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Oil Resistant Article - EP4150152
The patent EP4150152 was granted to SWM Luxembourg on Mar 26, 2025. The application was filed on May 11, 2021 under application number EP21726987A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
EP4150152
- Application Number
- EP21726987A
- Filing Date
- May 11, 2021
- Status
- Granted And Under Opposition
- Feb 21, 2025
- Publication Date
- Mar 26, 2025
- External Links
- Slate, Register, Google Patents
Patent Summary
Paper product with enhanced oil resistance that achieves superior performance without the use of fluorocarbon chemicals or high-temperature processing. The product comprises a pulp-based paper with hardwood fibers, containing a cellulose derivative, polyvinyl alcohol polymer, or vegetable protein-based polymer as the oil-resistant coating. The coating achieves oil resistance through a combination of cellulose-based properties and a sizing agent, while maintaining a Gurley permeability of less than 50,000 s/100 mL. The paper has a basis weight of 18-80 gsm and exhibits a wetlaid coating on both sides.
Patent Family
Patent Oppositions (2)
Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
Patent Citations (5) New
Patent citations refer to prior patents cited during different phases such as opposition or international search.
Dossier Documents
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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