The weekly litigation news digest is live. Subscribe now

IP Verse

Use Of A Coating Composition And Corresponding Method For Producing A Centrifugal Casting Mould With A Coating - EP3837066

The patent EP3837066 was granted to Httenes Albertus Chemische Werke Gesellschaft MIT Beschrnkter Haftung on Jun 29, 2022. The application was filed on Aug 13, 2019 under application number EP19753348A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3837066

HTTENES ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRNKTER HAFTUNG
Application Number
EP19753348A
Filing Date
Aug 13, 2019
Status
Granted And Under Opposition
May 27, 2022
Publication Date
Jun 29, 2022
External Links
Slate, Register, Google Patents

Patent Summary

A sizing composition for centrifugal casting with a solids content of more than 69% by weight and a loss on ignition of less than 0.6% by weight, enabling rapid drying and controlled microstructure formation while minimizing gas defects and mold wear. The composition comprises a particulate, amorphous oxide, preferably microsilica, as the primary component, and secondary components such as zirconium oxide, carbon, and Lewis acids. The composition is applied to the inner wall of a centrifugal casting mold using a spray application method, enabling the production of castings with structured surfaces.

Patent Family

Patent Family

Patent Oppositions

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
ASK CHEMICALSMar 29, 2023MULLER SCHUPFNER & PARTNER PATENT UND RECHTSANWALTSPARTNERSCHAFT MBB HAMBURGADMISSIBLE

Patent Citations (36) New

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

Citation PhasePublication Number
DESCRIPTIONCN101554643
DESCRIPTIONCN103817285
DESCRIPTIONDE102006046619
DESCRIPTIONDE102017106458
DESCRIPTIONDE10339676
DESCRIPTIONDE1508913
DESCRIPTIONDE60004770T
DESCRIPTIONEP0246181
DESCRIPTIONEP1504833
DESCRIPTIONEP1711291
DESCRIPTIONEP1902208
DESCRIPTIONEP2159208
DESCRIPTIONEP2281789
DESCRIPTIONEP2422902
DESCRIPTIONEP2618338
DESCRIPTIONEP2722863
DESCRIPTIONUS2002157571
DESCRIPTIONUS2014196863
DESCRIPTIONUS2015122118
DESCRIPTIONUS6699314
DESCRIPTIONWO2008118023
DESCRIPTIONWO2017009216
DESCRIPTIONWO2017184239
INTERNATIONAL-SEARCH-REPORTDE102017107655
INTERNATIONAL-SEARCH-REPORTDE102017107658
INTERNATIONAL-SEARCH-REPORTUS2008115691
INTERNATIONAL-SEARCH-REPORTWO2008118023
OPPOSITIONDE102006002246
OPPOSITIONDE102013113439
OPPOSITIONEP0246181
OPPOSITIONGB722459
OPPOSITIONGB865301
OPPOSITIONUS2623809
OPPOSITIONUS4297309
OPPOSITIONUS6540013
OPPOSITIONWO2016091249

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.

  • Date

    Description

  • Get instant alerts for new documents