Gadolinium oxysulfide - patents, research & applications

333Patents

38Research papers

28Patents - last 3 years

0Papers - last 3 years

Who owns the IP

The organizations most actively patenting around this compound, ranked by referenced patent volume.

#	Assignee	Patents
1	Canon Inc	92
2	Siemens AG	34
3	Proterial Ltd	20
4	Agfa Gevaert NV	11
5	Koninklijke Philips NV	10

6	Toshiba Corp	8
7	Eastman Kodak Co	7
8	Konica Minolta Inc	6
9	Niterra Co Ltd	6
10	3M Co	4

Explore the full landscape

This preview shows the leading assignees. Cypris reveals the full ownership landscape - every filing entity, filing trends, and portfolio momentum.

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Where innovation is concentrated

Patent classifications ranked by volume reveal the technical domains with the most active filing.

#	Code	Area	Patents
1	`G01T`		144
2	`G21K`		70
3	`C09K`	Materials for misc. applications	63
4	`A61B`		46
5	`H10F`		43

6	`G01N`	Investigating / analysing materials	29
7	`H04N`		28
8	`H01J`		16
9	`H01L`	Semiconductor devices	16
10	`A61N`		14

AI mapped opportunity space

This preview shows where patent activity concentrates. Cypris maps the full classification landscape to surface technical whitespace and IP headroom.

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Representative patents

The filings that best characterise the patent activity around this compound, most-referenced first.

Title	Year	Assignee
Process for the preparation of gadolinium oxysulfide (Gd2O2S) scintillation ceramics	2019	Tsinghua Tongfang Co Ltd
Process for the preparation of gadolinium oxysulfide (Gd2O2S) - scintillation ceramics	2019	Tsinghua Tongfang Co Ltd
Process for the preparation of gadolinium oxysulfide (Gd2O2S) scintillation ceramics	2017	Tsinghua Tongfang Co Ltd

How research activity has moved

Papers published per year for this compound, over the last decade of indexed records.

Year	Papers
2016	1
2018	1
2019	1
2020	1
2021	2

Who's driving the science

The most-published authors working with this compound, alongside their primary affiliations.

#	Author	Affiliation	Papers
1	I. Kandarakis	Technological Educational Institute of Athens	6
2	D. Cavouras	Technological Educational Institute of Athens	5
3	George Panayiotakis	University of Patras	4
4	Marc Verelst	Université Fédérale de Toulouse Midi-Pyrénées	3
5	Jeffrey N. Anker	Clemson University	3

6	Robert Mauricot	Université Fédérale de Toulouse Midi-Pyrénées	3
7	P. Liaparinos	University of Patras	3
8	Séverine Lechevallier	Université Fédérale de Toulouse Midi-Pyrénées	3
9	John C. Pajak	United States Army Medical Research and Development Command	2
10	Marine Vincent	Université Fédérale de Toulouse Midi-Pyrénées	2

Research leaders

This preview lists the top authors. Cypris surfaces the full researcher landscape, their affiliations, and how scientific influence is shifting.

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The literature that defines it

The most-cited papers anchoring the scientific record for this compound.

Title	Year	Cited by	Topic
Tomographic molecular imaging of x-ray-excitable nanoparticles	2010	135	Advanced MRI Techniques and Applications
Flat detectors and their clinical applications	2005	134	Medical Imaging Techniques and Applications
Monitoring pH-Triggered Drug Release from Radioluminescent Nanocapsules with X-ray Excited Optical Luminescence	2013	127	Nanoparticle-Based Drug Delivery
Evaluating x-ray detectors for radiographic applications: A comparison of ZnSCdS:Ag with and screens	1997	90	Digital Radiography and Breast Imaging
Modeling granular phosphor screens by Monte Carlo methods	2006	83	Luminescence Properties of Advanced Materials

Frequently asked questions

Common questions about this compound's patent and research landscape, answered from the underlying data.

What is the molecular formula and weight of gadolinium oxysulfide?

Gadolinium oxysulfide has the molecular formula Gd4O3S3 with a molecular weight of 773.177 g/mol. It is also known by the systematic name tetrakis(gadolinium(3+));tris(oxygen(2-));trisulfide and has several synonyms including Gd2O2S, gadolinium sulfoxylate, and digadolinium dioxide sulphide.

Which companies hold the most patents for gadolinium oxysulfide?

Canon Inc leads with 92 patents, followed by Siemens AG with 34 patents and Proterial Ltd with 20 patents. Other significant patent holders include Agfa Gevaert NV (11 patents), Koninklijke Philips NV (10 patents), and Toshiba Corp (8 patents).

What is the patent activity trend for gadolinium oxysulfide over the past decade?

Patent activity peaked in 2019 with 43 patents, following a sharp increase from 10 patents in 2016 to 31 in 2017. Activity has remained moderate since then, with 26 patents in 2018, declining to 13 patents in 2024 and 6 in 2025. Over the last three years (2023–2025), 43 patents were filed.

What are the primary technical classifications for gadolinium oxysulfide patents?

The dominant CPC subclasses are G01T (instrumentation for measuring ionizing radiation, 144 patents), G21K (nuclear reactor engineering and control, 70 patents), and C09K (materials not otherwise classified including luminescent materials, 63 patents). Medical imaging applications (A61B) account for 46 patents, and semiconductor-related classifications (H10F) cover 43 patents.

Which researchers have published the most on gadolinium oxysulfide?

I. Kandarakis from the Technological Educational Institute of Athens has authored the most papers with 6 publications, followed by D. Cavouras, also from the Technological Educational Institute of Athens, with 5 papers. George Panayiotakis from the University of Patras has published 4 papers. Marc Verelst, Jeffrey N. Anker, Robert Mauricot, P. Liaparinos, and Séverine Lechevallier each have 3 publications.