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IP Verse

Method For Producing Purified Silicic Acid Alkali Aqueous Solution And Silica Sol - EP2754640

The patent EP2754640 was granted to Nissan Chemical on Jun 27, 2018. The application was filed on Sep 5, 2012 under application number EP12829887A. The patent is currently recorded with a legal status of "Revoked".

EP2754640

NISSAN CHEMICAL
Application Number
EP12829887A
Filing Date
Sep 5, 2012
Status
Revoked
Mar 29, 2024
Publication Date
Jun 27, 2018
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

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.

CompanyOpposition DateRepresentativeOpposition Status
NOURYON CHEMICALSMar 27, 2019INGRASSIAADMISSIBLE
NOURYON CHEMICALSMar 27, 2019LKGLOBAL UKADMISSIBLE

Patent Citations (13) New

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

Citation PhasePublication Number
DESCRIPTIONJP2001294420
INTERNATIONAL-SEARCH-REPORTJP2001294420
INTERNATIONAL-SEARCH-REPORTJP2002511379
INTERNATIONAL-SEARCH-REPORTJP2006036605
INTERNATIONAL-SEARCH-REPORTJPH09168710
OPPOSITIONCN1084491
OPPOSITIONCN1386702
OPPOSITIONJPH11244628
OPPOSITIONUS3673104
OPPOSITIONUS7645312
SEARCHEP2757070
SEARCHJP2001294420
SEARCHWO9952821

Dossier Documents

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  • Date

    Description

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