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Phosphinate As Flame-Proofing Additive For Pur/Pir Hard Foam Material - EP3833703

The patent EP3833703 was granted to Covestro on Apr 30, 2025. The application was originally filed on Aug 2, 2019 under application number EP19746492A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP3833703

COVESTRO
Application Number
EP19746492A
Filing Date
Aug 2, 2019
Status
Patent Maintained As Amended
Mar 28, 2025
Grant Date
Apr 30, 2025
External Links
Slate, Register, Google Patents

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BASFJun 1, 2023BASF ASSOCIATIONADMISSIBLE

Patent Citations (24) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication NumberPublication Link
DESCRIPTIONCN105131578
DESCRIPTIONCN105330818
DESCRIPTIONCN105505171
DESCRIPTIONDE4418307
DESCRIPTIONEP0069975
DESCRIPTIONEP1142940
DESCRIPTIONEP1359177
DESCRIPTIONEP1923417
DESCRIPTIONEP2910585
DESCRIPTIONUS2014066532
DESCRIPTIONUS2764565
DESCRIPTIONUS5268393
DESCRIPTIONUS5470891
DESCRIPTIONWO2006108833
DESCRIPTIONWO2010043624
INTERNATIONAL-SEARCH-REPORTCN105330818B
INTERNATIONAL-SEARCH-REPORTUS2015105484
INTERNATIONAL-SEARCH-REPORTWO2017089293
OPPOSITIONCN103709432
OPPOSITIONCN103804626
OPPOSITIONCN104194319
OPPOSITIONCN105176054
OPPOSITIONCN105860504
OPPOSITIONWO2015010775

Non-Patent Literature (NPL) Citations (3) New

NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.

Citation PhaseReference TextLink
OPPOSITION- Hermann Römpp, "Passage", Hermann Römpp, W. Keller Co., Römpp Chemielexikon, 5. Auflage, DE, Franck ́sche Verlagshandlung, Stuttgart, (19620101), pages 2271 - 2274, XP009550802-
OPPOSITION- Yang Jiajie, Chen Xiaohong, Zhou Honglei, Guo Weichun, Zhang Jian, Miao Zhen, He Daihua, "Synergistic effect of expandable graphite and aluminum hypophosphite in flame‐retardant ethylene vinyl acetate composites", Polymers for advanced technologies, Wiley & Sons , Bognor Regis, GB, GB , (20220201), vol. 33, no. 2, doi:10.1002/pat.5546, ISSN 1042-7147, pages 638 - 646, XP093113341
OPPOSITION- Elsevier, "Influence of phosphorous valency on thermal behaviour of flame retarded polyurethane foams", doi:10.1016/j.polymdegradstab.2011.05.012, (20110519), (20110519), XP028231160

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