WO2026132061 - PROCESS FOR INCREASING THE BULK DENSITY OF RECYCLED GYPSUM
National phase entry is expected:
Publication Number
WO/2026/132061
Publication Date
25.06.2026
International Application No.
PCT/EP2025/087745
International Filing Date
17.12.2025
Title **
[English]
PROCESS FOR INCREASING THE BULK DENSITY OF RECYCLED GYPSUM
[French]
PROCÉDÉ D'AUGMENTATION DE LA DENSITÉ APPARENTE DU GYPSE RECYCLÉ
Applicants **
KNAUF GIPS KG
Inventors
FÖRSTER, Henning
BÜTTNER, Matthias
WELSCHER, Julia
BAUER, Angelika
FÖRSTER, Stephan
DIETZ, Stephan
BAYER, Michael
Priority Data
PCT/EP2024/025350
20.12.2024
EP
PCT/EP2024/025351
20.12.2024
EP
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2115 | |
| EPO | Filing, Examination, Granting | 8735 | |
| Japan | Filing, Examination, Granting | 2257 | |
| South Korea | Filing, Examination, Granting | 2195 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
20,042
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Abstract[English]
to provide a compact gypsum product with a bulk density in the range of 850 to 1400 g/L. By such processing, it is possible to significantly increase the bulk density of recycled gypsum, which allows for improvements of processing speed and a reduction of energy demands for respective gypsum powders. The present application is further concerned with a respective use of the inventive process for increasing the bulk density of recycled gypsum and the use of the product recycled gypsum for the production of gypsum articles.[French]
La présente invention concerne un procédé de traitement de poudre de gypse recyclé, la poudre de gypse ayant une densité apparente de 800 g/litre ou moins étant soumise à un traitement de compression à une pression d'au moins 0,1 N/mm2 pour fournir un produit de gypse compact ayant une densité apparente dans la plage de 850 à 1 400 g/litre. Grâce à un tel traitement, il est possible d'augmenter significativement la densité apparente du gypse recyclé, ce qui permet des améliorations de la vitesse de traitement et une réduction des demandes en énergie pour des poudres de gypse respectives. La présente demande concerne en outre une utilisation respective du procédé de l'invention pour augmenter la densité apparente du gypse recyclé et l'utilisation du produit de gypse recyclé pour la production d'articles en gypse.