top 15 of 27 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

S.A. Lhoist Recherche et Développement's patent record in context - here's where to go next.

S.A. Lhoist Recherche et Développement'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), 54.8% of its portfolio - see every assignee active in that class. Explore C04B
Ranked #7,764 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare S.A. Lhoist Recherche et Développement against Powdertech Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 42.1/100 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.