WO2026115463 - ELEMENTAL SULFUR REDUCTION IN GYPSUM
National phase entry is expected:
Publication Number
WO/2026/115463
Publication Date
04.06.2026
International Application No.
PCT/IB2025/062109
International Filing Date
26.11.2025
Title **
[English]
ELEMENTAL SULFUR REDUCTION IN GYPSUM
[French]
RÉDUCTION DU SOUFRE ÉLÉMENTAIRE DANS LE GYPSE
Applicants **
PANEL REY, S.A.
Inventors
AYAMBEM, Amba
Priority Data
63/725,752
27.11.2024
US
63/733,590
13.12.2024
US
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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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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| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| 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 | 2342 | |
| EPO | Filing, Examination, Granting | 12733 | |
| Japan | Filing, Examination, Granting | 2440 | |
| South Korea | Filing, Examination, Granting | 2647 | |
| USA | Filing, Examination, Granting | 7340 |
Total:
27,502
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Abstract[English]
This invention generally relates to a method for the reduction of elemental sulfur content in gypsum, and by extension, products that are derived from it such as gypsum wallboard. More specifically, and in one embodiment, this invention relates to using the effectiveness of potassium permanganate or sodium permanganate in reducing elemental sulfur content in a gypsum wallboard or its precursor materials.[French]
La présente invention concerne de manière générale un procédé de réduction de la teneur en soufre élémentaire dans du gypse, et par extension, des produits qui en sont dérivés tels qu'un panneau de gypse. Plus spécifiquement, et dans un mode de réalisation, la présente invention concerne l'utilisation des propriétés du permanganate de potassium ou du permanganate de sodium dans la réduction de la teneur en soufre élémentaire dans un panneau de gypse ou ses matériaux précurseurs.